// Demonstrates parameter passing in C
// Compile: gcc -o swaptest swaptest.c
// Execute: swaptest
//
#include <stdio.h>
int main(int argc, char *argv[])
{
    // params are pass by value
    void swap(int x, int y)
    {
        int t = x;   
        x = y;
        y = t;
    }

    printf("swaptest1.c, by value");    

    int a = 1;
    int b = 2;

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

    swap(a, b);

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