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  1. #include <stdio.h>
  2.  
  3. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2]) {
  4.     for (int i = 0; i < 2; i++) {
  5.         for (int j = 0; j < 2; j++) {
  6.             ans[i][j] = 0;
  7.             for (int k = 0; k < 2; k++) {
  8.                 ans[i][j] += x[i][k] * y[k][j];
  9.             }
  10.         }
  11.     }
  12.     printf("ans = \n");
  13.     for (int i = 0; i < 2; i++) {
  14.         for (int j = 0; j < 2; j++) {
  15.             printf("%d ", ans[i][j]);
  16.         }
  17.         printf("\n");
  18.     }
  19. }
  20. int main(void) {
  21.     int x[2][2] = {
  22.         {1, 2},
  23.         {3, 4}
  24.     };
  25.     int y[2][2] = {
  26.         {1, 2},
  27.         {3, 4}
  28.     };
  29.     int ans[2][2];
  30.     array_mul(x, y, ans);
  31.     return 0;
  32. }
Success #stdin #stdout 0s 5312KB
comments (?)
stdin
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Standard input is empty
stdout
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ans = 
7 10 
15 22
https://ideone.com/Y51V4z
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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