?? ch15_4.cpp
字號:
//**********************
//** ch15_4.cpp **
//**********************
#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)
{
strncpy(name,pName,sizeof(name));
name[sizeof(name)-1] ='\0';
pNext =pFirst; //每新建一個結點(對象),就將其掛在鏈首
pFirst =this;
}
Student::~Student()
{
cout <<this->name <<endl;
if(pFirst==this){ //如果要刪除鏈首結點,則只要鏈首指針指向下一個
pFirst=pNext;
return;
}
for(Student* pS=pFirst; pS; pS=pS->pNext)
if(pS->pNext==this){ //找到時,pS指向當前結點的結點
pS->pNext=pNext; //pNext即this->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;
}
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