1 /*Practical No.

1*/

/* Implement C programs to read two numbers and display these two numbers*/

#include<stdio.h>

#include<conio.h>

void main()

int a,b;

clrscr();

printf("\n Please Enter the Two Numbers:");

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

printf("\n The First Number=%d",a);

printf("\n The Second Number=%d",b);

getch();

2 /*Practical No. 2.1*/

/* Implement C programs using Constants and Variables (Program to find area and volume of sphere) */

#include <stdio.h>

#include <conio.h>

void main()

float r,area,vol;

clrscr();

printf("Enter radius ofsphere: ");

scanf("%f",&r);

area=4*3.14*r*r;

vol=(4*3.14*r*r*r)/3;

printf("Area of sphere = %f",area);

getch();

3 /*Practical No. 2.2*/

/* Implement C programs using Constants and Variables (Program for Gross Salary) */

#include<stdio.h>

#include<conio.h>

void main()

int basic;

float da,hra,gs;

clrscr();

printf("\n\tEnter the BASIC SALARY:");

scanf("%d",&basic);

da=0.4*basic;//DA is 40% of Basic Salary

printf("Dearness Allonce=%f",da);

hra=0.2*basic;// HRA is 20% of Basic Salary

printf("House Rent Allounce=%f",hra);

gs=basic+da+hra;

printf("\n Gross Salary is==%f",gs);

getch();

4 /*Practical No. 2.3*/

/* Implement C programs using Constants and Variables (Program for Percentage Marks) */
#include<stdio.h>

#include<conio.h>

void main()

int m1,m2,m3,m4,m5;

float sum,per;

clrscr();

printf("\n Please Enter the Marks of five subjects:");

scanf("%d%d%d%d%d",&m1,&m2,&m3,&m4,&m5);

sum=m1+m2+m3+m4+m5;

printf("\n The Sum of Marks =%d",sum);

per=(sum/500)*100;

printf("\n The Percentage of Marks=%f",per);

getch();

5 /*Practical No. 3.1 */

Title: Program to convert temperature in Celsius to Fahrenheit */

#include <stdio.h>

#include <conio.h>

void main()

int C;

float F;

clrscr();

printf("Enter Temperature in Celsius: ");

F=(1.8*C)+32 /*Celsius to Fahrenheit*/

printf("Temperature in Fahrenheit= %f",F);

getch();

6 /*Practical No. 3.2 */

Title: Program to convert temperature in Fahrenheit degree to Centigrade degree*/

#include <stdio.h>

#include <conio.h>

void main()

int F;

float C;

clrscr();

printf("Enter Temperature in Fahrenheit: ");

scanf("%d",&F);

C=(F-32)/1.8; /*Fahrenheit to Centigrade*/

printf("Temperature in Centigrade= %f",C);

getch();

/*Output:

Enter Temperature in Fahrenheit: 90

Temperature in Centigrade= 32.222221

Enter Temperature in Fahrenheit: 120

Temperature in Centigrade= 48.888889

*/
7 /*Practical No. 3.3 */

Title: Program to find area and perimeter of rectangle */

#include <stdio.h>

#include <conio.h>

void main()

float l,b,area,perimeter;

clrscr();

printf("Enter length of Rectangle: ");

scanf("%f",&l);

printf("Enter breadth of Rectangle: ");

scanf("%f",&b);

area=l*b; /*Calculate Area*/

perimeter=2*(l+b); /*Calculate Perimeter*/

printf("Area= %f",area);

printf("\nPerimeter= %f",perimeter);

getch();

/*Output:

Enter length of Rectangle: 12

Enter breadth of Rectangle: 10

Area= 120.000000

Perimeter= 44.000000
*/

8 /*Practical No. 4

Title: Program to demonstrate Implicit and Explicit data type conversion */

#include <stdio.h>

#include <conio.h>

void main()

int no1,no2;

float div;

char ch;

clrscr();

printf("Implicit Data Type Conversion:");

printf("\nEnter any character: ");

scanf("%c",&ch);

printf("Character= %c Character= %d",ch,ch);

printf("\n\nExplicit Data Type Conversion:");

printf("\nEnter Two integers: ");

scanf("%d %d",&no1,&no2);

div=no1 / (float) no2; /*Explicit Data type conversion*/

printf("Division= %f",div);

getch();

