#include <stdio.h>
 
void swap_pointer(int *pp[]);
 
int main(void)
{
	int a = 1;
	int b = 2;
 
	int *p[2] = {&a, &b};
 
	int size = sizeof(p) / sizeof(p[0]);
 
	for(int i=0; i<size; i++){
		printf("before : p[%d] : %p\n", i, p[i] );
	}
 
	swap_pointer( p );
 
	for(int i=0; i<size; i++){
		printf("after  : p[%d] : %p\n", i, p[i] );
	}
 
	return 0;
}
 
void swap_pointer(int *pp[])
{
	int *temp;
 
	temp  = pp[0];
	pp[0] = pp[1];
	pp[1] = temp;
 
}

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