학생 성적 관리 시스템 C++구현 코드

*          
*/

# include <iostream>
# include <fstream>
# include <string.h>
#include <conio.h>// getch();
using namespace std;
 
//kkkkkkkkkkStudent kkkkkkkkkkk
class Student
{
public:
 char name[20];
 char Id[20];
 int Cnum;  //C++    
 int Mnum;  //      
 int Enum;  //           
 int sum;  //    
 Student * Next;
 void Input()
 {
 cout<<"\t\t        ："; cin>>name;
 cout<<"\t\t        ："; cin>>Id;
 cout<<"\t\t   C++     ："; cin>>Cnum;
 cout<<"\t\t          ："; cin>>Mnum;
 cout<<"\t\t               ："; cin>>Enum;
 sum=Cnum+Mnum+Enum;
 }
 void ReadFile(istream & in)
 {
 in>>name>>Id>>Cnum>>Mnum>>Enum>>sum;
 }
 void Show()
 {
 cout<<"  :"<<name<<endl<<"  :"<<Id<<endl<<"C++:"<<Cnum<<endl
 <<"  :"<<Mnum<<endl<<"       ："<<Enum<<endl<<"   :"<<sum<<endl<<endl<<endl;
 }
};
 
//kkkkkkkkkStudentmassage kkkkkkkkkkkk
class Studentmassage
{
public:
 Studentmassage();
 ~Studentmassage();
 void ShowMenu();
 void Find();
 void Save();
 void ModifyItem();
 void RemoveItem();
 void Swap(Student *,Student *);
 void Sort();
 //void Unpass();
 int ListCount();
 //void Average();
 void Display()
 {
 for(Student * p=Head->Next;p!=End;p=p->Next)
 p->Show();
 cout<<"      ！  ……";
 getch();
 }
 void AddItem()
 {
 End->Input();
 End->Next=new Student;
 End=End->Next;
 cout<<"    !"<<endl;
 cout<<"      ！  ……";
 getch();
 }
private:
 Student * Head,* End;
 ifstream in;
 ofstream out;
 Student *FindItem(char * name)
 {
 for(Student * p=Head;p->Next!=End;p=p->Next)//            ，       
 if(!strcmp(p->Next->name,name))return p;
 return NULL;
 }
 Student *FindID(char * Id)
 {
 for(Student * p=Head;p->Next!=End;p=p->Next)//            ，       
 if(!strcmp(p->Next->Id,Id))return p;
 return NULL;
 }
};
 
//kkkkkkkkkkkk    kkkkkkkkkkkk
Studentmassage::Studentmassage()
{
 Head=new Student;
 Head->Next=new Student;
 End=Head->Next;
 in.open("sort.txt");
 if(!in)
 cout<<"       ，     。    。"<<endl;
 else
 {
 while(!in.eof())
 {
 End->ReadFile(in);
 if(End->name[0]=='\0')break;
 End->Next=new Student;
 End=End->Next;
 }
 in.close();
 cout<<"\t\t        !"<<endl;
 }
}
 
//kkkkkkkkkkkk    kkkkkkkkkkkk
Studentmassage::~Studentmassage()
{
 Save();
 for(Student * temp;Head->Next!=End;)
 {
 temp=Head->Next;
 Head->Next=Head->Next->Next;
 delete temp;
 }
 delete Head,End;
}
 
//kkkkkkkkkkkk  kkkkkkkkkkkk
void Studentmassage::ShowMenu()     
{
 cout<<"********************************************************************************"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓〓 ☆                  ☆ 〓〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓★★★★★   ★★★★★★★   ★★★★★〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   1.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   2.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   3.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   4.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   5.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   6.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 cout<<"〓〓〓〓〓〓〓〓〓★ ☆   0.        ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
 
 cout<<"
\t\t
\t\t   ：";
}
 
//kkkkkkkkkkkk    kkkkkkkkkkkk
void Studentmassage::Find()
{
 char name[20] ,Id[10];
 int x;
 Student * p=NULL;
 cout<<"
\t\t*********************************
";
 cout<<"\t\t※ 1.        
\t\t※ 2.       ";
 cout<<"
\t\t*********************************
   ：";
 cin>>x;
 switch(x)
 {
 case 1:{cout<<"\t\t            ：";cin>>name;
 if(p=FindItem(name))
 {
 p->Next->Show();
 cout<<"      ！  ……";
 getch();
 }
 else
 {
 cout<<"\t\t          ！"<<'
'<<endl;
 cout<<"      ！  ……";
 getch();
 }
  }break;
 case 2:
 {
 cout<<"\t\t            ：";cin>>Id;
 if(p=FindID(Id))
 {
 p->Next->Show();
 cout<<"      ！  ……";
 getch();
 }
 else
 {
 cout<<"\t\t          ！"<<'
'<<endl;
 cout<<"      ！  ……";
 getch();
 }
 }break;
 }
 
