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1)Write a program to read annual salary of an employee and decide tax

withheld as follows:
Salary Tax
Upto 100000 0%
Upto 150000 15%
Above 150000 25%

#include <stdio.h>
#include <stdlib.h>
int main()
{
int sal,tax;/*sal=salary*/
float total;
printf("Enter salary per year Rs:",sal);
scanf("%d",&sal);
if (sal<=100000)
printf("Tax is 0 percent,so your Salary after paying tax is Rs
%d \n\n ",sal);
else if (sal>100000 && sal<=150000)
{
total=sal-(0.15*sal);
printf("Tax is 15 percent,so your Salary after paying tax is
Rs %f \n",total);
tax=sal-total;
printf("Tax amount is Rs %d\n",tax);
}
else if(sal>150000)
{
total=sal-(0.25*sal);
printf("Tax is 25 percent,so your Salary after paying tax is Rs
%f \n ",total);
tax=sal-total;
printf("Tax amount is Rs %d\n",tax);
}
system("pause");
return(0);
}

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2)Write a program to check whether a given number is prime or not.

#include <stdio.h>
#include <stdlib.h>
int main()
{
int n,i=2;
printf("Enter number you want to check: ");
scanf("%d",&n);
for (i=2;i<=n-1;i++)
{
if (n%i==0)
{
printf("%d is not a prime number\n",n);
break;
}
}
{
if (i==n)
printf("%d is prime number \n",n);
}
system("pause");
return(0);
}

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3)WAP that add digits of 4 digit number.

#include<stdio.h>
#include<stdlib.h>
int main()
{
int a,sum=0;
printf("Enter four digit number= ");
scanf("%d",&a);
sum=sum+(a%10);
a=a/10;
sum=sum+(a%10);
a=a/10;
sum=sum+(a%10);
a=a/10;
sum=sum+(a%10);
a=a/10;
sum=sum+(a%10);
printf("sum of digits=%d \n",sum);
system("pause");
return(1);
}

4)WAP to calculate diameter,circumference and area of circle.

/*a program that evaluates area and circumference of of circle*/
#include <stdio.h>
#define pie 3.14
int main()
{
float Area,Circumference,r,diameter;
printf("Enter the value of radius of Circle in cm=",r);
scanf("%f",&r);
Circumference=2*pie*r;
Area=pie*r*r;
diameter=2*r;
printf("\n");
printf("Diameter of circle is %f \n\n",diameter);
printf("Circumference of circle is %f \n\n",Circumference);
printf("Area of circle is %f \n\n",Area);
system("pause");
return(0);
}

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5)WAP that reverse the number.(4 digit number)

#include <stdio.h>
int main()
{
int num;
printf("Enter the number: ");
scanf("%d",&num);
printf("The reverse of %d is : ",num);
printf("%d",num%10);
num=num/10;
printf("%d",num%10);
num=num/10;
printf("%d",num%10);
num=num/10;
printf("%d",num%10);
scanf("%d",&num);
return(1);
}

6)Write a program that displays all Ascii codes.

#include <stdio.h>
int main()
{
int i;
printf("The all ASCII values are : ");
for(i=0;i<=256;i++)
{
printf("\n%d \t%c",i,i);
}
system("pause");
return(0);

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7)Write a program for delta star transformation of resistance.

#include <stdio.h>
int main()
{
double R1,R2,R3,R12,R23,R13;
printf(" R12\n");
printf(" *\n");
printf(" * | *\n");
printf(" * |R1*\n");
printf(" * | *\n");
printf(" *R2/ \\R3*\n");
printf(" * / \\ *\n");
printf("R23****************R13\n\n");
printf("Enter the value of R12(in ohm)=");

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scanf("%Lf",&R12);
printf("Enter the value of R23(in ohm)=");
scanf("%Lf",&R23);
printf("Enter the value of R13(in ohm)=");
scanf("%Lf",&R13);
R1=(R12*R13)/(R12+R23+R13);
printf("Resistance in R1(in ohm) is %Lf\n",R1);
R2=(R12*R23)/(R12+R23+R13);
printf("Resistance in R2(in ohm) is %Lf\n",R2);
R3=(R13*R23)/(R12+R23+R13);
printf("Resistance in R3(in ohm) is %Lf\n",R3);
scanf("%lf",&R3);
return(1);
}

8)Write a program will swap the value of these two numbers.

#include <stdio.h>
int main()
{
float a,b,temp;
printf("Enter value of a: ");
scanf("%f",&a);
printf("Enter value of b: ");
scanf("%f",&b);
temp=a; /*Value of a is stored in variable temp */
a=b; /*Value of b is stored in variable a*/
b=temp;/*Value of temp(which contains initial value of a) is
stored in variable b*/
printf("After swapping,value of a = %f\n",a);
printf("After swapping,value of b = %f\n",b);
system("pause");
return (0);
}

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9)/* This program computes the size of variable using size of operator.*/
#include <stdio.h>
int main()
{
int a;
float b;
double c;
char d;
printf("Size of int: %d bytes\n",sizeof(a));
printf("Size of float: %d bytes\n",sizeof(b));
printf("Size of double: %d bytes\n",sizeof(c));
printf("Size of char: %d byte\n",sizeof(d));
system("pause");
return (0);
}

10)/*C Program to find roots of a quadratic equation when coefficients

are entered by user*/
/*Library function sqrt() computes the square root*/
#include <stdio.h>
#include <math.h> /*This is needed to use sqrt() function*/
int main()
{
float a,b,c,determinant,r1,r2,real,imag;
printf("Enter coefficients a,b and c: ");
scanf("%f%f%f",&a,&b,&c);
if (a==0.0)
{
printf("It is not a quadratic equation");
exit(1);
}
determinant=b*b-4*a*c;
if(determinant<0.0)
printf("\nRoots are imaginary\n");

