main.cpp

来自「C++ Source code from a tutorial」· C++ 代码 · 共 34 行

#include <iostream>
#include <stdlib.h>
#include <string>

using namespace std;

class Planet {
private:
    static Planet *inst;
    Planet(string name) { 
        cout << "Welcome to " << name << endl;
    }
    ~Planet() {}
public:
    static Planet *GetInstance(string name);
};

Planet *Planet::inst = 0;

Planet *Planet::GetInstance(string name) {
    if (inst == 0) {
        inst = new Planet(name);
    }
    return inst;
}

int main(int argc, char *argv[])
{
    Planet *MyPlanet = Planet::GetInstance("Earth");
    Planet *MyPlanet2 = Planet::GetInstance("Venus");
    system("PAUSE");	
    return 0;
}