Program to swap two numbers

Swapping means interchanging values of a and b, i.e, value of a in b and b in a.

# include<stdio.h>

void main()

{

int a, b, c;

printf("Enter values in a and b:");

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

c=a;

a=b;

b=c;

printf("a= %d\nb= %d",a,b);

}

EXPLANATION:-

a=10,b=20

c=a, value of a is assigned to c. So, c=10

a=b, value of b is assigned to a. So, a=20  

b=c, value of c is assigned to b. So, b=10

hence, a=20, b=10(Value assigned)