#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：