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else if(determinant>0.0)
{
printf("Roots are real and unequal");
r1=(-b+sqrt(determinant))/(2*a);
r2=(-b-sqrt(determinant))/(2*a);
printf("\nfirst root:%f",r1);
printf("\nsecond root:%f",r2);
}
else if(determinant==0)
{
r1 =r2 =-b/(2*a);
printf("Roots are real and equal\n");
printf("Roots are :%f and %f\n",r1,r2);
}
else
{
real=-b/(2*a);
imag =sqrt(-determinant)/(2*a);
printf("Roots are: %f+%fi and %f-%fi \n",real,imag,real,imag);
}
system("pause");
return (0);
}

11)/* C program to find largest number using if statement only */

#include <stdio.h>
int main()
{
float a, b, c;
printf("Enter three numbers a b c: ");
scanf("%f %f %f",&a,&b,&c);

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if(a>=b && a>=c)

printf("Largest number is a =%f\n",a);
if(b>=a && b>=c)
printf("Largest number is b=%f\n",b);
if(c>=a && c>=b)
printf("Largest number is c=%f\n",c);
system("pause");
return 0;
}

12)WAP to calculate Sum of Natural Numbers.

/* This program is solve using for loop*/
#include <stdio.h>
int main()
{
int n,count,sum=0;
printf("Enter an integer:");
scanf("%d",&n);
for(count=1;count<=n;++count)/* for loop terminates if count>n
*/
{
sum+=count;/* sum=sum+count */
}
printf("Sum of natural number=%d\n",sum);
system("pause");
return 0;
}

13)Source Code to Find Factorial of a Number.

/*C program to display factorial of an integer if user enters
non-negative integer*/
#include <stdio.h>
int main()
{
int n,count;
unsigned long long int factorial=1;
printf("Enter an integer: ");
scanf("%d",&n);

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if (n<0)
printf("Error!!! Factorial of negative number doesn't
exist\n");
else
{
for(count=1;count<=n;++count) /*for loop terminates if
count>n*/
{
factorial*=count; /*factorial=factorial*count*/
}
printf("Factorial = %lu",factorial);
}
system("pause");
return 0;
}

14)Source Code to Generate Multiplication Table

#include <stdio.h>
int main()
{
int n,range,i;
printf("Enter an integer to find multiplication table: ");
scanf("%d",&n);
printf("Enter range of multiplication table: ");
scanf("%d",&range);
for(i=1;i<=range;++i)
{
printf("%d * %d = %d\n",n,i,n*i);
}
system("pause");
return 0;
}

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15)Source Code to Compute LCM

#include<stdio.h>
int main()
{
int n1,n2,temp1,temp2;
printf("Enter two positive integers:");
scanf("%d %d",&n1,&n2);
temp1=n1;
temp2=n2;
while(temp1!=temp2)
{
if(temp1>temp2)
temp1-=temp2;
else temp2-=temp1;
}
printf("LCM of two numbers %d and %d is
%d\n\n",n1,n2,(n1*n2)/temp1);
system("pause");
return 0;
}

16)C Program to Check Palindrome Number

/*C program to check whether a number is palindrome or not */
#include <stdio.h>
int main()
{

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int n,reverse=0,rem,temp;
printf("Enter an integer: ");
scanf("%d",&n);
temp=n;
while(temp!=0)
{
rem=temp%10;
reverse=reverse*10+rem;
temp/=10; } /* Checking if number entered by user and it's reverse
number is equal. */
if(reverse==n)
printf("%d is a palindrome\n",n);
else
printf("%d is not a palindrome\n",n);
system("pause");
return 0;
}

17)Source Code to Make Simple Calculator in C programming

tint main()
{
char o;
float num1,num2;
printf("Enter operator either + or - or * or divide : ");
scanf("%c",&o);
printf("Enter two operands: ");
scanf("%f%f",&num1,&num2);
switch(o)
{
case '+':
printf("%f + %f = %f\n",num1,num2,num1+num2);
break;
case '-':
printf("%f - %f = %f\n",num1,num2,num1-num2);
break;
case '*':printf("%f * %f = %f\n",num1, num2, num1*num2);
break;
case '/':

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printf("%f / %f = %f\n",num1,num2,num1/num2);
break;
default: /*If operator is other than +, -, * or /, error message
is shown */
printf("Error! operator is not correct");
break;
}
system("pause");
return 0;
}

18)Source Code to Display Largest Element of an array

#include <stdio.h>
int main()
{
int i,n;
float arr[100];
printf("Enter total number of elements(1 to 100): ");
scanf("%d",&n);
printf("\n");
for(i=0;i<n;++i)/* Stores number entered by user*/
{
printf("Enter Number %d:",i+1);
scanf("%f",&arr[i]);
}
for(i=1;i<n;++i) /* Loop to store largest number to arr[0] */
{
if(arr[0]<arr[i]) /* Change < to > if you want to find smallest
element*/
arr[0]=arr[i];
}
printf("Largest element = %f\n",arr[0]);
system("pause");
return 0;
}

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19)A program to find whether given year year is leap or not.

