global_reach.cpp

来自「the source of dev_c++ most of them for 」· C++ 代码 · 共 45 行

// Global Reach
// Demonstrates global variables

#include <iostream>

using namespace std;

int glob = 10;  // global variable

void access_global();
void hide_global();
void change_global();

int main()
{
    cout << "In main() glob is: " << glob << "\n\n";
    access_global();
    
    hide_global();
    cout << "In main() glob is: " << glob << "\n\n";

    change_global();
    cout << "In main() glob is: " << glob << "\n\n";

    return 0;
}

void access_global()
{
    cout << "In access_global() glob is: " << glob << "\n\n";
}

void hide_global()
{
    int glob = 0;  // hide global variable glob
    cout << "In hide_global() glob is: " << glob << "\n\n";
}

void change_global()
{
    glob = -10;  // change global variable glob
    cout << "In change_global() glob is: " << glob << "\n\n";
}