Compilare: user.cpp: In function ‘void read()’: user.cpp:38:61: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &nr_of_floors, &nr_of_occupied_rooms); ^ user.cpp:40:55: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &k_start, &r_start, &c_start); ^ user.cpp:43:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &k_finish, &r_finish, &c_finish); ^ user.cpp:48:83: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &k_occupied_room, &r_occupied_room, &c_occupied_room); ^