fork download
copy 
  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.     for (i = 0; i < 2; i++) {
  17.         for (j = 0; j < 2; j++) {
  18.             printf("%d ", ans[i][j]);
  19.         }
  20.         printf("\n");
  21.     }
  22. }
  23.  
  24. int main(void)
  25. {
  26.     int x[2][2] = {
  27.         {1, 2},
  28.         {3, 4}
  29.     };
  30.  
  31.     int y[2][2] = {
  32.         {1, 2},
  33.         {3, 4}
  34.     };
  35.  
  36.     int ans[2][2];
  37.  
  38.     array_mul(x, y, ans);
  39.  
  40.     return 0;
  41. }
  42.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
7 10 
15 22
https://ideone.com/pHxIsX
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!