fork(1) download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <stddef.h>
  4.  
  5. void arr_fill(unsigned rows, unsigned cols, int **array) {
  6. 	unsigned i,j;
  7. 	for(i=0;i<rows;i++)
  8. 		for(j=0;j<cols;j++)
  9. 			scanf("%d",&array[i][j]);
  10. }
  11.  
  12. void arr_print(unsigned rows, unsigned cols, int **array) {
  13. 	unsigned i,j;
  14. 	for(i=0;i<rows;i++) {
  15. 		for(j=0;j<cols;j++)
  16. 			printf("%d ",array[i][j]);
  17. 		printf("\n");
  18. 	}
  19. }
  20.  
  21. void arr_rev_cols(unsigned rows, unsigned cols, int **array) {
  22. 	unsigned i,j;
  23. 	int tmp;
  24. 	for(j=0;j<cols;j++) {
  25. 		for(i=0;i<rows/2;i++) {
  26. 			tmp=array[i][j];
  27. 			array[i][j] = array[rows-1-i][j];
  28. 			array[rows-1-i][j]=tmp;
  29. 		}
  30. 	}
  31. }
  32.  
  33. #define		ARR_ROWS	4
  34. #define		ARR_COLS	4
  35.  
  36. int main(void) {
  37. 	int **array;
  38. 	int i,j;
  39. 	array = malloc(sizeof(int*)*ARR_ROWS);
  40. 	for(i=0; i<ARR_ROWS; i++)
  41. 		array[i] = malloc(sizeof(int)*ARR_COLS);
  42.  
  43. 	arr_fill(ARR_ROWS,ARR_COLS,array);
  44. 	arr_print(ARR_ROWS,ARR_COLS,array);
  45. 	arr_rev_cols(ARR_ROWS,ARR_COLS,array);
  46. 	printf("\n");
  47. 	arr_print(ARR_ROWS,ARR_COLS,array);
  48. 	return 0;
  49. }
Success #stdin #stdout 0s 2428KB
comments (?)
stdin
copy 
1
2
3
4
5
6
7
8
9
0
9
8
7
6
5
4
stdout
copy 
1 2 3 4 
5 6 7 8 
9 0 9 8 
7 6 5 4 

7 6 5 4 
9 0 9 8 
5 6 7 8 
1 2 3 4
https://ideone.com/Zxgobl
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!