c_cpp 非静态mem函数中的static

Posted 2021-05-14

#include <iostream>


class Foo
{
private:
   long i;
public:
   Foo(): i(3)
   {}
   ~Foo(){}
   
   void inc(void)
   {
     static int num = 3;
     num++;
     i += num;
   }
   
   void print(void)
   {
     std::cout << i << std::endl;
   }
};

int main() {
  Foo f;
  f.inc();
  f.inc();
  f.print();
}