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  1. #include <stdio.h>
  2.  void arry_mul(int(*x)[2], int(*y)[2], int (*ans)[2]);
  3. int main(void) {
  4. 	int x[2][2]={{1,2},{3,4}};
  5. 	int y[2][2]={{1,2},{3,4}};
  6. 	int ans[2][2];
  7. 	arry_mul( x, y, ans);
  8. 	for(int i=0;i<2;i++){
  9. 		for(int j=0;j<2;j++){
  10. 	       printf("%3d",ans[i][j]);
  11. 		}
  12. 		putchar('\n');
  13. 	}
  14. 	return 0;
  15. }
  16. void arry_mul(int(*x)[2], int(*y)[2],int (*ans)[2]){
  17. 	for(int i=0;i<2;i++){
  18.  
  19. 		for(int j=0;j<2;j++){
  20. 			ans[i][j]=0;
  21.  
  22. 		for(int k=0;k<2;k++){
  23. 			ans [i][j]+=x[i][k]*y[k][j];
  24.  
  25. 		}	
  26. 	}
  27.   }
  28. }
Success #stdin #stdout 0s 5288KB
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https://ideone.com/d85xFR
language:
C99 (gcc 8.3)
created:
2 days ago
visibility:
public

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