#include <stdio.h>

void swap(int*const a,int*const b)
{
    int temp = *a;
    *a=*b;
    *b=temp;
}

void display(int a, int b)
{
    printf("Values %d and %d\n", a, b);
}

int main(void)
{
    int x = 10;
    int y = 12;

    swap(&x,&y);

    display(x, y);
}