#include <iostream>

 #include <string>

 #include <cstdio>

 using namespace std; 

 class A{

     public:

         static int a;

         //static int a = 0; //编译不通过，无法在类内初始化

         int b;

         static void func1(){

             cout<<"static func"<<endl;

             a++;

             //b++;

         }

         void func2(){

             cout<<"normal func"<<endl;

             a++;

             b++;

         }

 }c;

 int A::a = ; //编译通过可以在类外初始化

 int main(int argc,char* argv[]){

     c.func1();

     c.func2();

     return ;

 }

static func

normal func