/*Output:

Implicit Data Type Conversion:

Enter any character: e

Character= e Character= 101

Explicit Data Type Conversion:

Enetr Two integers: 12 5

*/

9 /* Practical No-5

Title :- Implement a C program for formatted Input Output Statement.*/

#include<stdio.h>

#include<conio.h>

void main()

int roll;

float p;

clrscr();

/*printf("Enter the Roll No:-");

scanf("%d", &roll);

printf("Enter the Percentage:");

scanf("%f", &p);

//printf("Enter the First Name :-");

//scanf("%s",&fn); */

printf("\n*******************************");

printf("\n_______________________________");

printf("\n|Roll No | Name | Class | Percentage |");

printf("\n| 1 | Rahul | FYCM | 67 |" );

printf("\n| 2 | Sachin | SYCM | 98 |" );

printf("\n| 3 | Saurav | SYCM | 98 |" );

printf("\n| 4 | Sachin | SYCM | 98 |" );

printf("\n| 5 | Sachin | SYCM | 98 |" );

printf("\n| 6 | Sachin | SYCM | 98 |" );

printf("\n*******************************");

getchar();

10 /* Practical No.6.1

Title:-Program to check numbers are equal or not */

#include <stdio.h> // Include the standard input/output header file.

void main()

int n1,n2; // Declare two integer variables 'n1' and 'n2'.

printf("Input the values for Number1 and Number2 : "); // Prompt the user to input values for
Number1 and Number2.

scanf("%d %d", &n1, &n2); // Read and store the user's input in 'n1' and 'n2'.

if (n1 == n2) // Check if Number1 is equal to Number2.

printf("Number1 and Number2 are equal\n"); // Print a message if Number1 and Number2 are
equal.

else

printf("Number1 and Number2 are not equal\n"); // Print a message if Number1 and Number2 are
not equal.

getch();

/*Output */

Input the values for Number1 and Number2 : 15 15

Number1 and Number2 are equal

Title:-Program to find largest of 2 numbers using conditional operators*/

#include<stdio.h>

#include<conio.h>

void main()

int no1, no2 ;

clrscr();

printf("Enter 2 intergers: ");

scanf("%d %d ",&no1, &no2);

if(no1 > no2)

{ Printf(“ Largest number is %d”,no1); }

Else

{ Printf(“Largest Number is %d”, no2);

getch();

/*Output:

Enter 2 integers: 12 56

Largest number is 56

12 /* Practical No.7.1

Title: Program to check the number is ODD or EVEN */

#include <stdio.h>

int main()

int num;

printf("Enter an integer: ");

// true if num is perfectly divisible by 2

if(num % 2 == 0)

printf("%d is even.", num);

else

printf("%d is odd.", num);

return 0;

/*Output */

Enter an integer: -7

-7 is odd.

13 /* Practical No.7.2

Title: Program to find greatest of 3 numbers*/

#include<stdio.h>void main()

{ int a,b,c; int big; printf("Enter any there numbers:"); scanf("%d%d%d",&a,&b,&c); if(a>b && a>c)
big = a; else if(b>c) big = b; else big = c;

printf("Largest number is: %d",big); return 0;}Sample output:Enter any there numbers: 13 25 6Largest
number is: 25

14 /* Practical No.10

Title: - Program using if..else if ladder statement.

