Programming In C, 3rd Edition

Input and Output in C 99

clrscr();

printf(“Enter any character :”);

scanf(“%c”,&ch);

printf(“\n Your Entered Character is : %c”,ch);

}

OUTPUT:

Enter any character: C

Your Entered Character is: C

Explanation:

In the above program, a character is entered and stored in variable ch. The printf() statement

displays the entered character.

4.18 Write a program to swap the values of two variables without the use third variable.

void main()

{

int a=7,b=4;

clrscr();

printf(“\n A= %d B= %d”,a,b);

a=a+b;

b=a-b;

a=a-b;

printf(“Now A= %d B= %d”,a,b);

}

OUTPUT:

A=7 B=4

Now A= 4 B=7

Explanation:

In the above program, no third variable is used as