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  1. #include <stdio.h>
  2.  
  3. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2])
  4. {
  5.     for (int i = 0; i < 2; i++) {
  6.         for (int j = 0; j < 2; j++) {
  7.             ans[i][j] = 0;
  8.             for (int k = 0; k < 2; k++) {
  9.                 ans[i][j] += x[i][k] * y[k][j];
  10.             }
  11.         }
  12.     }
  13.  
  14.     printf("Result:\n");
  15.     for (int i = 0; i < 2; i++) {
  16.         printf("%d %d\n", ans[i][0], ans[i][1]);
  17.     }
  18. }
  19.  
  20. int main(void)
  21. {
  22.     int x[2][2] = {
  23.         {1, 2},
  24.         {3, 4}
  25.     };
  26.  
  27.     int y[2][2] = {
  28.         {1, 2},
  29.         {3, 4}
  30.     };
  31.  
  32.     int ans[2][2];
  33.  
  34.     array_mul(x, y, ans);
  35.  
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0s 5288KB
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Standard input is empty
stdout
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Result:
7 10
15 22
https://ideone.com/OsBiKo
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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