C++ 構造函數，析構函數，全局變量

#include <fstream>

using namespace std;

ofstream out("statdest.txt");

class Obj
{
    char c;
public:
    Obj(char cc) : c(cc) {out<<"Obj::Obj() for "<<c<<endl;}
    ~Obj(){out<<"Obj::~Obj for "<<c<<endl;}
};

Obj a('a'); //全局對象

void f()
{
    static Obj b('b');  //靜態類型
}

void g()
{
    static Obj c('c');
}

int main()
{
    out<<"inside main()"<<endl;
    f();
    g();
    out<<"leaving main()"<<endl;

    return 0;
}

/*
運行結果:
Obj::Obj() for a
inside main()
Obj::Obj() for b
Obj::Obj() for c
leaving main()
Obj::~Obj for c
Obj::~Obj for b
Obj::~Obj for a
*/