Answer Posted / ankit

#include<stdio.h>
void swap(int *,int *);
void main()
{
int a,b;
clrscr();
printf("enter two numbers");
scanf("%d%d",&a,&b);
swap(&a,&b);
/* b=(a+b)-(a=b); 1st method */
/* 2nd method
a=a+b;
b=a-b;
a=a-b; */
/* 3rd Method
a=a*b;
b=b/a;
a=a/b; */
/*4th Method
a=a^b;
b=b^a;
a=a^b; */
/* 5th Method
using pointer*/
printf("a=%d\nb=%d",a,b);
getch();
}
void swap(int *a,int *b)
{
*a=*a+*b;
*b=*a-*b;
*a=*a-*b;
}

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