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  1. #include <stdio.h>
  2.  
  3. void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] ){
  4. 	for(int i = 0; i < 2; i++){
  5. 		for(int j = 0; j < 2; j++){
  6. 			ans[i][j]=0;
  7. 			for(int k = 0; k < 2; k++){
  8. 				ans[i][j]+=x[i][k]*y[k][j];
  9. }}}}
  10.  
  11. int main(void) {
  12. 	int x[2][2]={ {1,2}, {3,4} };
  13. 	int y[2][2]={ {1,2}, {3,4} };
  14. 	int ans[2][2];
  15. 	array_mul( x , y , ans );
  16. 	for(int i = 0; i < 2; i++){
  17. 		printf("\n");
  18. 		for(int j = 0; j < 2; j++){
  19. 			printf("%d  ",ans[i][j]);
  20. }}
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0.01s 5284KB
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7  10  
15  22
https://ideone.com/ysxcSK
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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