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  1. #include <stdio.h>
  2. void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] ){
  3. 	int i,j,k;
  4. 	for(i=0;i<2;i++){
  5. 		for(j=0;j<2;j++){
  6. 			ans[i][j]=0;
  7. 			for(k=0;k<2;k++){
  8. 				ans[i][j]=ans[i][j]+x[i][k]*y[k][j];
  9. 			}
  10. 		}
  11. 	}
  12. 		for(i=0;i<2;i++){
  13. 		printf("\n");
  14. 		for(j=0;j<2;j++){
  15. 			printf("%d ",ans[i][j]);
  16. 		}
  17. 		}
  18. 	}
  19.  
  20.  
  21.  
  22.  
  23. int main(void) {
  24. 	int x[2][2]={{1,2},{3,4}};
  25. 	int y[2][2]={{1,2},{3,4}};
  26. 	int ans[2][2];
  27. 	array_mul(x,y,ans);
  28.  
  29. 	return 0;
  30. }
  31.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/Tob40m
language:
C99 (gcc 8.3)
created:
2 days ago
visibility:
public

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