#include <stdio.h>
#include <stdlib.h>
int main()
{
int n;
printf("Enter year:");
scanf("%d",&n);
if((n%4==0 && n%100!=0)||n%400==0)
printf("\nThis is leap year");
else
printf("\nThis is not leap year ");
scanf("%d",&n);
return(1);
}

20)Source code to multiply to matrix in C programming

#include <stdio.h>
int main()
{
int a[10][10],b[10][10],mult[10][10]r1,c1,r2,c2,i,j,k;
printf("Enter rows and column for first matrix:");
scanf("%d%d",&r1, &c1);
printf("Enter rows and column for second matrix:");
scanf("%d%d",&r2, &c2);
/* If colum of first matrix in not equal to row of second
matrix,exit */

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while (c1!=r2)
{
printf("Error! column of first matrix not equal to row
of second So there will be no multiplication\n\n");
exit(1);
}

/* Storing elements of first matrix. */

printf("\nEnter elements of matrix 1:\n");
for(i=0; i<r1; ++i)
for(j=0; j<c1; ++j)
{
printf("Enter elements a%d%d: ",i+1,j+1);
scanf("%d",&a[i][j]);
}

/* Storing elements of second matrix. */

printf("\nEnter elements of matrix 2:\n");
for(i=0; i<r2; ++i)
for(j=0; j<c2; ++j)
{
printf("Enter elements b%d%d: ",i+1,j+1);
scanf("%d",&b[i][j]);
}

/* Initializing elements of matrix mult to 0.*/

for(i=0; i<r1; ++i)
for(j=0; j<c2; ++j)
{
mult[i][j]=0;
}

/* Multiplying matrix a and b and storing in array mult. */

for(i=0; i<r1; ++i)
for(j=0; j<c2; ++j)
for(k=0; k<c1; ++k)
{
mult[i][j]+=a[i][k]*b[k][j];
}

/* Displaying the multiplication of two matrix. */

printf("\nOutput Matrix:\n");
for(i=0; i<r1; ++i)
for(j=0; j<c2; ++j)
{
printf("%d ",mult[i][j]);
if(j==c2-1)

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printf("\n\n");
}
system("pause");
return 0;
}

21)WAP to enter two numbers.Make the comparisons using conditional

operator.If the first number is greater than second perform addition
otherwise subtraction.
#include <stdio.h>
int main()
{
int A,B,ADD,SUB;
printf("Enter the first operand:");
scanf("%d",&A);
printf("Enter the Second operand:");
scanf("%d",&B);
if(A>B)
{
ADD=A+B;
printf("Since A is greater than B,so on addition A+B
=%d\n",ADD);
}
else
{
SUB=A-B;
printf("Since B is greater than A,so on Subtraction A-B
=%d\n",SUB);

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}
system("pause");
return 0;
}

22)C Program to Find Transpose of a Matrix

#include <stdio.h>
int main()
{
int a[10][10],trans[10][10],r,c,i,j;
printf("Enter rows and column of matrix: ");
scanf("%d %d", &r, &c); /* Storing element of matrix entered by
user in array a[][]. */
printf("\nEnter elements of matrix:\n");
for(i=0; i<r; ++i) for(j=0; j<c; ++j)
{
printf("Enter elements a%d%d: ",i+1,j+1);
scanf("%d",&a[i][j]);
}
/* Displaying the matrix a[][] */
printf("\nEntered Matrix: \n");
for(i=0; i<r; ++i)
for(j=0; j<c; ++j)
{
printf("%d ",a[i][j]);
if(j==c-1)
printf("\n\n");
} /* Finding transpose of matrix a[][] and storing it in array
trans[][]. */
for(i=0; i<r; ++i)
for(j=0; j<c; ++j)
{
trans[j][i]=a[i][j];
} /* Displaying the transpose,i.e, Displaying array trans[][].
*/

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printf("\nTranspose of Matrix:\n");
for(i=0; i<c; ++i)
for(j=0; j<r; ++j)
{
printf("%d ",trans[i][j]);
if(j==r-1)
printf("\n\n");
}
system("pause");
return 0;
}

23)Source Code to Add Two Matrix in C programming

#include <stdio.h>
int main(){
int r,c,a[100][100],b[100][100],sum[100][100],i,j;
printf("Enter number of rows (between 1 and 100): ");
scanf("%d",&r);
printf("Enter number of columns (between 1 and 100): ");
scanf("%d",&c);
printf("\nEnter elements of 1st matrix:\n");
/* Storing elements of first matrix entered by user. */

for(i=0;i<r;++i)
for(j=0;j<c;++j)
{
printf("Enter element a%d%d: ",i+1,j+1);

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scanf("%d",&a[i][j]);
}
printf("Enter elements of 2nd matrix:\n");
for(i=0;i<r;++i)
for(j=0;j<c;++j)
{
printf("Enter element a%d%d: ",i+1,j+1);
scanf("%d",&b[i][j]);
}
/*Adding Two matrices */
for(i=0;i<r;++i)
for(j=0;j<c;++j)
sum[i][j]=a[i][j]+b[i][j];
/* Displaying the resultant sum matrix. */
printf("\nSum of two matrix is: \n\n");
for(i=0;i<r;++i)
for(j=0;j<c;++j)
{
printf("%d",sum[i][j]);
if(j==c-1)
printf("\n\n");
}
system("pause");
return 0;
}

24) Source Code to Check Character is an alphabet or not

#include <stdio.h>
int main()
{
char c;
printf("Enter a character: ");
scanf("%c",&c);
if( (c>='a'&& c<='z') || (c>='A' && c<='Z'))

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printf("%c is an alphabet\n",c);
else
printf("%c is not an alphabet\n",c);
system("pause");
return 0;
}

