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


void inverse_variables(int a, int b) {
	int temp;
	temp = a;
	a = &b;
	b = &temp;
}
 

int main(void) {
    int x, y;
    x = 12;
    y = 5;
    printf("avant : x = %d   y = %d\n", x, y);
    inverse_variables(x, y);
    printf("avant : x = %d   y = %d\n", x, y);
    return EXIT_SUCCESS;
}