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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.     {for(j = 0; j < 4; ++j){ t = M[i][j]; M[i][j] = M[j][i]; M[j][i] = t;
  10. }}
  11.     for (i = 0; i < 4; ++i)
  12.     {
  13.         for (j = 0; j < 4; ++j)
  14.             printf ("%d ", M[i][j]);
  15.       printf ("\n");
  16.     }
  17. }
Success #stdin #stdout 0s 5280KB
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stdin
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Standard input is empty
stdout
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1 2 3 4 
5 6 7 8 
9 10 11 12 
13 14 15 16
https://ideone.com/1mPvMW
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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