Compilare: user.c: In function ‘solve’: user.c:21:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%d", &T); ^ user.c:24:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%d\n", &N); ^ user.c:25:39: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for (j = 0; j < N; j++) fscanf(fdin, "%c", &bytes[j]); ^ user.c:27:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%c", &ch); ^ user.c:30:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%c", &ch); ^ user.c:35:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%c", &ch); ^