lab5_1.cpp

几个c++实验程序 对初学者很有帮助的

#include <iostream.h>

void fn1(); 
int x = 1, y = 2; 

int main()
{
	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 in 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;
}