lab5_1.cpp

类的调用 类的调用 类的调用 类的调用

// lab5_1.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include "iostream"
using namespace std;

void fn1();    //函数原型声明
int x=1,y=2;    //定义全局变量

int _tmain(int argc, _TCHAR* argv[])
{   
	cout<<"Begin..."<<endl;
	cout<<"x="<<x<<endl;
    cout<<"y="<<y<<endl;
	cout<<"Evaluate x and y in main()..."<<endl;
	int x=10,y=20;
    cout<<"x="<<x<<endl;
    cout<<"y="<<y<<endl;
    cout<<"Step into fn1()..."<<endl;
    fn1();
	cout<<"Back into main"<<endl;
    cout<<"x="<<x<<endl;
    cout<<"y="<<y<<endl;
	return 0;
}

void fn1()
{
   int y=200;
   cout<<"x="<<x<<endl;
   cout<<"y="<<y<<endl;
}