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  1. #include <stdio.h>
  2.  
  3. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2]);
  4.  
  5. int main(void) {
  6.  
  7. 	int x[2][2] = {{1,2},{3,4}};
  8. 	int y[2][2] = {{1,2},{3,4}};
  9. 	int ans[2][2] = {0};
  10.  
  11. 	array_mul(x,y,ans);
  12. 	for(int i=0; i<2; i++){
  13. 		for(int j=0; j<2; j++){
  14. 		printf("%d ",ans[i][j]);
  15. 		}
  16. 	}
  17.  
  18. 	return 0;
  19. }
  20.  
  21. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2]){
  22. 	for(int i=0; i<2; i++){
  23. 		for(int j=0; j<2; j++){
  24. 			ans[i][j]=0;
  25. 			for( int k=0; k<2; k++){
  26. 				ans[i][j]+=x[i][k]*y[k][j];
  27. 			}
  28. 		}
  29. 	}
  30.  
  31.  
  32. }
  33.  
Success #stdin #stdout 0s 5324KB
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7 10 15 22
https://ideone.com/xxFNxi
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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