#include <stdio.h>
void swap(int *x,int *y);
int main ()
{
int m,n;
scanf("%d%d",&m,&n);
printf("before swap:m=%d n=%d\n",m,n);
the swap ( & m, & n-); // Note reference to the function, the first two values address character.
printf("after swap:m=%d n=%d\n",m,n);
return 0;
}
void swap(int *x,int *y)
{
int temp;
temp=*x;
* X = * y;
*y=temp;
}