Eroare de compilare: user.cpp:7:30: error: ‘int y1’ redeclared as different kind of symbol int a,b,N,i,j,x1,x2,k,y2,x,y,y1,c,nrz,sol,v[220][220],V[220][220]; ^ 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:50:10: 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>>c; ^ 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:52:18: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] for(j=y1;j<y2;++j) V[j+y][i+x]=c; ^ user.cpp:53:14: warning: pointer to a function used in arithmetic [-Wpointer-arith] v[y1+y][x1+x]++; ^ user.cpp:53:15: error: invalid types ‘int [220][220][double (*)(double)throw ()]’ for array subscript v[y1+y][x1+x]++; ^ user.cpp:56:14: warning: pointer to a function used in arithmetic [-Wpointer-arith] v[y1+y][x2+x+1]--; ^ user.cpp:56:15: error: invalid types ‘int [220][220][double (*)(double)throw ()]’ for array subscript v[y1+y][x2+x+1]--; ^