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  1. #include <stdio.h>
  2.  
  3. void array_mu(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.    int y[2][2]={{1,2},{3,4}};
  17.    int ans[2][2];
  18.    array_mu(x,y,ans);
  19.    for (int i = 0; i < 2; i++) {
  20.         for (int j = 0; j < 2; j++) {
  21.             printf("%d ", ans[i][j]);
  22.         }
  23.         printf("\n");
  24.    }
  25.     return 0;
  26. }
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/484q5g
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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