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  1. #include <stdio.h>
  2. #include <malloc.h>
  3.  
  4. typedef struct
  5. {
  6.     int width;
  7.     int height;
  8.     int *buffer;
  9. } grid;
  10.  
  11. grid grid_new(int grid_width, int grid_height)
  12. {
  13.     grid p_grid;
  14.     p_grid.buffer = NULL;
  15.     if ((grid_width % 2 != 0) || (grid_height % 4 != 0))
  16.         return p_grid;
  17.  
  18.     int group_height = 4;
  19.     int group_width = 2;
  20.  
  21.     p_grid.buffer = calloc(grid_width / group_width * grid_height / group_height, sizeof(int));
  22.     p_grid.width = grid_width;
  23.     p_grid.height = grid_height;
  24.     return p_grid;
  25. }
  26.  
  27. void grid_free(grid *p_grid)
  28. {
  29.     free(p_grid->buffer);
  30.     free(p_grid);
  31. }
  32.  
  33. void grid_clear(grid *g)
  34. {
  35.     // ToDo: Iterate over all elements in the buffer
  36.     int elements = sizeof(g->buffer) / sizeof(int);
  37.     printf("Elements: %i", elements);
  38. }
  39.  
  40. int main() 
  41. {
  42. 	grid p = grid_new(16, 16);
  43. 	printf("%d %d", p.width, p.height);
  44. }
  45.  
Success #stdin #stdout 0s 4412KB
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https://ideone.com/J81ZYP
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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