Eroare de compilare: user.cpp:8:13: error: ‘int y1 [30005]’ redeclared as different kind of symbol int y1[30005]; ^ In file included from /usr/include/features.h:346:0, from /usr/include/stdio.h:28, from user.cpp:1: /usr/include/bits/mathcalls.h:242:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:30:25: warning: pointer to a function used in arithmetic [-Wpointer-arith] cin>>x1[i]>>y1[i]>>x2[i]>>y2[i]; ^ user.cpp:30:12: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ cin>>x1[i]>>y1[i]>>x2[i]>>y2[i]; ^ In file included from /usr/local/include/c++/4.8.0/fstream:38:0, from user.cpp:4: /usr/local/include/c++/4.8.0/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = double(double)throw ()]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:39:33: warning: pointer to a function used in arithmetic [-Wpointer-arith] v[j][nr[j]++].x=y1[i], ^ user.cpp:39:33: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘short int’ [-fpermissive]