C++ 类的两种定义方式

class Teacher
{
private:
string _name;
int _age;
public:
Teacher()
{
printf("create techer \n");
}
Teacher(string name)
{
_name = name;
printf("create techer with name \n");
}

void SetName(string name)
{
_name = name;
}
string GetName()
{
return _name;
}
void Say()
{
string des = "I'm Teacher and my name is ";
des += _name;
cout<< des<< endl;
//printf(des);
}
};

namespaceDemo.h

namespace MyPrintSpace
{
void Say();
}

namespaceDemo.cpp
#include "namespaceDemo.h"
//为了调用带有命名空间的函数或变量，需要在前面加上命名空间的名称，
void MyPrintSpace::Say()
{
cout<<"MyPrintSpace say()"<<endl;
}