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  1. #include <stdio.h>
  2.  
  3. void array_mul(int (*x)[2],int (*y)[2],int (*ans)[2]);
  4. void disp(int (*ans)[2]);
  5.  
  6. int main(void) {
  7.  
  8. 	int x[2][2] = {{1,2},{3,4}};
  9. 	int y[2][2] = {{1,2},{3,4}};
  10. 	int ans[2][2] = {0};
  11.  
  12. 	array_mul(x,y,ans);
  13. 	for(int i=0;i<2;i++){
  14.  
  15. 		for(int j=0;j<2;j++){
  16.  
  17. 			printf("%d ",ans[i][j]);
  18. 		}
  19.  
  20. 	printf("\n");
  21. 	}
  22.  
  23. 	return 0;
  24. }
  25.  
  26. void array_mul(int (*x)[2],int (*y)[2],int (*ans)[2]){
  27.  
  28. 	for(int i=0;i<2;i++){
  29.  
  30. 		for(int j=0;j<2;j++){
  31.  
  32. 			for(int k=0;k<2;k++){
  33.  
  34. 				ans[i][j] += x[i][k]*y[k][j];
  35. 			}
  36. 		}
  37. 	}
  38. }
  39.  
  40.  
Success #stdin #stdout 0s 5320KB
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7 10 
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https://ideone.com/BHtc8E
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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