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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.     int x[2][2] = {{1,2},{3,4}};
  16.  
  17.     int y[2][2] = {{1,2},{3,4}};
  18.  
  19.     int ans[2][2];
  20.  
  21.     array_mul(x, y, ans);
  22.  
  23.  
  24.     for (int i=0;i<2;i++) {
  25.         printf("%d %d\n",ans[i][0],ans[i][1]);
  26.     }
  27.  
  28.     return 0;
  29. }
  30.  
  31.  
Success #stdin #stdout 0s 5316KB
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https://ideone.com/O6xayg
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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