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  1. #include <stdio.h>
  2. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]) {
  3. 	for(int i=0;i<=1;i++){
  4. 		for(int j=0;j<=1;j++){
  5. 			ans[i][j]=0;
  6. 			for(int k=0;k<=1;k++){
  7. 				ans[i][j]=ans[i][j]+x[i][k]*y[k][j];
  8. 			}
  9. 		}
  10. 	}
  11.  
  12. }
  13.  
  14. int main(void) {
  15. 	int x[2][2]={{1,2},{3,4}},y[2][2]={{1,2},{3,4}},ans[2][2]={0};
  16. 	array_mul(x,y,ans);
  17. 	for(int i=0;i<=1;i++){
  18. 		for(int j=0;j<=1;j++){
  19. 			printf("%3d   ",ans[i][j]);
  20. 		}
  21. 		printf("\n");
  22. 	}		
  23. 	return 0;
  24. }
  25.  
Success #stdin #stdout 0.01s 5316KB
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Standard input is empty
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  7    10   
 15    22
https://ideone.com/KrtzKk
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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