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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void interchangeRows(int matrix[][100], int rows, int cols) {
  5.     for (int j = 0; j < cols; j++) {
  6.         int temp = matrix[0][j];
  7.         matrix[0][j] = matrix[rows - 1][j];
  8.         matrix[rows - 1][j] = temp;
  9.     }
  10. }
  11.  
  12. int main() {
  13.     int rows = 3, cols = 4;
  14.     int matrix[100][100] = {
  15.         {1, 2, 3, 4},
  16.         {5, 6, 7, 8},
  17.         {9, 10, 11, 12}
  18.     };
  19.  
  20.     interchangeRows(matrix, rows, cols);
  21.  
  22.     cout << "Matrix after interchange:" << endl;
  23.     for (int i = 0; i < rows; i++) {
  24.         for (int j = 0; j < cols; j++) {
  25.             cout << matrix[i][j] << " ";
  26.         }
  27.         cout << endl;
  28.     }
  29.  
  30.     return 0;
  31. }
  32.  
Success #stdin #stdout 0.01s 5328KB
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stdin
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Standard input is empty
stdout
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Matrix after interchange:
9 10 11 12 
5 6 7 8 
1 2 3 4
https://ideone.com/GWPlcQ
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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