gistfile1.h

#include <stdio.h>

void swap_pointers(int **, int **);

int main() {
	int i;
	int arr1[] = {1, 2, 3};
	int arr2[] = {9, 8, 7, 6};
	int *p1 = arr1;
	int *p2 = arr2;
	
	swap_pointers(&p1, &p2);
	
	for(i = 0; i < 4; ++i) {
		printf("%d ", p1[i]);
	}
	for(i = 0; i < 3; ++i) {
		printf("%d ", p2[i]);
	}
}
void swap_pointers(int **a, int **b) {
	int *t = *a;
	*a = *b;
	*b = t;
}