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  1. #include <iostream>
  2. #include <iomanip>
  3.  
  4. using namespace std;
  5.  
  6. class Matrix
  7. {
  8.     size_t rows, cols;
  9.     int **data;
  10.     void swap(Matrix&M)
  11.     {
  12.         std::swap(data,M.data);
  13.         std::swap(rows,M.rows);
  14.         std::swap(cols,M.cols);
  15.     }
  16. public:
  17.     Matrix(size_t rows, size_t cols):rows(rows),cols(cols)
  18.     {
  19.         data = new int *[rows];
  20.         for(size_t i = 0; i < rows; i++)
  21.             data[i] = new int[cols];
  22.     }
  23.     ~Matrix()
  24.     {
  25.         for (size_t i = 0; i < rows; i++)
  26.             delete[] data[i];
  27.         delete[] data;
  28.     }
  29.  
  30.     Matrix(const Matrix&M):Matrix(M.rows,M.cols)
  31.     {
  32.         for(size_t i = 0; i < rows; i++)
  33.         for(size_t j = 0; j < cols; j++)
  34.             data[i][j] = M.data[i][j];
  35.     }
  36.  
  37.     Matrix& operator = (const Matrix& M)
  38.     {
  39.         Matrix tmp(M);
  40.         swap(tmp);
  41.         return *this;
  42.     }
  43.  
  44.     friend ostream& operator<<(ostream&os, const Matrix& M);
  45.     friend istream& operator>>(istream&is,       Matrix& M);
  46.  
  47.     Matrix transpose()
  48.     {
  49.         Matrix temp(cols,rows);
  50.         for(size_t i = 0; i < rows; i++)
  51.             for(size_t j = 0; j < cols; j++)
  52.                 temp.data[j][i] = data[i][j];
  53.         return temp;
  54.     }
  55.  
  56. };
  57.  
  58.  
  59. ostream& operator<<(ostream&os, const Matrix& M)
  60. {
  61.     for(size_t i = 0; i < M.rows; i++)
  62.     {
  63.         for(size_t j = 0; j < M.cols; j++)
  64.         {
  65.             os << M.data[i][j]<< " ";
  66.         }
  67.         os << "\n";
  68.     }
  69.     return os;
  70. }
  71.  
  72. istream& operator>>(istream&is, Matrix& M)
  73. {
  74.     for(size_t i = 0; i < M.rows; i++)
  75.     {
  76.         for(size_t j = 0; j < M.cols; j++)
  77.         {
  78.             cout << "Matrix[" << i << "][" << j << "] = ";
  79.             is >> M.data[i][j];
  80.         }
  81.     }
  82.     return is;
  83. }
  84.  
  85. int main()
  86. {
  87.     int num_of_cols, num_of_rows;
  88.     cout <<"input the num of cols and rows"<<endl;
  89.     cin >> num_of_rows >> num_of_cols;
  90.  
  91.     Matrix ob1(num_of_rows, num_of_cols);
  92.     cin >> ob1;
  93.     cout << "\n\n" << ob1 << "\n\n";
  94.  
  95.     Matrix ob2 = ob1.transpose();
  96.  
  97.     cout << ob2 << "\n\n";
  98. }
  99.  
  100.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
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2 5
0 1 2 3 4 5 6 7 8 9
stdout
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input the num of cols and rows
Matrix[0][0] = Matrix[0][1] = Matrix[0][2] = Matrix[0][3] = Matrix[0][4] = Matrix[1][0] = Matrix[1][1] = Matrix[1][2] = Matrix[1][3] = Matrix[1][4] = 

0 1 2 3 4 
5 6 7 8 9 


0 5 
1 6 
2 7 
3 8 
4 9
https://ideone.com/Xne683
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
secret

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