25)WAP that extract digits from integer in c language

#include<stdio.h>
int main(){
int num,temp,factor=1;

printf("Enter a number: ");

scanf("%d",&num);

temp=num;
while(temp){
temp=temp/10;
factor = factor*10;
}
printf("Each digits of given number are: \n");
while(factor>1){
factor = factor/10;
printf("%d ",num/factor);
num = num % factor;
}
system("pause");
return 0;
}

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26)Write a c program for finding gcd (greatest common divisor) of two

given numbers.
#include<stdio.h>
int main(){
int x,y,m,i;
printf("Insert any two number: ");
scanf("%d%d",&x,&y);
if(x>y)
m=y;
else
m=x;
for(i=m;i>=1;i--){
if(x%i==0&&y%i==0){
printf("\nHCF of two number is : %d\n",i) ;
break;
}
}
system("pause");
return 0;
}

27)Program to convert string into ASCII values in c programming

language:
#include<stdio.h>
int main(){
char str[100];
int i=0;
printf("Enter any string: ");
scanf("%s",str);
printf("ASCII values of each characters of given string:
\n");
while(str[i])
printf("%d ",str[i++]);
system("pause");
return 0;
}

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28)C program to find out the sum of infinite G.P. series.

#include<stdio.h>
int main()
{
float a,r;
float sum=0;
printf("Enter the first number of the G.P. series: ");
scanf("%f",&a);
printf("Enter the common ratio of G.P. series: ");
scanf("%f",&r);
if(1 > r)
sum = a/(1-r);
else
sum = a/(r-1);
printf("\nSum of the infinite G.P. series: %f\n",sum);
system("pause");
return 0;
}

29)Write a c program to find out the sum of series 1^3 + 2^3 + …. + n^3
Write a c program or code to find out the sum of series 1^3 + 2^3 + ….
+ n^3 that is sum of cube of n natural numbers.
#include<stdio.h>
#include<math.h>
int main()
{
int n,i;
int sum=0;

printf("Enter the n i.e. max values of series: ");

scanf("%d",&n);
sum = pow(((n * (n + 1) ) / 2),2);
printf("Sum of the series : ");

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for(i =1;i<=n;i++){
if (i != n)
printf("%d^3 + ",i);
else
printf("%d^3 = %d ",i,sum);
}
system("pause");
return 0;
}

30)Write a c program to find out the sum of series 1 + 2 + …. + n.

Sum of 1 + 2 + …. + n series in c programming language.

#include<stdio.h>
int main(){
int n,i;
int sum=0;
printf("Enter the n i.e. max values of series: ");
scanf("%d",&n);
sum = (n * (n + 1)) / 2;
printf("Sum of the series: \n");
for(i =1;i <= n;i++)
{
if (i!=n)
printf("%d + ",i);
else
printf("%d = %d \n",i,sum);
}
system("pause");
return 0;
}

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31)Palindrome in c without using string function

#include<stdio.h>
int main()
{
char str[100];
int i=0,j=-1,flag=0;
printf("Enter a string: ");
scanf("%s",str);
while(str[++j]!='\0');
j--;
while(i<j)
if(str[i++] != str[j--]){
flag=1;
break;
}
if(flag == 0)
printf("The string is a palindrome\n");
else
printf("The string is not a palindrome\n");
system("pause");
return 0;
}

32)C program to get IP address.

#include<stdlib.h>
int main()
{
system("C:\\Windows\\System32\\ipconfig");
system("pause");
return 0;
}

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33)C Program to Calculate Sum & Average of an Array

#include <stdio.h>
#define MAXSIZE 10
void main()
{
int array[MAXSIZE];
int i, num, negative_sum = 0, positive_sum = 0;
float total = 0.0, average;
printf ("Enter the value of N=");
scanf("%d", &num);
printf("Enter %d numbers (-ve, +ve and zero) \n", num);
for (i = 0; i < num; i++)
{
scanf("%d", &array[i]);
}
printf("Input array elements \n");
for (i =0;i <num;i++)
{
printf("%+3d\n",array[i]);
}
/* Summation starts */
for (i=0;i<num;i++)
{
if (array[i] < 0)
{
negative_sum =negative_sum + array[i];
}
else if (array[i] > 0)

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{
positive_sum =positive_sum + array[i];
}
else if(array[i] == 0)
{
;
}
total = total + array[i] ;
}
average = total / num;
printf("\n Sum of all negative numbers=
%d\n",negative_sum);
printf("Sum of all positive numbers= %d\n",positive_sum);
printf("\n Average of all input numbers= %.2f\n", average);
system("pause");
return(0);
}

34)Write a C program to add all the numbers entered by a user until

user enters 0.
int main()
{
int sum=0,num;
do/* Codes inside the body of do...while loops are at least
executed once.*/
{
printf("Enter a number =");
scanf("%d",&num);
sum+=num;
}
while(num!=0);
printf("sum=%d\n",sum);
system("pause");
return 0;

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35)Write a program to find the sum of first n natural numbers where n

is entered by user. Note: 1,2,3... are called natural numbers.
#include <stdio.h>
int main(){
int n, count, sum=0;
printf("Enter the value of n=\n");
scanf("%d",&n);
for(count=1;count<=n;++count) //for loop terminates if
count>n
{
sum+=count;/* this statement is equivalent to
sum=sum+count */
}
printf("Sum=%d\n",sum);
system("pause");
return 0;
}

36)Source Code to Display Prime Numbers Between two Intervals

#include <stdio.h>
int main()
{
int i,j,n,m,c=0;
printf("Enter the value from which prime number to be start,M:
");
scanf("%d",&m);
printf("Enter the value upto which prime number to be start,N:
");
scanf("%d",&n);
if (m>n)
printf("M must be smaller than N");
for(i=m;i<=n;i++)
{
for(j=1;j<=i;j++)
{

