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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. 	int x[2][2] = { {1,2}, {3,4} };
  7. 	int y[2][2] = { {1,2}, {3,4} };
  8. 	int ans[2][2] = {0};
  9.  
  10. 	array_mul( x, y, ans);
  11.  
  12. 	for (int i = 0; i < 2; i++) {
  13.         for (int j = 0; j < 2; j++) {
  14.             printf("%d ", ans[i][j]);
  15.         }
  16.         printf("\n");
  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.  
  25. 			for(int k=0; k<2; k++){
  26. 				ans[i][j]=ans[i][j]+x[i][k]*y[k][j];
  27. 			}
  28. 		}
  29. 	}
  30. }
  31.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/YLUlu5
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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