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  1. #include <stdio.h>
  2.  
  3. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2]);
  4.  
  5. int main(void) {
  6. 	int x[2][2]={{1,2},{3,4}};
  7. 	int y[2][2]={{1,2},{3,4}};
  8. 	int ans[2][2]={0};
  9.  
  10. 	array_mul(x,y,ans);
  11. 	return 0;
  12. }
  13.  
  14. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2]){
  15. 	for(int i=0;i<2;i++){
  16.         for(int j=0;j<2;j++){
  17.             ans[i][j]=0;
  18.             for (int k=0;k<2;k++){
  19.                 ans[i][j]+=x[i][k]*y[k][j];
  20.             }
  21.         }
  22.     }
  23. 	for (int i=0;i<2;i++){
  24.         printf("%d %d\n",ans[i][0],ans[i][1]);
  25.     }
  26. }
  27.  
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/0zrxT0
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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