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if(i%j==0)
{
c++;
}
}
if (c==2)
{
printf("\n %d \n",i);
}
c=0;
}
system("pause");
return 0;
}

37)Source code to display Fibonacci series up to n terms

/* Displaying Fibonacci sequence up to nth term where n is entered
by user. */
#include <stdio.h>
int main()
{
int count, n, t1=0, t2=1, display=0;
printf("Enter number of terms: ");
scanf("%d",&n);
printf("Fibonacci Series: %d %d ", t1, t2); /* Displaying first
two terms */
count=2;
/* count=2 because first two terms are already displayed. */
while (count<n)
{
display=t1+t2;
t1=t2;
t2=display;

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++count;
printf(" %d ",display);
}
printf("\n\n");
system("pause");
return 0;
}

38)Source Code to Calculate Factorial Using Recursion

#include<stdio.h>
int factorial(int n);
int main()
{
int n;
printf("Enter an positive integer: ");
scanf("%d",&n);
printf("Factorial of %d = %lu",n,factorial(n));
printf("\n");
system("pause");
return 0;
}
int factorial(int n)
{
if(n!=1)
return n*factorial(n-1);
}

39)WAP to sort array elements in descending order.

#include <stdio.h>
void main ()
{
{
int number[1000];
int i,j,a,n;
printf("Enter the value of N=");
scanf("%d",&n);

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printf("Enter the numbers =\n");

for (i =0;i< n;++i)
scanf("%d",&number[i]);
/* sorting begins ... */
for (i=0;i<n;++i)
{
for (j=i+1;j<n;++j)
{
if (number[i]<number[j])
{
a =number[i];
number[i]=number[j];
number[j]=a;
}
}
}
printf("The numbers arranged in descending order are given
below=\n");
for (i=0;i<n;++i)
{
printf("%d\n",number[i]);
}
}
system("pause");
return 0;
}

40)C Program to Find the Number of Non Repeated Elements in an

Array
#include <stdio.h>
int main()
{
int array[50];
int *ptr;
int i, j, k, size, n;

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printf("\n Enter size of the array: ");

scanf("%d", &n);
printf("\n Enter %d elements of an array: \n", n);
for (i = 0; i < n; i++)
scanf("%d", &array[i]);
size = n;
ptr = array;
for (i=0;i< size;i++)
{
for (j =0;j<size;j++)
{
if (i==j)
{
continue;
}
else if (*(ptr + i) == *(ptr + j))
{
k = j;
size--;
while (k < size)
{
*(ptr + k) = *(ptr + k + 1);
k++;
}
j = 0;
}
}
}
printf("\n The array after removing duplicates is: \n");
for (i = 0; i < size; i++)
{
printf(" %d", array[i]);
}
system("pause");
return 0;
}

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41)C Program to Compute sum of the array elements using pointers.

#include<stdio.h>
#include<conio.h>
void main() {
int numArray[10];
int i, sum = 0;
int *ptr;
printf("\nEnter 10 elements : \n");
for (i=0;i<10;i++)
scanf("%d", &numArray[i]);

ptr =numArray; /* a=&a[0] */

for (i = 0; i < 10; i++) {

sum = sum + *ptr;
ptr++;
}
printf("The sum of array elements : %d\n", sum);
system("pause");
}

42)C Program to find the simple interest

#include<stdio.h>
int main() {
int amount, rate, time, si;

printf("\nEnter Principal Amount(Rs): ");

scanf("%d",&amount);

printf("\nEnter Rate of Interest : ");

scanf("%d",&rate);
printf("\nEnter Period of Time(Years): ");
scanf("%d", &time);

si =((amount * rate * time) / 100);

printf("\nSimple Interest :%d\n",si);

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system("pause");
return(0);
}

43)C Program to Implement Calender Program to display Day of the

month
#include<stdio.h>
#include<conio.h>
#include<math.h>

int fm(int date, int month, int year) {

int fmonth, leap;

//leap function 1 for leap & 0 for non-leap

if ((year % 100 == 0) && (year % 400 != 0))
leap = 0;
else if (year % 4 == 0)
leap = 1;
else
leap = 0;
fmonth = 3 + (2 - leap) * ((month + 2) / (2 * month))
+ (5 * month + month / 9) / 2;

//bring it in range of 0 to 6
fmonth = fmonth % 7;

return fmonth;
}
int day_of_week(int date, int month, int year) {

int dayOfWeek;
int YY = year % 100;
int century = year / 100;

printf("\nDate: %d/%d/%d \n",date,month,year);

dayOfWeek = 1.25 * YY + fm(date, month, year) + date - 2 *

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(century % 4);

//remainder on division by 7
dayOfWeek =dayOfWeek%7;

switch (dayOfWeek) {
case 0:
printf("weekday = Saturday");
break;
case 1:
printf("weekday = Sunday");
break;
case 2:
printf("weekday = Monday");
break;
case 3:
printf("weekday = Tuesday");
break;
case 4:
printf("weekday = Wednesday");
break;
case 5:
printf("weekday = Thursday");
break;
case 6:
printf("weekday = Friday");
break;
default:
printf("Incorrect data");
}
return 0;
}

int main() {
int date, month, year;

printf("\nEnter the year: ");

scanf("%d", &year);

printf("\nEnter the month: ");

scanf("%d", &month);

printf("\nEnter the date:");

scanf("%d", &date);

day_of_week(date, month, year);

system("pause");

