Eroare de compilare: user.cpp:7:14: error: ‘int y1’ redeclared as different kind of symbol int x1,x2,x3,y1,y2,y3,xd,yd; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iosfwd:38, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:243:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:17:11: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ fi>>x1>>y1>>x2>>y2>>x3>>y3>>xd>>yd; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:1: /usr/include/c++/4.8/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:18:34: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] if(arie(x1,y1,x2,y2,xd,yd)+arie(x1,y1,x3,y3,xd,yd)+arie(x2,y2,x3,y3,xd,yd)==arie(x1,y1,x2,y2,x3,y3)) ^ user.cpp:8:5: error: initializing argument 2 of ‘int arie(int, int, int, int, int, int)’ [-fpermissive] int arie(int x1,int y1,int x2,int y2,int x3,int y3) ^ user.cpp:18:58: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] if(arie(x1,y1,x2,y2,xd,yd)+arie(x1,y1,x3,y3,xd,yd)+arie(x2,y2,x3,y3,xd,yd)==arie(x1,y1,x2,y2,x3,y3)) ^ user.cpp:8:5: error: initializing argument 2 of ‘int arie(int, int, int, int, int, int)’ [-fpermissive] int arie(int x1,int y1,int x2,int y2,int x3,int y3) ^ user.cpp:18:107: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] if(arie(x1,y1,x2,y2,xd,yd)+arie(x1,y1,x3,y3,xd,yd)+arie(x2,y2,x3,y3,xd,yd)==arie(x1,y1,x2,y2,x3,y3)) ^ user.cpp:8:5: error: initializing argument 2 of ‘int arie(int, int, int, int, int, int)’ [-fpermissive] int arie(int x1,int y1,int x2,int y2,int x3,int y3) ^