# include
# include
# include
#include
using namespace std;
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌Student类﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
class Student
{
public:
char name[20];
char Id[20];
int Cnum; //C++课程得分
int Mnum; //汇编课程得分
int Enum; //嵌入式操作系统课程得分
int sum; //总分
Student * Next;
void Input()
{
cout<<"\t\t请输入学生的姓名:"; cin>>name;
cout<<"\t\t请输入学生的学号:"; cin>>Id;
cout<<"\t\t请输入C++课程的成绩:"; cin>>Cnum;
cout<<"\t\t请输入汇编课程的成绩:"; cin>>Mnum;
cout<<"\t\t请输入嵌入式操作系统课程的成绩:"; cin>>Enum;
sum=Cnum+Mnum+Enum;
}
void ReadFile(istream & in)
{
in>>name>>Id>>Cnum>>Mnum>>Enum>>sum;
}
void Show()
{
cout<<"姓名:"<
};
//﹌﹌﹌﹌﹌﹌﹌﹌﹌Studentmassage类﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
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<<"输入任意字符!继续……";
getch();
}
void AddItem()
{
End->Input();
End->Next=new Student;
End=End->Next;
cout<<"添加成功!"<
getch();
}
private:
Student * Head,* End;
ifstream in;
ofstream out;
Student *FindItem(char * name)
{
for(Student * p=Head;p->Next!=End;p=p->Next)//匹配成功则返回上一个指针,不成功就返回空
if(!strcmp(p->Next->name,name))return p;
return NULL;
}
Student *FindID(char * Id)
{
for(Student * p=Head;p->Next!=End;p=p->Next)//匹配成功则返回上一个指针,不成功就返回空
if(!strcmp(p->Next->Id,Id))return p;
return NULL;
}
};
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌构造函数﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
Studentmassage::Studentmassage()
{
Head=new Student;
Head->Next=new Student;
End=Head->Next;
in.open("sort.txt");
if(!in)
cout<<"这是一个新系统,无学生信息。请先输入。"<
{
while(!in.eof())
{
End->ReadFile(in);
if(End->name[0]=='\0')break;
End->Next=new Student;
End=End->Next;
}
in.close();
cout<<"\t\t读取学生信息成功!"<
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌析构函数﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
Studentmassage::~Studentmassage()
{
Save();
for(Student * temp;Head->Next!=End;)
{
temp=Head->Next;
Head->Next=Head->Next->Next;
delete temp;
}
delete Head,End;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌菜单﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::ShowMenu()
{
cout<<"********************************************************************************"<
cout<<"\n\t\t\n\t\t请选择:";
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌查找函数﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Find()
{
char name[20] ,Id[10];
int x;
Student * p=NULL;
cout<<"\n\t\t*********************************\n";
cout<<"\t\t※ 1.按学生的姓名查找\n\t\t※ 2.按学生学号查找";
cout<<"\n\t\t*********************************\n请选择:";
cin>>x;
switch(x)
{
case 1:{cout<<"\t\t请输入要查找的学生的姓名:";cin>>name;
if(p=FindItem(name))
{
p->Next->Show();
cout<<"输入任意字符!继续……";
getch();
}
else
{
cout<<"\t\t没有找到该姓名的学生!"<<'\n'<
getch();
}
}break;
case 2:
{
cout<<"\t\t请输入要查找的学生的学号:";cin>>Id;
if(p=FindID(Id))
{
p->Next->Show();
cout<<"输入任意字符!继续……";
getch();
}
else
{
cout<<"\t\t没有找到该学好的学生!"<<'\n'<
getch();
}
}break;
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌修改信息﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::ModifyItem() //修改信息
{
char name[20];
Student * p=NULL;
cout<<"\t\t请输入要修改的人的姓名:";cin>>name;
if(p=FindItem(name))
{
cout<<"\t\t已找到学生的信息,请输入新的信息!"<
cout<<"修改成功!"<
getch();
}
else
{
cout<<"\t\t没有找到!"<
getch();
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌删除信息﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::RemoveItem() // 删除信息
{
char name[20];
Student * p=NULL,*temp=NULL;
cout<<"\t\t请输入要删除的学生的姓名:"<
if(p=FindItem(name))
{
temp=p->Next;
p->Next=p->Next->Next;
delete temp;
cout<<"\t\t删除成功!"<
getch();
}
else
{
cout<<"\t\t没有找到!"<
getch();
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Swap(Student *p1, Student *p2)//交换两个combox变量的数据域
{
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;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
int Studentmassage::ListCount()//统计当前链表的记录总数,返回一个整数
{
if(! Head)
return 0;
int n=0;
for(Student * p=Head->Next;p!=End;p=p->Next)
{
n++;
}
return n;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Sort()//对当前链表进行排序
{
cout <<"Sorting..."<
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 <<"排序完成!"<
return;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌保存函数﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Save()
{
out.open("sort.txt");
for(Student *p=Head->Next;p!=End;p=p->Next)
out<
<
out.close();
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌主函数﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
int main()
{
int x,i=0;
bool quit=false;
cout<<"\t\t§§§§§§§§§§§§§§§§§§§§§§§§§§"<
cout<<"\t\t◎\t\t\t\t\t\t ◎"<
cout<<"\t\t◎\t\t\t\t\t\t ◎"<
cout<<"按任意键开始……";
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;
}