ratina.cpp: In member function 'void Solve::ReadData()': ratina.cpp:91: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result ratina.cpp:95: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result ratina.cpp: In member function 'void Solve::ReadQuery()': ratina.cpp:104: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result ratina.cpp:107: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result