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#include <iostream>
#include <cstring>
using namespace std;
class Date{
friend class student;
private: int y, m, d;
public:
void assign(int y1, int m1, int d1){
y = y1;
if (m1 > 0 && m1 < 13) m = m1;
else m = 1;
d = d1;}
Date(int y1=1390){y = y1; m = 1; d = 1; }
Date(int y1, int m1){y = y1; m = m1; d = 1; }
void print (void);
};
void Date::print (){cout << y << '/' << m << '/' << d;}
//---------------------
// studentdent
//---------------------
class student {
int ID;
char name[20];
Date bd;
public:
void assign(int id1, char name1[], int y1, int m1, int d1){
ID = id1;
strcpy(name, name1);
bd.assign(y1, m1, d1);
bd.y = y1;
}
void print (){
cout << endl << "ID: " << ID << " name: " << name << " birthday: ";
bd.print();
}
student();
int getID(){return ID;}
};
//------------------------
student::student(){
ID = -1;
strcpy(name, "");
}
//--------------------
// Lessson Group
//--------------------
class Group {
student ourclass[50];
int stno;
public:
Group(){stno = 0;}
void Register();
void search();
void print();
void del();
};
//----------------
void Group::del()
{
cout << "plz enter stno : \n";
int x ;
cin >> x ;
for (int i = 0; i < stno; i++)
if (x == ourclass[i].???)
ourclass[i] = -1 ;
}
void Group::Register(){
if (stno > 49) {cout << "full!"; return;}
char n[20];
int year,month,day;
int id1;
cout << "\nplz enter your name :";
cin.ignore();
cin.getline( n, 100);
cout << "\nplz enter stno:";
cin >> id1;
cout << "enter bd :" << endl;
cout << "year :" ;
cin>>year;
cout << "month :" ;
cin>>month;
cout << "day :" ;
cin>>day;
ourclass[stno].assign(id1, n, year, month, day);
stno++;
}
void Group::search(){
cout<< "plz enter number : : \n" ;
int x; cin >> x;
for (int i = 0; i < stno; i++)
if (x == ourclass[i].getID())
ourclass[i].print();
}
void Group::print(){
for (int i = 0; i < stno; i++)
ourclass[i].print();
}
//------------------
int main(){
cout <<" plz enter number :" << endl ;
int a;
Group Object;
while(1){
cout << endl;
cout << "1. register . \n";
cout << "2. search . \n";
cout << "3. list .\n";
cout << "4. Delete \n" ;
cout << "5. Exit\n";
cin >> a;
switch(a){
case 1: Object.Register(); break;;
case 2: Object.search(); break;
case 3: Object.print(); break;
case 4: Object.del();
case 5: return 0;
}
}
cin.get();
}
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