#include<stdio.h>

main( )

int a, b, c, d, e, per;

printf(“Enter marks of four subjects : “);

scanf(“%d %d %d %d”, &a, &b, &c, &d);

if(a < 40 || b < 40 || c < 40 || d < 40)

printf(“\n You have failed in one subject”);

per = (a + b + c + d) / 4;

if(per>=75)
printf(“\n Distinction”);

else if(per<=74 && per> = 60)

printf(“\ n First class”);

else

if (per <=59 && per >=55)

printf(“\n Higher second class”);

else

if(per <=54 && per >=40)

printf(“Second class);

else

printf(“\n Fail”);

15 /*Practical No.11

Title: Program to print English Calendar months as per given number (eg: If input is 4 then print “April”)
using Switch statement

#include<stdio.h>

#include<conio.h>

void main()

int no;

clrscr();

printf("Enter month number: ");

scanf("%d", &no);

switch(no)

case 1: printf("JANUARY");

break;

case 2: printf("FEBRUARY");
break;

case 3: printf("MARCH");

break;

case 4: printf("APRIL");

break;

case 5: printf("MAY");

break;

case 6: printf("JUNE");

break;

case 7: printf("JULY");

break;

case 8: printf("AUGUST");

break;

case 9: printf("SEPTEMBER");

break;

case 10: printf("OCTOBER");

break;

case 11: printf("NOVEMBER");

break;

case 12: printf("DECEMBER");

break;

default: printf("Incorrect month Number...!");

getch();

/*Output:

Enter month number: 3

Reason: MARCH

Enter month number: 11

Enter month number: 14

Incorrect month Number...!

*/

16 /* Practical No.12

Title:-Program to to print day of week by taking bunber 1 to 7*/

#include<stdio.h>

#include<conio.h>

void main()

{ int no;

clrscr();

printf("Enter day number: ");

scanf("%d",&no);

switch(no)

{ case 1: printf("Day: Monday");

break;

case 2: printf("Day: Tuesday");

break;

case 3: printf("Day: Wednesday");

break;

case 4: printf("Day: Thursday");

break;

case 5: printf("Day: Friday");

break;

case 6: printf("Day: Saturday");

break;

case 7: printf("Day: Sunday");

break;

default: printf("Incorrect Day Number...!");

/* Output:

Enter day number: 3

Day: Wednesday

Enter day number: 9

Incorrect Day Number...! */

17 /*Practical No.13.1 do….while loop

Title: Program to find sum of digits */

#include <stdio.h>

#include <conio.h>

void main()

int no,digit,sum;

clrscr();

printf("Enter a number: ");

scanf("%d",&no);

sum=0;

while(no!=0)

digit=no%10; /*Extract last digit*/

sum=sum+digit; /*Add digit*/

no=no/10; /*Remove last digit-3*/

printf("Sum of digits=%d",sum);

getch();

/*Output:

Enter a number: 3784

*/

18 /*Practical No.13.2 do…while

Title: Program to generate multiplication tables of 1 to 5 */

#include <stdio.h>

#include <conio.h>

void main()

int no,i,mult;

clrscr();

printf("Multiplication Tables: \n");

for(no=1;no<=5;++no)

printf("Multiplication Table of %d\n",no);

for(i=1;i<=10;++i)

mult=no*i; /*Generate Multiplication table number*/

printf("%2d ",mult);

printf("\n\n");

getch();

/*Output:

Multiplication Tables:

Multiplication Table of 1

1 2 3 4 5 6 7 8 9 10

Multiplication Table of 2
2 4 6 8 10 12 14 16 18 20

Multiplication Table of 3

3 6 9 12 15 18 21 24 27 30

Multiplication Table of 4

4 8 12 16 20 24 28 32 36 40

Multiplication Table of 5

5 10 15 20 25 30 35 40 45 50

*/

19 /*Practical No.15 for loop

Title: Program to generate pattern of pyramid of ‘*’ */

#include <stdio.h>

#include <conio.h>

void main()

{ int i, j, rows;

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

scanf("%d", &rows);

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

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

printf("* ");

} printf("\n");

}getch(); }

/*Output:

**

***

****

*****
20 /*Practical No: 16.1

Program to input 5 numbers using array and display sum of it */

#include<stdio.h>

int main()

int arr[5], i, sum=0;

printf("Enter Five numbers :");

for(i=0;i<5;i++)

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

for(i=0;i<5;i++)

sum=sum+arr[i];

printf("\nThe sum of the given 5 numbers is : %d\n", sum);

return 0;