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return 0;
}

44)Addition of Diagonal Elements in Matrix

#include<stdio.h>
int main() {
int i, j, mat[10][10], row, col;
int sum = 0;
printf("\nEnter the number of Rows : ");
scanf("%d", &row);
printf("\nEnter the number of Columns : ");
scanf("%d", &col);
//Accept the Elements in m x n Matrix
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
printf("\nEnter the Element a[%d][%d] : ", i, j);
scanf("%d", &mat[i][j]);
}
}
//Addition of all Diagonal Elements
for (i = 0; i < row; i++) {
for (j = 0; j < col; j++) {
if (i == j)
sum = sum + mat[i][j];
}
}
printf("\nSum of Diagonal Elements in Matrix : %d\n", sum);
system("pause");
return (0);
}

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45)C Program to find whether the given character is Vowel or

Consonant.
#include<stdio.h>
int main()
{
char ch;
printf("Enter a single character: ");
scanf("%c",&ch);

if((ch=='a')||(ch=='e')||(ch=='i')||(ch=='o')||(ch=='u')||(c
h=='A')||(ch=='E')||(ch=='I')||(ch=='O')||(ch=='U'))
{
printf("The given Character '%c' is a Vowel\n\n ",ch);
}
else
{
printf("The given Character '%c' is a Consonant\n\n ",ch);
}
system("pause");
return 0;
}

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46)C program to add two numbers using pointers

#include <stdio.h>

int main()
{
int first, second, *p, *q, sum;

printf("Enter two integers to add: ");

scanf("%d %d", &first, &second);

p = &first;
q = &second;

sum = *p + *q;

printf("Sum of entered numbers = %d\n",sum);

system("pause");
return 0;
}

47)C program to concatenate strings

#include <stdio.h>
#include <string.h>
int main()
{
char a[1000], b[1000];
printf("Enter the first string=");
gets(a);
printf("Enter the second string=");
gets(b);
strcat(a,b);
printf("String obtained on concatenation is %s\n",a);
system("pause");
return 0;
}

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48)Linear search in C.
#include <stdio.h>
int main()
{
int array[100], search, c, n;
printf("Enter the number of elements in array=");
scanf("%d",&n);
printf("Enter %d integer(s)=\n",n);
for (c = 0; c < n; c++)
scanf("%d", &array[c]);
printf("Enter the number to search\n");
scanf("%d", &search);
for (c = 0; c < n; c++)
{
if (array[c] == search)
{
printf("%d is present at location %d.\n", search, c+1);
break;
}
}
if (c == n)
printf("%d is not present in array.\n", search);
system("pause");
return 0;
}

49)C program to print patterns of numbers and stars.

#include <stdio.h>
int main()
{
int row,c,n,temp;

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printf("Enter the number of rows in pyramid of stars you wish

to see =");
scanf("%d",&n);
temp = n;
for (row =1; row<= n ;row++ )
{
for (c = 1 ; c < temp ; c++ )
printf(" ");
temp--;
for ( c = 1 ; c <= 2*row - 1 ; c++ )
printf("*");
printf("\n");
}
system("pause");
return 0;

}
50)C program to find frequency of characters in a string
#include <stdio.h>
#include <string.h>

int main()
{
char string[100];
int c = 0, count[26] = {0};
printf("Enter a string\n");
gets(string);
while (string[c] != '\0')
{
if (string[c] >= 'a' && string[c] <= 'z')
count[string[c]-'a']++;
c++;
}
for (c = 0; c < 26; c++)
{
if (count[c] != 0)
printf("%c occurs %d times in the entered
string.\n",c+'a',count[c]);
}
system("pause");

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return 0;
}

51)WAP to find transpose of matrix,sum of matrix and its transpose and

finally find it whether it is skew symmetric or not.
#include<stdio.h>
#include<conio.h>
int main()
{
int m, n, c, d, matrix[10][10],
transpose[10][10],sum[10][10];
printf("Enter the number of rows and columns of matrix = ");
scanf("%d %d",&m,&n);
printf("Enter the elements of matrix=\n");
for ( c =0;c< m;c++ )
for (d=0;d<n;d++ )
scanf("%d",&matrix[c][d]);
printf("\n\n");
printf("Matrix is\n\n");
for(c=0;c<m ;c++)
{
for(d=0;d<n ;d++)
{
printf("%d\t",matrix[c][d]); /* '\t' used for Tab */
}
printf("\n"); /* '\n' used for next line character */
}
for( c=0;c<m;c++)
{
for(d=0 ;d<n;d++)
{
transpose[d][c]=matrix[c][d];
}
}
printf("After Transpose\n\n\n");
for(c=0 ; c<n ; c++)
{

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for(d=0 ; d<m ; d++)

{
printf("%d\t",transpose[c][d] );
}
printf("\n");
}
for(c=0;c<m ;c++)
{
for(d=0 ; d<n ; d++)
{
sum[c][d]=matrix[c][d]+transpose[c][d];
}
}
printf("Sum of Matrix and its transpose= \n\n\n");
for(c=0;c<m ;c++)
{
for(d=0;d<n;d++)
{
printf("%d\t" , sum[c][d] );
}
printf("\n");
}
printf("\n");
if ( m == n ) /* check if order is same */
{
for ( c = 0 ; c<m;c++)
{
for ( d = 0 ;d<m ;d++)
{
if ( matrix[c][d] !=transpose[c][d] )
break;
}
if ( d != m )
break;
}
if ( c == m )
printf("Skew-Symmetric matrix.\n\n");
}
else
printf("Not a Skew-symmetric matrix.\n\n");
system("pause");
return 0;
}

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52)WAP to sort the names alphabetically in ascending order.

