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  1. #include<stdio.h>
  2.  
  3. void changematrix(int **mm,int row, int column){
  4. 	int i,j;
  5. 	for( i = 0;i < row; i++){
  6. 		for( j = 0; j < column; j++){
  7. 			*(*(mm + i) + j) = 2* *(*(mm + i) + j);
  8. 			//mm[i][j] *= 2;
  9. 		}
  10. 	}
  11. }
  12.  
  13. int main(void){
  14. 	int i,j;
  15. 	int row, column;
  16. 	printf("Type the number of row\n");
  17. 	scanf("%d", &row);
  18. 	printf("Type the number of columns\n");
  19. 	scanf("%d", &column);
  20. 	int mat[row][column];
  21. 	int *mm[row];
  22.  
  23. 	for(i = 0; i < row; ++i)
  24. 		mm[i] = mat[i];
  25.  
  26. 	printf("Now type the numbers\n");
  27. 	for( i = 0; i < row; i++){
  28. 		for( j = 0; j < column; j++){
  29. 			scanf("%d", &mat[i][j]);
  30. 		}
  31. 	}
  32.  
  33. 	changematrix(mm, row, column);
  34.  
  35. 	for( i = 0; i < row; i++){
  36. 		for( j = 0; j < column; j++){
  37. 			printf("%d ", mat[i][j]);
  38. 		}
  39. 		printf("\n");
  40. 	}
  41. }
Success #stdin #stdout 0s 9432KB
comments (?)
stdin
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3
3
1 2 3
4 5 6
7 8 9
stdout
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Type the number of row
Type the number of columns
Now type the numbers
2 4 6 
8 10 12 
14 16 18
https://ideone.com/CV3leD
language:
C99 (gcc 8.3)
created:
8 years ago
visibility:
public

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