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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. class TL {
  4.     char Tensp[30];
  5.     char Mausac[20];
  6.     float Gia;
  7.   public:
  8.     // Constructor mặc định
  9.     TL() {
  10.         strcpy(Tensp, "");
  11.         strcpy(Mausac, "");
  12.         Gia = 0.0;
  13.     }
  14.  
  15.     // Constructor có tham số
  16.     TL(const char ten[30], const char mau[20], float gia) {
  17.         strcpy(Tensp, ten);
  18.         strcpy(Mausac, mau);
  19.         Gia = gia;
  20.     }
  21.  
  22.     // Phương thức toán tử >=
  23.     bool operator>=(TL y) {
  24.         return (Gia > 250 && strcmp(Mausac, "trang") == 0);
  25.     }
  26.  
  27.     // Toán tử xuất <<
  28.     friend ostream& operator<<(ostream& x, const TL& y) {
  29.         x << "Ten san pham: " << y.Tensp << endl;
  30.         x << "Mau sac: " << y.Mausac << endl;
  31.         x << "Gia: " << y.Gia << endl;
  32.         return x;
  33.     }
  34.  
  35.     // Toán tử nhập >>
  36.     friend istream& operator>>(istream& x, TL& y) {
  37.         cout << "Nhap ten san pham: ";   x>>y.Tensp;
  38.         cout << "Nhap mau sac: ";   x>>y.Mausac;
  39.         cout << "Nhap gia: ";  x >> y.Gia;
  40.         return x;
  41.     }
  42.     // Toán tử ==
  43.     bool operator==(TL y) {
  44.         return (strcmp(Tensp, y.Tensp) == 0 && strcmp(Mausac, y.Mausac) == 0 && Gia == y.Gia);
  45.     }
  46. };
  47.  
  48. int main() {
  49.     TL A("LG", "trang", 5000);
  50.     cout << "Thong tin tu lanh A:" << endl;
  51.     cout << A << endl;
  52.  
  53.     TL B;
  54.     cout << "Nhap thong tin tu lanh B: " << endl;
  55.     cin >> B;
  56.  
  57.     ofstream f("Tl.txt");
  58.  
  59.     if (A == B) {
  60.         cout << "2 tu lanh co cung thong tin!" << endl;
  61.         f << "2 tu lanh co cung thong tin!" << endl;
  62.     } else {
  63.         cout << "2 tu lanh khong co cung thong tin!" << endl;
  64.         f << "2 tu lanh khong co cung thong tin!" << endl;
  65.     }
  66.  
  67.     if (A >= A || B >= B) {
  68.         cout << "Co tu lanh co gia > 250 va mau trang!" << endl;
  69.         f << "Co tu lanh co gia > 250 va mau trang!" << endl;
  70.     } else {
  71.         cout << "Khong co tu lanh nao thoa man dieu kien!" << endl;
  72.         f << "Khong co tu lanh nao thoa man dieu kien!" << endl;
  73.     }
  74.     f.close();
  75.     return 0;
  76. }
Success #stdin #stdout 0.01s 5280KB
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stdin
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Standard input is empty
stdout
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Thong tin tu lanh A:
Ten san pham: LG
Mau sac: trang
Gia: 5000

Nhap thong tin tu lanh B: 
Nhap ten san pham: Nhap mau sac: Nhap gia: 2 tu lanh khong co cung thong tin!
Co tu lanh co gia > 250 va mau trang!
https://ideone.com/GhNvSk
language:
C++ (gcc 8.3)
created:
10 hours ago
visibility:
public

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