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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. class SV{
  4.     private:
  5.         char msv[15],nganh[20];
  6.         string ten;
  7.         string xep;
  8.         int ng,th,nam;
  9.         float toan,van,tin,tong;
  10.     public:
  11.         void nhap(){
  12.             cout<<"Nhap ho ten: "; getline(cin,ten);
  13.             cout<<"Ma sinh vien: "; cin.getline(msv,15);
  14.             cout<<"Nganh hoc: "; cin.getline(nganh,20);
  15.             cout<<"Ngay sinh(date): "; cin >> ng >> th >> nam;
  16.             while(ng > 31){
  17.                 cout<<"Moi nhap lai ngay: "; cin>>ng;
  18.             }
  19.             while(th > 12){
  20.                 cout<<"Moi nhap lai thang: "; cin>>th;
  21.             }
  22.             while(nam > 2024){
  23.                 cout<<"Moi nhap lai nam: "; cin>>nam;
  24.             }
  25.             cout<<"Nhap diem toan: "; cin >> toan;
  26.             cout<<"Nhap diem van: "; cin >> van;
  27.             cout<<"Nhap diem tin: "; cin >> tin;
  28.             cin.ignore();
  29.             cout<<endl;
  30.  
  31.         }
  32.         void tinh(){
  33.             tong = (toan*4 + van*4 + tin*2)/10;
  34.             if(tong >= 9){
  35.                 xep = "Xuat sac";
  36.             }else
  37.                 if(tong >= 7.5){
  38.                     xep = "Gioi";
  39.                 }else
  40.                     if(tong >= 6){
  41.                         xep = "Kha";
  42.                    }else
  43.                     if(tong >= 4){
  44.                         xep = "Trung binh";
  45.                     }else
  46.                         if(tong < 4){
  47.                             xep = "Yeu";
  48.                         }
  49.  
  50.         }
  51.  
  52.         void xuat(){
  53.             cout<<setw(20)<<left<<ten
  54.             <<setw(15)<<left<<msv;
  55.             if(ng<10) cout<<"0"<<ng<<"/";
  56.                 else cout<<ng<<"/";
  57.             if(th < 10) cout<<"0"<<th<<"/";
  58.                 else cout<<nam<<"/";
  59.             cout<<setw(10)<<left<<nam
  60.             <<setw(10)<<left<<nganh
  61.             <<setw(13)<<left<<tong
  62.             <<setw(10)<<left<<xep<<endl;
  63.         }
  64.         float gettong(){
  65.             return this->tong;
  66.         }
  67.         int getten(){
  68.             return this->ten.size();
  69.         }
  70. };
  71.  
  72. bool cmp(SV a, SV b){
  73.     if(a.gettong() < b.gettong()) return a.gettong();
  74.         // if(a.gettong() > b.gettong())  return b.gettong();
  75.         // else{
  76.     if(a.gettong() == b.gettong()){
  77.         if(a.getten() < b.getten()) return a.getten();
  78.     }
  79.         //         else return b.getten();
  80.         //     }
  81.         // }
  82. }
  83. int main(){
  84.     int n;
  85.     cout<<"Nhap so luong sv: "; cin >> n;
  86.     SV sv[n];
  87.     cin.ignore();
  88.     for(int i = 0; i < n; i++){
  89.         sv[i].nhap();
  90.         sv[i].tinh();
  91.     }
  92.     sort(sv,sv+n,cmp);
  93.     cout<<endl<<"--------\n";
  94.     cout<<setw(20)<<left<<"Ho va ten"
  95.     <<setw(15)<<left<<"Ma sinh vien"
  96.     <<setw(16)<<left<<"Ngay sinh"
  97.     <<setw(10)<<left<<"Nganh"
  98.     <<setw(13)<<left<<"Diem tong"
  99.     <<setw(10)<<left<<"Xep loai"<<endl;
  100.     for(int i = 0; i < n; i++){
  101.         sv[i].xuat();
  102.     }
  103.  
  104. }
Success #stdin #stdout 0.01s 5272KB
comments (?)
stdin
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3
Do Hieu
123
IT
11 3 2005
7.8
9.2
10
Pham Huu Chinh
222
oto
3 1 2001
2
6
5
Nguyen Canh
333
it
1 3 2001
7.8
9.2
10
stdout
copy 
Nhap so luong sv: Nhap ho ten: Ma sinh vien: Nganh hoc: Ngay sinh(date): Nhap diem toan: Nhap diem van: Nhap diem tin: 
Nhap ho ten: Ma sinh vien: Nganh hoc: Ngay sinh(date): Nhap diem toan: Nhap diem van: Nhap diem tin: 
Nhap ho ten: Ma sinh vien: Nganh hoc: Ngay sinh(date): Nhap diem toan: Nhap diem van: Nhap diem tin: 

--------
Ho va ten           Ma sinh vien   Ngay sinh       Nganh     Diem tong    Xep loai  
Nguyen Canh         333            01/03/2001      it        8.8          Gioi      
Pham Huu Chinh      222            03/01/2001      oto       4.2          Trung binh
Do Hieu             123            11/03/2005      IT        8.8          Gioi
https://ideone.com/KaSTpa
language:
C++ (gcc 8.3)
created:
76 days ago
visibility:
public

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