Bigben

摘要： c++中静态变量不但要在头文件中declare，还要在实现的cpp中declare。当然也可以赋个初始值。class foo{ int _i; public: foo(int i) : _i(i) {}};class bar{ public: static int j; static foo f;};int bar::j = 0;foo bar::f(1); 阅读全文