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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.  
  15. int main(void) {
  16.     int x[2][2]={1,2,3,4};
  17.     int y[2][2]={1,2,3,4};
  18.     int ans[2][2];
  19.  
  20.     array_mul(x, y, ans);
  21.  
  22.     printf("%d %d\n", ans[0][0], ans[0][1]);
  23.     printf("%d %d\n", ans[1][0], ans[1][1]);
  24.  
  25.     return 0;
  26. }
  27.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
7 10
15 22
https://ideone.com/YDgOj0
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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