Eroare de compilare: user.cpp:6:17: error: ‘int y1’ redeclared as different kind of symbol int i,n,q,x1,x2,y1,y2,pos,val,f1,f2,j,var1,var2,p,u,mij,rasp; ^ 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/iostream: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 ‘void mergebuild(int, int, int)’: user.cpp:38:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<v[f1].size()&&j<v[f2].size()) ^ user.cpp:38:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<v[f1].size()&&j<v[f2].size()) ^ user.cpp:43:10: warning: statement has no effect [-Wunused-value] for(i;i<v[f1].size();i++) v[nod].push_back(v[f1][i]); ^ user.cpp:43:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i;i<v[f1].size();i++) v[nod].push_back(v[f1][i]); ^ user.cpp:44:10: warning: statement has no effect [-Wunused-value] for(j;j<v[f2].size();j++) v[nod].push_back(v[f2][j]); ^ user.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j;j<v[f2].size();j++) v[nod].push_back(v[f2][j]); ^ user.cpp: In function ‘void query(int, int, int)’: user.cpp:63:30: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] var1=binsearch(nod,y1); ^ user.cpp:46:5: error: initializing argument 2 of ‘int binsearch(int, int)’ [-fpermissive] int binsearch(int a,int val) ^ user.cpp:65:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] if(v[nod][var1]<y1) var1++; ^ user.cpp: In function ‘int main()’: user.cpp:94:10: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ f>>x1>>y1>>x2>>y2; ^ In file included from /usr/include/c++/4.8/iostream:40:0, 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) ^