Compilare: main.cpp: In function 'int verif(double)': main.cpp:92:32: warning: variable 'x' set but not used [-Wunused-but-set-variable] pair <double, double > x = make_pair (v[i].first*1.0, v[i].second*1.0); ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:17:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^