#include <stdio.h>
#include <stdlib.h>

// This code does not work. You can't swap values inside a function and
// propagate the result back to the calling function without using pointers.

void swap(int a, int b)
{
	printf("\t[swap] Before a=%d, b=%d \n", a, b);
	int temp;
	
	temp=b;
	b=a;
	a=temp;
	
    printf("\t[swap] After  a=%d, b=%d \n", a, b);
}

int main()
{
	int a=5;
	int b=8;
	
    printf("[main] Before a=%d, b=%d \n", a, b);	
    
	swap(a, b);
    
	printf("[main] After  a=%d, b=%d \n", a, b);
	
	system("pause");
}