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  1. #include <stdio.h>
  2. int main(void){
  3.  
  4.     int x[2][2]={{1, 2},{3, 4}};
  5.     int y[2][2]={{1, 2},{3, 4}};
  6.     int ans[2][2];
  7.  
  8.     array_mul(x,y,ans);
  9.  
  10.     return 0;
  11. }
  12.  
  13. void array_mul(int (*x)[2],int (*y)[2],int (*ans)[2]) {
  14.     for(int i=0; i<2; i++){
  15.     for(int j=0; j<2; j++){
  16.     ans[i][j] = 0;
  17.     for(int a=0; a<2; a++){
  18.     ans[i][j] += x[i][a]*y[a][j];
  19.     }
  20.     }
  21.     }
  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. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/RlGiPi
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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