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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. }
  13.  
  14. int main(void)
  15. {
  16.     int x[2][2] = {{1, 2},{3, 4}};
  17.     int y[2][2] = {{1,2 },{3, 4}};
  18.  
  19.     int ans[2][2];
  20.  
  21.     array_mul(x, y, ans);
  22.  
  23.     for(int i = 0; i < 2; i++){
  24.         for(int j = 0; j < 2; j++){
  25.             printf("%d ", ans[i][j]);
  26.         }
  27.         printf("\n");
  28.     }
  29.  
  30.     return 0;
  31. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/KHiVvv
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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