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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.     printf("ans =\n");
  14.     for (int i = 0; i < 2; i++) {
  15.         printf("%d %d\n", ans[i][0], ans[i][1]);
  16.     }
  17. }
  18.  
  19. int main(void) {
  20.     int x[2][2] = {
  21.         {1, 2},
  22.         {3, 4}
  23.     };
  24.  
  25.     int y[2][2] = {
  26.         {1, 2},
  27.         {3, 4}
  28.     };
  29.  
  30.     int ans[2][2];
  31.  
  32.     array_mul(x, y, ans);
  33.  
  34.     return 0;
  35. }
  36.  
Success #stdin #stdout 0s 5324KB
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stdin
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Standard input is empty
stdout
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ans =
7 10
15 22
https://ideone.com/HPdSEy
20251211課題2
language:
C99 (gcc 8.3)
created:
2 days ago
visibility:
public

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