本题要求定义一个简单的学生类，数据成员仅需要定义学号和姓名，函数成员的原型见给出的代码，请给出函数成员的类外完整实现。函数接口定义：

1. 24. 6-49.自定义的学生类

   #include <iostream>
   #include <cstring>
   using namespace std;
   class  Student
   {
   private:
           int  m_id;
           char  m_name[10];
   public:
           Student(int  id=0,char  *name="");
           ~Student();
           void  print();
           
   };
   Student::Student(int  id,char  *name){
   	m_id=id;
   	strcpy(m_name,name);
   	if (strcmp(m_name,"")==0){
   	cout<<"Hi! "<<id<<" "<<"NULL"<<endl;
   	}
   	else{
   		cout<<"Hi! "<<id<<" "<<m_name<<endl;
   	}
   }
   Student::~Student(){
   	if(strcmp(m_name,"")==0){
   		cout<<"Bye! "<<m_id<<" "<<"NULL"<<endl;
   	}
   	else{
   		cout<<"Bye! "<<m_id<<" "<<m_name<<endl;
   	}
   }
   void Student::print(){
   	cout<<m_id<<" "<<m_name<<endl;
   }
   int  main()
   {
           Student  stu_array[3]={Student(1,"Zhang"),Student(2,"Wang")};
           return  0;
   }