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  1. #include <stdio.h>
  2. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]);
  3. int main(void) {
  4. 	int i,j;
  5. 	int x[2][2]={{1,2},{3,4}};
  6. 	int y[2][2]={{1,2},{3,4}};
  7. 	int ans[2][2]={0};
  8. 	array_mul(x,y,ans);
  9. 	for(i=0;i<2;i++){
  10. 		for(j=0;j<2;j++){
  11. 			printf("%2d",ans[i][j]);
  12. 		}
  13. 		printf("\n");
  14. 	}
  15.  
  16. 	return 0;
  17. }
  18. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]){
  19. 	for(int i=0;i<2;i++){
  20. 		for(int j=0;j<2;j++){
  21. 			ans[i][j]=0;
  22. 			for(int k=0;k<2;k++){
  23. 				ans[i][j]+=x[i][k]*y[k][j];
  24. 			}
  25. 		}
  26.  
  27. 	}
  28. }
  29.  
Success #stdin #stdout 0.01s 5324KB
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https://ideone.com/PUKAk8
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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