#include<stdio.h>
#include<string.h>

void main() {
char s[100][50],t[1000],n;
int i,j;
printf("Enter total number of names = ");
scanf("%d",&n);
printf("\nEnter strings:\n");
for (i =0;i<n;i++)
scanf("%s", s[i]);
for (i =1;i <n; i++) {
for (j =1; j<n; j++) {
if (strcmp(s[j - 1], s[j]) > 0) {
strcpy(t, s[j - 1]);
strcpy(s[j - 1], s[j]);
strcpy(s[j], t);
}
}
}
printf("\nStrings in order are : ");
for (i =0; i<n; i++)
printf("\n%s",s[i]);
getch();
}

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53)C program to find the frequency of elements in array

#include<stdio.h>
int main()
{
int n, t, i, j, arr[100],len, halflen,flag=0,count=0;
printf("Enter number of elements to insert in an array:");
scanf("%d",&len);
printf("Enter elements to insert in an array:\n");
for(i=0;i<len;i++){
scanf("%d",&t);
arr[i]=t;
}
printf("\n");

for(i=0;i<len;i++){
count=1;
for(j=i+1;j<=len-1;j++){
if(arr[i]==arr[j] && arr[i]!='\0'){
count++;
arr[j]='\0';
}
}
if(arr[i]!='\0'){
printf("%d is repeated %d times.\n",arr[i],count);
}
}
getch();
return 0;
}

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54)C code to print or display Upper triangular matrix.

#include<stdio.h>
int main()
{
int a[3][3],i,j;
float determinant=0;

printf("Enter the 9 elements of matrix:\n");

for(i=0;i<3;i++)
for(j=0;j<3;j++)
scanf("%d",&a[i][j]);
printf("\n");
printf("\nThe matrix is\n");
for(i=0;i<3;i++){
printf("\n");
for(j=0;j<3;j++)
printf("%d\t",a[i][j]);
}

printf("\nSetting zero in upper triangular matrix=");

printf("\n");
for(i=0;i<3;i++){
printf("\n");
for(j=0;j<3;j++)
if(i<=j)
printf("%d\t",a[i][j]);
else
printf("%d\t",0);
}
printf("\n");
printf("\n");
system("pause");
return 0;

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55)To find the average and numbers greater than average and less
than average between two input numbers in an array.
#include <stdio.h>
#include <stdlib.h>
int main()
{
long int ar[90000],n,i;
float avg,sum=0;
printf("Enter the size of the array=");
scanf("%ld",&n);
printf("\n");
printf("Enter the numbers in the array to find their
average=\n");
for(i=0;i<n;i++)
{
scanf("%d",&ar[i]);
sum=sum+ar[i];
}
avg=sum/n;
printf("\n");
printf("Average is %f\n",avg);
printf("\n");
printf("The numbers greater than the average are: \n");
for(i=1;i<n;i++)
{
if(ar[i]>avg)
{
printf("%d\n",ar[i]);
}

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}
printf("\n");
printf("\n");
printf("The numbers smaller than the average are: \n");
for(i=1;i<n;i++)
{
if(ar[i]<avg)
{
printf("%d\n",ar[i]);
}
}
printf("\n");
system("pause");
return(1);

}
56)To calculate sum of money according to number and value of notes.
#include <stdio.h>
int main()
{
double X1,X2,X3,X4,X5,X6,X7,X8,X9,sum;
printf("This calculates total amount you entered according to
number and value of notes");
printf("\n");
printf("Enter number of Rs 1000,X1= ");
scanf("%Lf",&X1);
X1=X1*1000;
printf("\nEnter number of Rs 500,X2= ");
scanf("%Lf",&X2);
X2=X2*500;
printf("\nEnter number of Rs 100,X3= ");

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scanf("%Lf",&X3);
X3=X3*100;
printf("\nEnter number of Rs 50,X4= ");
scanf("%Lf",&X4);
X4=X4*50;
printf("\nEnter number of Rs 25,X5= ");
scanf("%Lf",&X5);
X5=X5*25;
printf("\nEnter number of Rs 10,X6= ");
scanf("%Lf",&X6);
X6=X6*10;
printf("\nEnter number of Rs 5,X7= ");
scanf("%Lf",&X7);
X7=X7*5;
printf("\nEnter number of Rs 2,X8= ");
scanf("%Lf",&X8);
X7=X7*2;
printf("\nEnter number of Rs 1,X9= ");
scanf("%Lf",&X9);
X7=X7*9;
sum=X1+X2+X3+X4+X5+X6+X7,X8,X9;
printf("\nTotal amount in rupees that Jaikishan owns is Rs
%Lf\n",sum);
scanf("%Lf",&sum);
return(1);
}

57)C program to find maximum element and minimum element in array

#include <stdio.h>
int main()
{

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int array[100], maximum, size, c, location1 =

1,minimum,location2=1;
printf("Enter the number of elements in array=");
scanf("%d", &size);
printf("\n");
printf("Enter %d integers=\n", size);
for (c = 0; c< size; c++)
scanf("%d", &array[c]);
maximum = array[0];
for (c=1;c<size;c++)
{
if (array[c] >maximum)
{
maximum = array[c];
location1 = c+1;
}
}
printf("\n");

printf("Maximum element is present at location %d and it's

value is %d.\n", location1,maximum);
minimum=array[-0];
for (c=1;c<size;c++)
{
if (array[c]<minimum)
{
minimum =array[c];
location2 = c+1;
}
}
printf("Minimum element is present at location %d and it's value
is %d.\n", location2,minimum);
system("pause");
return 0;
}

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58)FROM UPPERCASE TO LOWER CASE USING C PROGRAM.

