Output

Enter the numbers : 4 7 2

Sum of three number is : 13.00

Average of this three numbers : 4.333

#include<stdio.h>

int main()

float a , b , c , sum , avg ;

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

scanf("%f %f %f", &a , &b , &c );

sum = a + b + c ;

printf("Sum of three number is : % .2f \n",sum);

avg = sum / 3 ;

printf("Average of this three numbers :% .3f ",avg);

return 0;

}
Output

Size of int data type is : 4 bytes

Size of float data type is : 4 bytes

Size of char data type is : 1 bytes

Size of double data type is : 8 bytes

#include<stdio.h>

int main()

int a,b,c,d,e;

a=sizeof(int);

b=sizeof(float);

c=sizeof(char);

d=sizeof(double);

printf("size of int data type is : %d bytes\n",a);

printf("size of float data type is : %d bytes\n",b);

printf("size of char data type is : %d bytes\n",c);

printf("size of double data type is : %d bytes\n",d);

return 0;

}
Output

Enter the first number

Enter the second number

Enter the third number

The greatest number is : 8

#include<stdio.h>

int main()

int a , b , c , result;

printf("Enter the first number\n");

scanf("%d",&a);

printf("Enter the second number\n");

scanf("%d",&b);

printf("Enter the third number\n");

scanf("%d",&c);

result=(a>b)?(a>c?a:c):(b>c?b:c);

printf("The greatest number is : %d",result);

return 0;

}
output

Enter any number

The number is positive

OR

Enter any number

-6

The number is negative

#include<stdio.h>

int main()

int a;

printf("Enter any number \n");

scanf("%d", &a);

if(a>0)

printf("The number is positive");

if(a<0)

printf("The number is negative \n");

if(a==0)

printf("Please enter a non-zero number");

return 0;

}
Output

Enter the marks :

56

You are failed

Enter the marks :

98

The grade is A

Enter the marks :

79

The grade is B

Enter the marks :

65

The grade is C

Enter the marks :

57

The grade is D
5. Program to print the grade of a student using nested if.

#include<stdio.h>

int main()
{
int mark;
printf("Enter the marks : \n");
scanf("%d",&mark);
if(mark>=90)
printf("The grade is A");
else
{
if(mark>=80)
printf("The grade is B");
else
{
if(mark>=70)
printf("The grade is C");
else
{
if(mark>=60)
printf("The grade is D");
else
printf("You are failed");
}
}
}
return 0;
}
Output

Enter two numbers

3 6

The operations are

1. Addition

2. Subtraction

3. Division

4. Multiplication

5. Modulus

Enter your choice 1

Answer = 9
6. Program to perform arithmetic operations using switch statement.

#include <stdio.h>

int main()

int num1, num2,n,result;

printf(" enter two numberss \n");

scanf ("%d %d", &num1,&num2);

printf("The operations are\n");

printf(" 1.Addition\n 2.Subtraction\n 3.Division \n 4.Multiplication \n 5.Modulus\n");

printf("Enter your choice");

scanf("%d",&n);

switch(n) {

case 1: result=num1+num2;

printf("Answer = %d", result);

break;

case 2: result=num1-num2;

printf("Answer = %d", result);

break;

case 3: result=num1*num2;

printf("Answer = %d", result);

break;

case 4: result=num1/num2;

printf("Answer = %d", result);

break;

case 5: result=num1%num2;

printf("Answer = %d", result);

break;

default: printf("Wrong choice");

break;

}}
Output

Enter the values for a,b,c

-4

The rests are real and same 2.000000 2.000000

#include<stdio.h>

#include<math.h>

int main()

int a,b,c,desc;

float root1, root2;

printf("Enter the values for a,b,c");

scanf("%d %d %d",&a,&b,&c);

desc=b*b-4*a*c;

if(desc>0)

root1=-b+sqrt(desc)/2*a;

root2=-b-sqrt(desc)/2*a;

printf("The roots are real and different: %f %f", root1, root2);

else if(desc==0)

root1=root2=-b/2*a;

printf("The roots are real and same %f %f",root1,root2);

else

printf("Roots are imaginary");

}
Output

Enter an integer: 5

Factorial of 5 = 120
8. Program to find factorial of a given number.

