4.cpp

一、教学目的： 能理解C++中运算符重载的需要性

#include<iostream.h>          
#include<string.h>

class Student
{
public:
      Student(char*pName);
	  ~Student();
protected:
	static Student* pFirst;
    Student* pNext;
	char name[40];
};
Student* Student::pFirst=0;
Student::Student(char*pName)
{
	  strcpy(name,pName);
	  name[sizeof(name)-1]='\0';
	  pNext=pFirst;
	  pFirst=this;
}
Student::~Student()
{
	  cout<<this->name<<endl;
	  if(pFirst==this)
	  {
		  pFirst=pNext;
		  return;
	  }
	  for(Student* pS=pFirst;pS;pS=pS->pNext)
		  if(pS->pNext==this)
		  {
			  pS->pNext=pNext;
			  return;
		  }
}
Student* fn()
{
	Student *pS=new Student("Jenny");
	Student sb("Jone");
	return pS;
}
void main()
{
	Student sa("Jamsa");
	Student* sb=fn();
	Student sc("Tracey");
	delete sb;
}