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  1. #include <stdio.h>
  2.  
  3. void rotate(int **A, int n11, int n12)
  4. {
  5.   for (int i = 0; i < n11; ++i)
  6.   {
  7.     for (int j = 0; j < n12; ++j)
  8.       printf("%2d ", A[i][j]);
  9.     printf("\n");
  10.   }
  11.   printf("\n");
  12.  
  13.   if (n11 <= 2 ||  n12 <= 2)
  14.     return;
  15.  
  16.   int *sub_A[n11 - 2];
  17.   for (int i = 0; i < n11 - 2; ++i)
  18.     sub_A[i] = &A[i + 1][1];
  19.  
  20.   rotate(sub_A, n11 - 2, n12 - 2);
  21. }
  22.  
  23. int main(void) 
  24. {
  25.   int *A[] =
  26.   {
  27.   	(int []) {  1,  2,  3,  4,  5 },
  28.     (int []) {  6,  7,  8,  9, 10 },  	
  29.     (int []) { 11, 12, 13, 14, 15 },
  30.     (int []) { 16, 17, 18, 19, 20 },
  31.     (int []) { 21, 22, 23, 24, 25 }
  32.   };
  33.  
  34.   rotate(A, 5, 5);
  35. }
  36.  
Success #stdin #stdout 0s 2008KB
comments (?)
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 17 18 19 20 
21 22 23 24 25 

 7  8  9 
12 13 14 
17 18 19 

13
https://ideone.com/Sm40iD
language:
C99 (gcc 8.3)
created:
10 years ago
visibility:
public

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