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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4.  
  5. int m[5][5] =
  6. {
  7.     { 1,2,3,4,5},
  8.     { 6,7,8,9,10},
  9.     { 11,12,13,14,15},
  10.     { 16,17,18,19,20},
  11.     { 21,22,23,24,25}
  12. };
  13.  
  14. void out_matrix(int r[4][5])
  15. {
  16.     for(int i = 0; i < 4; ++i)
  17.     {
  18.         for(int j = 0; j < 5; ++j)
  19.         {
  20.             printf("%2d  ",r[i][j]);
  21.         }
  22.         puts("");
  23.     }
  24. }
  25.  
  26. int main()
  27. {
  28.     typedef int reduced_matrix[4][5];
  29.     reduced_matrix * r = (reduced_matrix*)(m+1);
  30.  
  31.     for(int i = 0; i < 4; ++i)
  32.     {
  33.         for(int j = 0; j < 5; ++j)
  34.         {
  35.             printf("%2d  ",(*r)[i][j]);
  36.         }
  37.         puts("");
  38.     }
  39.     puts("----\n");
  40.     out_matrix(m+1);
  41. }
  42.  
Success #stdin #stdout 0s 4340KB
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stdin
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Standard input is empty
stdout
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 6   7   8   9  10  
11  12  13  14  15  
16  17  18  19  20  
21  22  23  24  25  
----

 6   7   8   9  10  
11  12  13  14  15  
16  17  18  19  20  
21  22  23  24  25
https://ideone.com/EXbQ9J
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

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