#include<stdio.h>

void zamien(int *a, int *b)
{
    int t;

    t = *a;
    *a = *b;
    *b = t;
}



int main()
{
    int a = 42;
    int b = 102;


    zamien(&a, &b);

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