#include<stdio.h>
#include<string.h>
int main(){
char str[20];
int i;
printf("Enter any string(uppercase)=");
scanf("%s",str);
printf("\n");
printf("The string is=%s",str);
for(i=0;i<=strlen(str);i++){
if(str[i]>=65&&str[i]<=90)
str[i]=str[i]+32;
}
printf("\nThe string in lower case is=%s",str);
printf("\n");
return 0;
}

59)Write a c program to convert the string from lower case to upper

case.
#include<stdio.h>
#include <stdlib.h>
int main(){
char str[20];
int i;
printf("Enter any string=");
scanf("%s",str);
printf("\n");
printf("The string is=%s",str);
for(i=0;i<=strlen(str);i++){
if(str[i]>=97&&str[i]<=122)
str[i]=str[i]-32;
}
printf("\n");
printf("\nThe string in uppercase is=%s",str);
printf("\n");
system("pause");

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return 0;
}

60)Fibonacci series in c by using recursion.

#include<stdio.h>
void printFibonacci(int);
int main(){
int k,n;
long int i=0,j=1,f;
printf("Enter the range of the Fibonacci series: ");
scanf("%d",&n);
printf("\n");
printf("Fibonacci Series:\n");
printf("%d %d",0,1);
printFibonacci(n);
printf("\n");
return 0;
}
void printFibonacci(int n)
{
static long int first=0,second=1,sum;
if(n>0){
sum = first + second;
first = second;
second = sum;
printf("%ld ",sum);
printFibonacci(n-1);
}
}

61)Number Pattern
#include <stdio.h>
int main()
{
int i, j;

C programming programs 50th

sanjaya chauwal
For Update :sanjayachauwal.wordpress.com Sanjaya chauwal

for(i=5;i>=1;i--)
{
for(j=5;j>=i;j--)
{
printf("%d",j);
}
printf("\n\n");
}
system("pause");
return 0;
}

62)Number Pattern
#include <stdio.h>
int main()
{
int i, j;
for(i=1;i<=5;i++)
{
for(j=1;j<=i;j++)
{
printf("%d",i);
}
printf("\n\n");
}
system("pause");
return 0;
}

63)Number Pattern

C programming programs 51st

sanjaya chauwal
For Update :sanjayachauwal.wordpress.com Sanjaya chauwal

int main()
{
int i, j;
for(i=1;i<=5;i++)
{
for(j=5;j>i;j--)
printf(" ");
for(j=1;j<=i;j++)
printf("%d ",j);
for(j=j-2;j>=1;j--)
printf("%d ",j);
printf("\n");
}
System(“pause”);
return 0;
}

64)Number pattern:
int main()
{
int i,j,k;
for(i=5;i>=1;i--)
{
if(i%2==1) k=1;
else k=i;
for(j=1;j<=i;j++)
{
printf("%d",k);
if(i%2==1) k++;
else k--;
}
printf("\n\n");
}
system("pause");
return 0;
}

C programming programs 52nd

sanjaya chauwal
For Update :sanjayachauwal.wordpress.com Sanjaya chauwal

65)
#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=5;i++)
{
for(j=5;j>=1;j--)
{
if(j<=i)
printf("%d",j);
else
printf(" ");
}
printf("\n\n");
}
system("pause");

return 0;
}

66)Alphabet Patterns:
#include <stdio.h>
int main()
{
int i, j;
for(i=1;i<=5;i++)

C programming programs 53rd

sanjaya chauwal
For Update :sanjayachauwal.wordpress.com Sanjaya chauwal

{
for(j=i;j<=5;j++)
{
printf("%c", 'A'-1 + j);
}
printf("\n\n");
}
system("pause");
return 0;
}

67)#include <stdio.h>

int main()
{
int i, j;
for(i=1;i<=5;i++)
{
for(j=1;j<=i;j++)
{
printf("%c",'A'-1 + i);
}
printf("\n\n");
}
system("pause");
return 0;
}

C programming programs 54th

sanjaya chauwal
For Update :sanjayachauwal.wordpress.com Sanjaya chauwal

68)
#include <stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++)
{
for(j=1;j<=i;j++)
{
printf("%c",'A' + j-1);
}
printf("\n\n");
}
system("pause");
return 0;
}

69)C Program to Store Information of Single Variable

#include <stdio.h>
struct student{
char name[50];
int roll;
float marks;
};
int main()
{
struct student s;
printf("Enter information of students:\n\n");
printf("Enter name: ");
scanf("%s",s.name);
printf("Enter roll number: ");
scanf("%d",&s.roll);
printf("Enter marks: ");
scanf("%f",&s.marks);
printf("\nDisplaying Information\n");
printf("Name: %s\n",s.name);
printf("Roll: %d\n",s.roll);

C programming programs 55th

sanjaya chauwal
For Update :sanjayachauwal.wordpress.com Sanjaya chauwal

printf("Marks: %f\n",s.marks);
system("pause");
return 0;
}

70)Using structure:
#include <stdio.h>
#include <conio.h>
#include <string.h>
struct details
{
char name[30];
int age;
float salary;
};
int main()
{
struct details detail;
printf("\nEnter name: ");
gets(detail.name);
printf("\nEnter age:");
scanf("%d",&detail.age);
printf("\nEnter Salary:");
scanf("%f",&detail.salary);
printf("\n\n\n");
printf("Name of the Employee : %s \n",detail.name);
printf("Age of the Employee : %d \n",detail.age);
printf("Salary of the Employee : %f \n",detail.salary);
getch();

C programming programs 56th

sanjaya chauwal