阅读下列程序，写出运行结果：
#include <iostream>
using namespace std;
int main()
{
int x,y,z,f;
x = y = z = 1;
f = --x || y-- && z++;
cout << "x = " << x << endl;
cout << "y = " << y << endl;
cout << "z = " << z << endl;
cout << "f = " << f << endl;
} 
林呼
