Eroare de compilare: user.cpp:12:93: error: ‘int y1’ redeclared as different kind of symbol int ok,pas,q[2][400004],a[202][202],dx[]={0,1,0,-1,0},dy[]={0,0,1,0,-1},n,m,k,y,xc,yc,nr,x1,y1,x2,y2,X,Y,p,u,vv,r,i,j,x,t,b[202][202],c[202][202]; ^ 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:54:6: 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/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:55:16: error: invalid types ‘int [202][double(double)throw ()]’ for array subscript if(c[x1][y1]==0){ ^ user.cpp:56:17: error: invalid types ‘int [202][double(double)throw ()]’ for array subscript c[x1][y1]=++nr; ^ user.cpp:58:17: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] v[nr].yy=y1;} ^ user.cpp:63:15: error: invalid types ‘int [202][double(double)throw ()]’ for array subscript G[c[x1][y1]].push_back(c[x2][y2]); ^ user.cpp:64:36: error: invalid types ‘int [202][double(double)throw ()]’ for array subscript G[c[x2][y2]].push_back(c[x1][y1]); ^ user.cpp:65:16: error: invalid types ‘int [202][double(double)throw ()]’ for array subscript if(a[x1][y1]!=-1) ^ user.cpp:66:13: error: invalid types ‘int [202][double(double)throw ()]’ for array subscript a[x1][y1]=-2; ^