Compilare: user.c: In function ‘flash_sort’: user.c:38:41: warning: variable ‘right_low’ set but not used [-Wunused-but-set-variable] int left, left_low, left_high, right, right_low, right_high; ^ user.c:38:23: warning: variable ‘left_high’ set but not used [-Wunused-but-set-variable] int left, left_low, left_high, right, right_low, right_high; ^ user.c: In function ‘read_input’: user.c:25:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d\n", size); ^ user.c:30:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d", *list + index); ^