}
21 /*Practical No: 16.2

Program to print array in ascending order

#include <stdio.h>

void main()

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

printf("Enter the value of N \n");

scanf("%d", &n);

printf("Enter the numbers \n");

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

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

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 ascending order are given below \n");

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

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

}
22 /*Practical No: 17

Program to perform 3*3 matrix addition */

#include<stdio.h>

#include<conio.h>

void main()

int A[3][3],B[3][3],C[3][3], i, j;

clrscr();

/*Accept 9 elements of Matrix-A*/

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

for(i=0;i<3;++i)

{ for(j=0;j<3;++j)

{ scanf("%d",&A[i][j]);

}}

printf("\nEnter 9-elements of matrix B:\n");

for(i=0;i<3;++i)
{ for(j=0;j<3;++j)

{ scanf("%d",&B[i][j]);

}}

/*Matrix Addition*/

for(i=0;i<3;++i)

for(j=0;j<3;++j)

C[i][j]=A[i][j]+B[i][j];

}}

/*Display resultant matrix*/

printf("\nResultant matrix:\n");

for(i=0;i<3;++i)

for(j=0;j<3;++j)

printf("%2d ",C[i][j]);

} printf("\n");

} getch();

/*Output:

Enter 9-elements of matrix A:

123456789

Enter 9-elements of matrix B:

14 31 21 51 61 71 13 3 4

Resultant matrix:

15 33 24

55 66 77

20 11 13 */
23 /*Practical No.18.1

Title: Program to Calculate Length of given string */

#include <stdio.h>

int main() {

char s[] = "Programming is fun";

int i;

for (i = 0; s[i] != '\0'; ++i);

printf("Length of the string: %d", i);

return 0;

/* Output: */

Length of the string: 18

24 /*Practical No.18.2 Title: Program to Calculate Reverse of given string */

#include <stdio.h>

#include <conio.h>

void main()

char str[60];

int leng, g;

// Printing the program name and what the program will do

printf("Program in C for reversing a given string n ");

printf("Please insert the string you want to reverse: ");

// fetch the input string from the user

scanf( "%s", str );

// This will find the length of your string with the help of strlen() function of the string.h header file
leng = strlen(mystrg);

// iterate through each and every character of the string for printing it backward or reverse direction

for(g = leng - 1; g >= 0; g--)

printf("Reverse of String : %c", str[g]);

return 0;

Output

Program in C for reversing a given string

Please insert the string you want to reverse: kkwp

Reverse of String: pwkk

25 /* Practical No.20

Accept and Display 10 Employee information using Structure */

#include<stdio.h>

#include<conio.h>

struct Employee

char name[30];

int id;

int salary;

};

int main()

//number of employees

int i;
 //array to store structure values of all employees

struct Employee emp[5];

clrscr();

//Taking each employee detail as input

printf("Enter 5 Employee Details \n \n");

for( i=0; i<5; i++)

printf("Employee %d:- \n",i+1);

//Name

printf("Name: ");

scanf("%s",emp[i].name);

//ID

printf("Id: ");

scanf("%d",&emp[i].id);

//Salary

printf("Salary: ");

scanf("%d",&emp[i].salary);

printf("\n");

//Displaying Employee details

printf("-------------- All Employees Details ---------------\n");

for(i=0; i<5; i++)

printf("Name \t: ");

printf("%s \n",emp[i].name);

printf("Id \t: ");

printf("%d \n",emp[i].id);

printf("Salary \t: ");

printf("\n");

getch();

return 0;

26 Practical No. 21

Title: Program to determine whether a string is a palindrome */

#include <stdio.h>

#include <conio.h>

#include <string.h>

void main()

int ch;

char str1[15], str2[15];

clrscr();

printf("Enter a string: ");

gets (str1);

strcpy(str2,str1); /* copy a original string*/

strrev(str2); /* Reverse a string */

ch = strcmp (str1, str2);

if ( ch == 0) /*check if palindrome */

printf("%s is a palindrome string,str1);

else

printf("%s is not a palindrome string,str2);

}
getch();

