C++语言之静态变量的运用

#include <iostream>using namespace  std ; class  Banana{public:static int id ; Banana(void){id++ ; cout << "this is a test: " << id << endl ; }};//类中的静态变量，必须在全局定义int Banana::id = 0 ; int main(void){Banana a  , b , c , d , e , f , g;return 0 ; }

运行结果：