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  1. #include <stdio.h>
  2.  
  3. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2])
  4. {
  5.     int i, j, k;
  6.  
  7.     for (i = 0; i < 2; i++) {
  8.         for (j = 0; j < 2; j++) {
  9.             ans[i][j] = 0;
  10.             for (k = 0; k < 2; k++) {
  11.                 ans[i][j] += x[i][k] * y[k][j];
  12.             }
  13.         }
  14.     }
  15.  
  16.     printf("Result matrix (ans):\n");
  17.     for (i = 0; i < 2; i++) {
  18.         for (j = 0; j < 2; j++) {
  19.             printf("%d ", ans[i][j]);
  20.         }
  21.         printf("\n");
  22.     }
  23. }
  24.  
  25. int main(void)
  26. {
  27.     int x[2][2] = {
  28.         {1, 2},
  29.         {3, 4}
  30.     };
  31.  
  32.     int y[2][2] = {
  33.         {1, 2},
  34.         {3, 4}
  35.     };
  36.  
  37.     int ans[2][2];
  38.  
  39.     array_mul(x, y, ans);
  40.  
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0.01s 5316KB
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stdin
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Standard input is empty
stdout
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Result matrix (ans):
7 10 
15 22
https://ideone.com/NpOoD9
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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