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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template <typename T>
  5. class Matrix {
  6. private:
  7.     int rows, cols;
  8.     T** data;
  9.  
  10. public:
  11.  
  12.     Matrix(int r, int c) : rows(r), cols(c) {
  13.         data = new T*[rows];
  14.         for (int i = 0; i < rows; ++i)
  15.             data[i] = new T[cols];
  16.     }
  17.  
  18.  
  19.     ~Matrix() {
  20.         for (int i = 0; i < rows; ++i)
  21.             delete[] data[i];
  22.         delete[] data;
  23.     }
  24.  
  25.     void input() {
  26.         for (int i = 0; i < rows; ++i)
  27.             for (int j = 0; j < cols; ++j)
  28.                 cin >> data[i][j];
  29.     }
  30.  
  31.  
  32.     void print() const {
  33.         for (int i = 0; i < rows; ++i) {
  34.             for (int j = 0; j < cols; ++j)
  35.                 cout << data[i][j] << " ";
  36.             cout << endl;
  37.         }
  38.     }
  39.     Matrix<T> operator-(const Matrix<T>& other) {
  40.         if (rows != other.rows || cols != other.cols)
  41.             throw runtime_error("Розміри матриць не співпадають!");
  42.  
  43.         Matrix<T> result(rows, cols);
  44.         for (int i = 0; i < rows; ++i)
  45.             for (int j = 0; j < cols; ++j)
  46.                 result.data[i][j] = data[i][j] - other.data[i][j];
  47.  
  48.         return result;
  49.     }
  50. };
  51.  
  52. int main() {
  53.     Matrix<int> A(2, 2);
  54.     Matrix<int> B(2, 2);
  55.  
  56.     A.input();
  57.  
  58.     B.input();
  59.  
  60.     Matrix<int> C = A - B;
  61.  
  62.     C.print();
  63.  
  64.     return 0;
  65. }
  66.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
2 4 3 2 

3 2 5 1
stdout 
-1 2 
-2 1
https://ideone.com/pIgRbG
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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