C++ 静态数据成员

#ifndefStaticTest_MyClass_h
#defineStaticTest_MyClass_h
classCMyClass
{
public:
staticintnum;//静态数据成员
CMyClass();
~CMyClass();
};
#endif

#include"MyClass.h"
intCMyClass::num=5;//初始化
CMyClass::CMyClass()
{

}
CMyClass::~CMyClass()
{

}

#include<iostream>
usingnamespacestd;
#include"MyClass.h"
intmain(intargc,constchar*argv[])
{

//insertcodehere...
std::cout<<CMyClass::num<<"\n";
CMyClass*me=newCMyClass;
std::cout<<me->num<<"\n";
me->num=100;
std::cout<<CMyClass::num<<"\n";
return0;
}