/* Output:-

Enter a string: ICICI

ICICI is a Palinidrome String

Enter a string: Pyramid

Pyramid is not a Palinidrome String

*/

27 /*Practical No.22.1

/*Program to find factorial of given number using Recursion*/

#include <stdio.h>

#include <conio.h>

/*Recursive Function definition to find factorial of number*/

long factorial(int no)

{ long fact;

if(no == 1)

{ return(1); }

else

fact=no*factorial(no-1);

return(fact);

}}

/*Main program*/
void main()

{ int num;

long f;

clrscr();

printf("Enter an integer: ");

scanf("%d",&num);

f=factorial(num);

printf("Factorial of %d = %ld ",num,f);

getch();

28 /*Practical No.22.2

Program to find GCD of two numbers using function*/

#include <stdio.h>

#include <conio.h>

/*Function definition to find GCD of two numbers*/

int gcd(int no1, int no2)

int R, N, D;

if(no1 > no2)

N=no1;

D=no2;

if(no2 > no1)

N=no2;

D=no1;

R=N % D;
while(R != 0)

N=D;

D=R;

R=N % D;

return (D);

/*Main program*/

void main()

int num1,num2,g;

clrscr();

printf("Enter two integers: ");

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

g=gcd(num1,num2);

printf("GCD of %d and %d = %d",num1,num2,g);

getch();

/*Output

Enter two integers: 75 25

GCD of 75 and 25 = 25

Enter two integers: 75 25

GCD of 75 and 25 = 25

Enter two integers: 50 8

GCD of 50 and 8 = 2 */

29/*Practical No.24 Title: Program to print values of variables and their addresses */

#include <stdio.h>

#include <conio.h>
void main()

int x,y;

int *px, *py; /*Pointer variables*/

clrscr();

printf("Enter value of x and x variables: ");

scanf("%d %d",&x,&y);

/*Print values and addresses of variable*/

printf("\nValues of variables: x=%d y=%d\n",x,y);

printf("Address of varibales: &x=%X &y=%X\n",&x,&y);

px=&x; /*Initialize pointer to x*/

py=&y; /*Initialize pointer to x*/

/*Print values and addresses of variable in terms of pointers*/

printf("\nValues and addresses of variable in terms of pointers:\n");

printf("\nValues of variables: *px=%d *py=%d\n",*px,*py);

printf("Address of varibales: px=%X py=%X\n",px,py);

getch();

return(0);

/*Output

Enter value of x and x variables: 43 56

Values of variables: x=43 y=56

Address of varibales: &x=FFF4 &y=FFF2

Values and addresses of variable in terms of pointers:

Values of variables: *px=43 *py=56

Address of varibales: px=FFF4 py=FFF2

*/

30/*Practical No.25
Title: Implement a ‘C’ Program to perform arithmetic operations using pointer. */

#include<stdio.h>

int main()

int number;

//pointer to int

int *p,*p1,*p2;

clrscr();

//stores the address of number variable

p=&number;

printf("Address of p variable is %u \n",p);

//adding 3 to pointer variable

p1=p+3;

printf("After adding 3 The address of p variable is %u \n",p1);

//subtracting 3 from pointer variable

p2=p-3;

printf("After subtracting 3 The Address of p variable is %u \n",p2);

getch();

Output

Address of p variable is

65524

After adding 3 The Address of p variable is After 65530

After subtracting 3 The Address of p variable is 65518

Title: Program to perform basic arithmetic operations*/

#include <stdio.h>

#include <conio.h>

void main()

int no1,no2,result;

clrscr();
printf("Enter two integers: ");

scanf("%d %d",&no1,&no2);

result = no1 + no2;

printf("Sum = %d”,result);

result = no1 - no2;

printf("\nDifference = %d”,result);

result = no1 * no2;

printf("\nProduct = %d”,result);

result = no1 / no2;

printf("\nDivision = %d”,result);

getch();

32

Title: Program to check the number is ODD or EVEN */

#include <stdio.h>

int main()

int num;

printf("Enter an integer: ");

scanf("%d", &num);

// true if num is perfectly divisible by 2

if(num % 2 == 0)

printf("%d is even.", num);

else

printf("%d is odd.", num);

return 0;
}

/*Output */

Enter an integer: -7

-7 is odd.