}
 
//kkkkkkkkkkkk    kkkkkkkkkkkk
void Studentmassage::ModifyItem()  //    
{
 char name[20];
 Student * p=NULL;
 cout<<"\t\t           :";cin>>name;
 if(p=FindItem(name))
 {
 cout<<"\t\t        ，       !"<<endl;
 p->Next->Input();
 cout<<"    ！"<<endl;
 cout<<"      ！  ……";
 getch();
 }
 else
 {
 cout<<"\t\t    !"<<endl;
 cout<<"      ！  ……";
 getch();
 }
}
 
//kkkkkkkkkkkk    kkkkkkkkkkkk
void Studentmassage::RemoveItem()   //     
{
 char name[20];
 Student * p=NULL,*temp=NULL;
 cout<<"\t\t            :"<<endl;cin>>name;
 if(p=FindItem(name))
 {
 temp=p->Next;
 p->Next=p->Next->Next; 
 delete temp;
 cout<<"\t\t    !"<<endl;
 cout<<"      ！  ……";
 getch();
 }
 else
 {
 cout<<"\t\t    !"<<endl;
  cout<<"      ！  ……";
 getch();
 }
}
 
//kkkkkkkkkkkkkkkkkkkkkkkk
void Studentmassage::Swap(Student *p1, Student *p2)//    combox      
{
 Student *temp=new Student; 
 strcpy(temp->name,p1->name);
 strcpy(temp->Id,p1->Id);
 temp->Cnum=p1->Cnum;
 temp->Mnum=p1->Mnum;
 temp->Enum=p1->Enum;
 temp->sum=p1->sum;
 
 strcpy(p1->name,p2->name);
 strcpy(p1->Id,p2->Id);
 p1->Cnum=p2->Cnum;
 p1->Mnum=p2->Mnum;
 p1->Enum=p2->Enum;
 p1->sum=p2->sum;
 
 strcpy(p2->name,temp->name);
 strcpy(p2->Id,temp->Id);
 p2->Cnum=temp->Cnum;
 p2->Mnum=temp->Mnum;
 p2->Enum=temp->Enum;
 p2->sum=temp->sum;
}
 
//kkkkkkkkkkkkkkkkkkkkkkkk
int Studentmassage::ListCount()//           ，      
{
 if(! Head)
 return 0;
 int n=0;
 for(Student * p=Head->Next;p!=End;p=p->Next)
 {
 n++;
 }
 return n;
}
 
//kkkkkkkkkkkkkkkkkkkkkkkk
void Studentmassage::Sort()//         
{ 
 cout <<"Sorting..."<<endl;
 Student *p=NULL,*p1=NULL,*k=NULL;
 int n=Studentmassage::ListCount();
 if(n<2) 
 return;
 for(p=Head->Next;p!=End;p=p->Next)
 for(k=p->Next;k!=End;k=k->Next)
 {
 if(p->sum>k->sum)
 {
 Studentmassage::Swap(p,k);
 }
 }
 cout <<"    ！"<<endl;
 getch();
 return;
}
 
//kkkkkkkkkkk    kkkkkkkkkkkkk
void Studentmassage::Save()
{
 out.open("sort.txt");
 for(Student *p=Head->Next;p!=End;p=p->Next)
 out<<p->name<<"\t"<<p->Id<<"\t"<<p->Cnum<<"\t"
 <<p->Mnum<<"\t"<<p->Enum<<"\t"<<p->sum<<'
';
 out.close();
}
 
//kkkkkkkkkkkk   kkkkkkkkkkkk
int main()
{
 int x,i=0;
 bool quit=false;
 cout<<"\t\t§§§§§§§§§§§§§§§§§§§§§§§§§§"<<endl;
 for(i=0;i<3;i++)
 cout<<"\t\t◎\t\t\t\t\t\t ◎"<<endl;
 cout<<"\t\t◎★★★★【              】★★★★◎"<<endl;
 for(i=0;i<3;i++)
 cout<<"\t\t◎\t\t\t\t\t\t ◎"<<endl;
 cout<<"\t\t§§§§§§§§§§§§§§§§§§§§§§§§§§
"<<endl;;
 Studentmassage Grade;
 cout<<"      ……";
 getch();
 while(!quit)
 {
 system("cls");
 Grade.ShowMenu();
 cin>>x;
 switch(x)
 {
 case 0:quit=true;break;
 case 1:Grade.AddItem();break;
 case 2:Grade.Display();break;
 case 3:Grade.Sort();break;
 case 4:Grade.Find();break;
 case 5:Grade.RemoveItem();break;
 case 6:Grade.ModifyItem();break;
 }
 }
 return 0;
}