自编---- 学生管理系统程序

#include<iostream>
#include<string>
using namespace std;
class Student
{
public:
      static int number;
      Student *build(int);
      
    friend void display(Student *head);
      Student *next;
      string name;
      float score;
private:
    
 
};
//数据链表
Student *build(int length)
{
   Student *hold,*temp,*head;
   int counter=1;
   head=new Student;
   hold=head;
   hold->next=NULL;
   do{
    cout<<"输入学生的姓名:"; cin>>hold->name;
    cout<<"输入学生的成绩:"; cin>>hold->score;
    counter++;
    temp=new Student;
    hold->next=temp;
    hold=temp;
}while(counter<=length);
hold->next=NULL;
return head;
}
//打印数据
 void display(Student*head)
{  Student *hold;
   hold=head;
   do{
     cout<<"姓名"<<'\t'<<"成绩"<<endl;
     cout<<hold->name<<'\t'<<hold->score<<endl;
     hold=hold->next;
     
     }while(hold!=NULL);
}
int main()
{ Student *head;
int length=3;
head=build(length);
display(head);
return 0;
}

 

输出里有个BUG 多输出了一个变量；