C 指针交换两个数

#include<stdio.h>void interchange(int * u, int * v);int main(void){int x = 5, y = 10;printf("Orginally x = %d and y = %d.\n",x,y);interchange(&x,&y);printf("Now x = %d and y = %d.\n",x,y);return 0;}void interchange(int * u, int * v){int temp;temp = *u;*u = *v;*v = temp;}