33

/* Using Logical Operator

Title: Program to check whether a triangle is Equilateral, Isosceles or Scalene */

#include <stdio.h>

#include <conio.h>

int main()

int side1, side2, side3;

clrscr();

/* Accept 3 sides of a triangle */

printf("Enter 3 sides of triangle: ");

scanf("%d %d %d", &side1, &side2, &side3);

/*If 3 sides are equal*/

if(side1==side2 && side2==side3)

printf("Equilateral triangle.");

/* If any two sides are equal */

else if(side1==side2 || side1==side3 || side2==side3)

printf("Isosceles triangle.");

else
{

/* If none sides are equal */

printf("Scalene triangle.");

getch();

return 0;

/*Output:

Enter 3 sides of triangle: 12 24 17

Scalene triangle.

Enter 3 sides of triangle: 33 33 60

Isosceles triangle.

Enter 3 sides of triangle: 52 52 52

Equilateral triangle.

*/

34

/* Logical Operator

Title:-Program to find if given character is vowel or not.*/

#include<stdio.h>

#include<conio.h>

#include <ctype.h>

void main()

char ch1,ch2;

clrscr();

printf("Enter a letter: ");

scanf("%c",&ch1);

ch2=tolower(ch1); /*convert letter to lower case*/

if(ch2=='a' || ch2=='e' || ch2=='i' || ch2=='o' || ch2=='u')

printf("%c is a vowel",ch1);

else

printf("%c is not a vowel",ch1);

getch();

/*

Output:-

Enter a letter: K

K is not a vowel

Enter a letter: u

u is a vowel

35

/*

Title :- Program using simple if statement. */

#include<stdio.h>

main( )

int num;

printf(“Enter a number:”);

scanf(“%d”, &num);

if(num < = 10)

printf(“The number is less than 10”);

/*Output*/

Sample output of this program will be:

Enter a number: 7

The number is less than 10

Enter a number: 15

36

/*

Title :- Program using if..else statement.*/

#include<stdio.h>

main( )

{ int y;

printf(“Enter year : “); scanf(“%d”, &y);

if(y > 2000)

{ printf(“\n Number is greater than 2000”);

if(y % 4 == 0)

{ printf(“\n This is leap year”);

else

printf(“\n This is not leap year”);

else

{printf(“\n Number is less than 2000);

if(y % 4 ==0)

printf(“\n This is leap year”);

}
else

printf(“\n This is not leap year”);

/* Output: */

Enter year: 1988

Number is less than 2000

This is leap year

37

Title: Program to print Grade of students by accepting percentage marks*/

#include<stdio.h>

#include <conio.h>

void main()

int score;

clrscr();

printf("Enter percentage marks( 0-100 ): ");

scanf("%d",&score);

switch( score / 10 )

case 10:

case 9:

printf("Grade: A+\n");

break;

case 8:

printf("Grade: A\n");

break;

case 7: printf("Grade: B+\n");

break;

case 6:
printf("Grade: B\n");

break;

case 5:

printf("Grade: C+\n");

break;

case 4:

printf("Grade: C\n");

break;

default:

printf("Grade: Fail\n");

break;

getch();

/*Output:

Enter percentage marks( 0-100 ): 67

Grade: B

Enter percentage marks( 0-100 ): 95

Grade: A+ */

38

/*for loop

Title: Program to print numbers 1 to 100 */

#include <stdio.h>

#include <conio.h>

void main()

int i;

for(i=1;i<=100;i++)

printf(“%d\t”,i);
getch();

39

/*Program to add two distances in kilometer and meter using structure*/

#include <stdio.h>

#include <conio.h>

void main()

{ /*Define a structure Type*/

struct distance{

int km;

int m;

