传值调用

#include<iostream>using namespace std;void f(int x,int *y,int *z){  x = x*3;  *y = *y+x;  *z = *y+x;  cout<<"x="<<x<<", *y="<<*y<<", *z="<<*z<<endl; }void main(){ int a,b,c; a = b = c = 10; f(a,&b,&c); cout<<"a="<<a<<", b="<<b<<", c="<<c<<endl; }

b,c的地址被修改，因此在主程序中的值改变。