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  1. #include<stdio.h>
  2. #define ROW 4
  3. #define COL 4
  4. int M[ROW][COL] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
  5. main()
  6. {
  7.     int i, j, t;
  8.     for (i = 0; i < 4; ++i)
  9.     {
  10.         for(j = i; j < 4; ++j){
  11.      t = M[i][j];
  12.      M[i][j] = M[j][i];
  13.      M[j][i] = t;
  14. }
  15.     }
  16.     for (i = 0; i < 4; ++i)
  17.     {
  18.         for (j = 0; j < 4; ++j)
  19.             printf ("%d ", M[i][j]);
  20.       printf ("\n");
  21.     }
  22. }
Success #stdin #stdout 0s 2168KB
comments (?)
stdin
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Standard input is empty
stdout
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1 5 9 13 
2 6 10 14 
3 7 11 15 
4 8 12 16
https://ideone.com/DGjfQU
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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