Answer Posted / gaurav sharma

#include<conio.h>
#include<stdio.h>
void main()
{
clrscr();
int a,b;
printf("enter the value of a : ");
scanf("%d",&a);
printf("enter the value of b : ");
scanf("%d",&b);
printf("Before swapping a is %d and b is %d",a,b);
a=a+b;
b=a-b;
a=a-b;
printf("\nAfter swapping of a and b:\na=%d\nb=%d",a,b);
getch();
}

int main() { Int n=20,i; For(i=0;i<=n;i--) { Printf(“-“); Return 0;

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