Compilare: user.c: In function ‘readData’: user.c:38:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s); ^ user.c:41:14: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for (fscanf(f, "%s", tmp); islower(tmp[0]); fscanf(f, "%s", tmp)) { ^ user.c:41:53: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for (fscanf(f, "%s", tmp); islower(tmp[0]); fscanf(f, "%s", tmp)) { ^ user.c: In function ‘main’: user.c:150:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.out", "w", stdout); ^