#include <iostream>// 交换位置//  “值调用”void swap_value(int x, int y) {    int temp = x;    x = y;    y = temp;}// “引用调用1”，形参：传的是地址，取得是值(*)void swap_p(int *x, int *y) {    int temp = *x;    *x = *y;    *y = temp;}// “引用调用2”，形参：传的是值，接的是地址void swap_addr(int &a, int &b) {    int temp = a;    a = b;    b = temp;}main() {    int x = 0;    int y = 1;    printf("x = %d, y = %d\n", x, y);    swap_value(x, y);    printf("传值调用后：x = %d, y = %d\n", x, y);    swap_p(&x, &y);    printf("传地址调用后：x = %d, y = %d\n", x, y);    swap_addr(x, y);    printf("传值接地址调用后：x = %d, y = %d\n", x, y);}

x = 0, y = 1传值调用后：x = 0, y = 1传地址调用后：x = 1, y = 0传值接地址调用后：x = 0, y = 1