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  1. #include <stdio.h>
  2. void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] );
  3. int main(){
  4. 		int x[2][2]={{1,2},{3,4}};
  5. 		int y[2][2]={{1,2},{3,4}};
  6. 		int ans[2][2];
  7. 		 array_mul(x,y,ans);
  8. 	return 0;
  9. }
  10. void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] ){
  11.  
  12. 	int i,j;
  13. 	for(i=0;i<2;i++){
  14. 		for(j=0;j<2;j++){
  15. 			ans[i][j]=0;
  16. 			for(int k=0;k<2;k++){
  17. 			ans[i][j]+=x[i][k]*y[k][j];
  18. 			}
  19. 		}
  20.  
  21. 	}
  22.  for(i=0;i<2;i++){
  23. 		for(j=0;j<2;j++){
  24. 	printf("%d ",ans[i][j]);
  25. }
  26. printf("\n");}
  27.  
  28. }
  29.  
Success #stdin #stdout 0s 5284KB
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https://ideone.com/5yYd4o
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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