Eroare de compilare: user.cpp:7:19: error: ‘int y1’ redeclared as different kind of symbol int n,q,i,j,x1,x2,y1,y2,suma,lg,sol,s[N][N],l[N][N],a[N][N],v[N]; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/iosfwd:38, from /usr/local/include/c++/4.8.0/ios:38, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, 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:20:10: 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/local/include/c++/4.8.0/fstream:38:0, from user.cpp:1: /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:21:15: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator-’ lg=y2-y1+1; ^ user.cpp:22:35: warning: pointer to a function used in arithmetic [-Wpointer-arith] suma=s[x2][y2]+s[x1-1][y1-1]-s[x2][y1-1]-s[x1-1][y2]; ^ user.cpp:22:36: error: invalid types ‘int [310][double (*)(double)throw ()]’ for array subscript suma=s[x2][y2]+s[x1-1][y1-1]-s[x2][y1-1]-s[x1-1][y2]; ^ user.cpp:22:47: warning: pointer to a function used in arithmetic [-Wpointer-arith] suma=s[x2][y2]+s[x1-1][y1-1]-s[x2][y1-1]-s[x1-1][y2]; ^ user.cpp:22:48: error: invalid types ‘int [310][double (*)(double)throw ()]’ for array subscript suma=s[x2][y2]+s[x1-1][y1-1]-s[x2][y1-1]-s[x1-1][y2]; ^ user.cpp:30:38: warning: pointer to a function used in arithmetic [-Wpointer-arith] v[i]=lg-l[i][y2]-l[i][y1-1]; ^ user.cpp:30:39: error: invalid types ‘int [310][double (*)(double)throw ()]’ for array subscript v[i]=lg-l[i][y2]-l[i][y1-1]; ^