#include <stdio.h>

int main() {

int n, i;

unsigned long long fact = 1;

printf("Enter an integer: ");

scanf("%d", &n);

// shows error if the user enters a negative integer

if (n < 0)

printf("Error! Factorial of a negative number doesn't exist.");

else {

for (i = 1; i <= n; ++i) {

fact *= i;

printf("Factorial of %d = %llu", n, fact);

return 0;

}
output

Enter the limit 8

The series is: 0 1 1 2 3 5 8 13

#include <stdio.h>

int main() {

int i,n,a=0,b=1,next;

printf("enter the limit ");

scanf("%d",&n);

printf("the series is: ");

printf("%d %d",a,b);

for(i=2;i<n;i++)

next=a+b;

a=b;

b=next;

printf(" %d ", next);

return 0;

}
output

Enter the number of elements: 5

Enter 5 numbers:

Sum of the numbers: 25

#include <stdio.h>

int main() {

int n, i, sum = 0;

printf("Enter the number of elements: ");

scanf("%d", &n);

int arr[n];

printf("Enter %d numbers:\n", n );

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

scanf("%d", &arr[i]);

sum += arr[i];

printf("Sum of the numbers: %d\n", sum);

return 0;

}
Output

Enter the limit 5

Enter 5 numbers

The sorted array in ascending order:

6
11. Program to sort n numbers using array.

#include <stdio.h>

int main()

int i, j, a, n, array [30];

printf("Enter the limit \n");

scanf("%d", &n);

printf("Enter %d numbers\n",n);

for(i = 0; i < n; ++i)

scanf("%d", &array[i]);

for(i = 0; i < n; ++i)

for(j=i+1; j<n; ++j)

if(array[i]>array[j])

a = array[i];

array[i]=array[j];

array[j] = a;

printf("The sorted array in ascending order: \n");

for (i = 0; i < n; ++i)

printf("%d\n", array[i]);

return 0;

}
Output

enter the string mam

The string mam is not palindrome

enter the string sam

The string sam is not palindrome

#include<stdio.h>

#include <string.h>

int main() {

char str[20];

int i, length, flag=0;

printf("enter the string ");

scanf("%s", str);

length=strlen(str);

for(i = 0; i < length/2; i++)

if(str[i] != str[length-i-1])

flag=1;

break;

if(flag)

printf("The string %s is not palindrome",str);

else

printf("The string %s is palindrome",str);

return 0;

}
Output

Enter the range:

15

The prime numbers in between the range 1 to 15 : 2 3 5 7 11 13

#include<stdio.h>

int main()

Int i, num, n, count;

printf ("Enter the range:\n ");

scanf ("%d", &n);

printf ("\n The prime numbers in between the range 1 to %d : " , n);

for (num = 1; num <=n; num ++) {

count = 0;

for (i=2; i<=num/2;i++)

if (num%i==0) {

count++;

break;

If (count==0 && num! = 1)

printf("%d ",num);

return 0;

}
Output:

Length of str1 is : 27

After copying

str2: COLLEGE OF APPLIED SCIENCE

After concatenation

str2: COLLEGE OF APPLIED SCIENCE MANJESHWARAM

COLLEGE OF APPLIED SCIENCE is less than COLLEGE OF APPLIED SCIENCE MANJESHWARAM

#include <stdio.h>

#include <string.h>

int main() {

char str1[] = "COLLEGE OF APPLIED SCIENCE";

char str2[40]=" ";

printf("Length of str1 is : %d\n", strlen(str1));

strcpy(str2, str1);

printf("After copying\n str2: %s\n", str2);

strcat(str2, " MANJESHWARAM");

printf("After concatenation\n str2: %s\n", str2);

int result = strcmp(str1, str2);

if (result == 0)

printf("%s is equal to %s\n",str1,str2);

else if (result < 0)

printf("%s is less than %s\n",str1,str2);

else

printf("%s is greater than %s\n",str1,str2);

return 0;

}
Output:

enter the number of row : 2

enter the number of columns : 2

Enter element of ist matrix :

Enter elements a[1 1] : 1

Enter elements a[1 2] : 2

Enter elements a[2 1] : 3

Enter elements a[2 2] : 4

Enter element of 2nd matrix:

Enter elements b[1 1] : 1

Enter elements b[1 2] : 2

Enter elements b[2 1] : 3

Enter elements b[2 2] : 4

sum of two matrices:

2 4

6 8
15. Program to perform any matrix operation.

#include<stdio.h>
int main()
{
int r, c, a[100][100], b[100][100], sum[100][100], i, j;
printf("enter the number of row : ");
scanf("%d",&r);
printf("enter the number of columns : ");
scanf("%d",&c);
printf("\nEnter element of 1st 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]);
}
printf("Enter element of 2nd matrix: \n");
for (i = 0 ; i<r; ++i)
for( j = 0 ; j<c; ++j)
{
printf("Enter elements b[%d %d] : ", i + 1 , j + 1 ) ;
scanf("%d",&b[i][j]);
}
for (i=0; i<r; ++i)
for(j=0; j<c; ++j)
{
sum[i][j]=a[i][j]+b[i][j];
}
printf("\nsum of two matrices: \n");
for ( i = 0 ;i<r; ++i)
for ( j = 0 ;j<c; ++j)
{
printf("%d ",sum[i][j]);
if(j==c-1)
printf("\n");
}
return 0;