} d1,d2,total; /*structure variables */

int kilometer, meters ; /* Normal variables */

clrscr();

printf("Enter Distance-1 in km & m: ");

scanf("%d %d",&d1.km,&d1.m); /*Accept Distance-1*/

printf("\nEnter Distance-2 in km & m: ");

scanf("%d %d",&d2.km,&d2.m); /*Accept Distance-2*/

meters = d1.m + d2.m ; /*Add meters */

total.m = meters % 1000; /*Extract total meters from two distance*/

kilometer = meters / 1000; /*Extract kilometers from two distances*/

total.km=d1.km+d2.km + kilometer; /*find Total kilometers*/

printf("\nTotal Distance = %d km %d m",total.km,total.m);

getch();

/*Output

Enter Distance-1 in km & m: 2 800

Total Distance=6 km 200 m

40

/* Title:-Program to demonstrate use of string functions*/

#include<stdio.h>

#include<conio.h>

#include <string.h>

void main()

char str1[25],str2[25],str3[50];

int len, ch;

clrscr();

printf("Enter String-1: ");

gets(str1);

len=strlen(str1); //find string length of string-1*/

printf("String length of string-1 = %d", len);

printf("\n\nEnter String-2: ");

gets(str2);

len=strlen(str2); /*find string length of string-2*/

printf("String length of string-2 = %d", len);

ch=strcmp(str1,str2); /*compare two strings*/

if(ch==0) /*check if two strings are same or different*/

printf("\n\nString-1 & String-2 are same...");

else

printf("\n\n String-1 & String-2 are different...");

printf("\n\nCopy string-1 to string-3....");

strcpy(str3,str1); /*copy string-1 to string-3*/

printf("\nString-1 : %s String-3 : %s",str1,str3);

strcat(str3,str2); /*concatenate two strings*/

printf("\nString-1: %s String-2: %s Concatenated string-3: %s", str1, str2,

str3);

printf("\n\nString-3: %s", str3);

strrev(str3); /*Revrse string-3*/

printf("\nReverse String-3: %s", str3);

getch();

/*Output:

Enter String-1: Nashik

String length of string-1 = 6

Enter String-2: road

String length of string-2 = 4

String-1 & String-2 are same...

Copy string-1 to string-3....

String-1 : Nashik String-3 : Nashik

Concatenate string-1 & string-2.....

String-1: Nashik String-2: road Concatenated string-3: Nashikroad

String-3: Nashikroad

Reverse String-3: daorkihsaN */

41

/* Title:-Program to demonstrate use of mathematical functions*/

#include<stdio.h>

#include<conio.h>

#include <math.h>

void main()
{

float no, result;

int num;

clrscr();

printf("Enter float number: ");

scanf("%f",&no);

result=sqrt(no); /*find square root of no */

printf("\nSquare Root of %.2f = %.2f",no,result);

result=pow(no,3); /*find cube of no */

printf("\n\nCube of %.2f = %.2f",no,result);

num=floor(no); /*Round to previous integer*/

printf("\n\nFloor value of %.2f = %d", no, num);

num=ceil(no); /*Round to next integer*/

printf("\n\nCeil value of %.2f = %d", no, num);

result=sin(no); /*find sine of angle no */

printf("\n\nSine of %.2f = %.2f",no,result);

getch();

/*Output:

Enter float number: 25.34

Square Root of 25.34 = 5.03

Cube of 25.34 = 16271.21

Floor value of 25.34 = 25

Ceil value of 25.34 = 26

Sine of 25.34 = 0.21

*/
42

/*Program to find factorial of given number using Recursion*/

#include <stdio.h>

#include <conio.h>

/*Recursive Function definition to find factorial of number*/

long factorial(int no)

{ long fact;

if(no == 1)

{ return(1); }

else

fact=no*factorial(no-1);

return(fact);

}}

/*Main program*/

void main()

{ int num;

long f;

clrscr();

printf("Enter an integer: ");

scanf("%d",&num);

f=factorial(num);

printf("Factorial of %d = %ld ",num,f);

getch();

/* Output

Enter an integer: 6

Factorial of 6 = 720

Enter an integer: 9
Factorial of 6 = 362880 */