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  1. #include <stdio.h>
  2. void array_mul(int(*x)[2], int(*y)[2],int(*ans)[2]);
  3.  
  4. int main(void) {
  5. 	int x[2][2]={{1,2},{3,4}};
  6. 	int y[2][2]={{1,2},{3,4}};
  7.  
  8. 	int ans[2][2];
  9.  
  10. 	array_mul(x,y,ans);
  11.  
  12. 	return 0;
  13. }
  14.  
  15. void array_mul(int(*x)[2], int(*y)[2],int(*ans)[2]){
  16. 	int i,j,k;
  17.  
  18. 	for(i=0;i<2;i++){
  19. 		for(j=0;j<2;j++){
  20. 			ans[i][j]=0;
  21. 			for(k=0;k<2;k++){
  22. 				ans[i][j]+=x[i][k]*y[k][j];
  23. 			}
  24. 		}
  25. 	}
  26.  
  27. 	for(i=0;i<2;i++){
  28. 		for(j=0;j<2;j++){
  29. 			printf("%d ",ans[i][j]);
  30. 		}
  31. 		printf("\n");
  32. 	}
  33.  
  34. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/g8sMY6
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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