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  1. #include <stdio.h>
  2.  
  3. int ans[2][2];
  4. void array_mul(int (*x)[2],int (*y)[2],int (*ans)[2])
  5. {
  6. 	for(int i=0;i<2;i++) //行
  7. 	{
  8. 		for(int j=0;j<2;j++) //列
  9. 		{
  10. 			for(int m=0;m<2;m++)
  11. 			{
  12. 				int s,t;
  13. 				s = (x[i][0] * y[0][m]);
  14. 				t = (x[i][0] * y[i][1]);
  15. 				ans[i][j] = (s + t);
  16. 			}
  17. 		}
  18. 	}
  19.  
  20. 	for(int k=0;k<2;k++)
  21. 	{
  22. 		for(int f=0;f<2;f++)
  23. 		{
  24. 			printf("%d\n",ans[k][f]);
  25. 		}
  26. 	}
  27. }
  28.  
  29. int main(void) {
  30. 	int x[2][2] = { {1,2},
  31. 					{3,4} };
  32. 	int y[2][2] = { {1,2},
  33. 					{3,4} };
  34. 	array_mul(x,y,ans);
  35. 	return 0;
  36. }
  37.  
Success #stdin #stdout 0.01s 5272KB
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4
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18
18
https://ideone.com/O6nb1I
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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