Eroare de compilare: user.cpp:8:16: error: ‘char exp [100001]’ redeclared as different kind of symbol char exp[100001]; ^ 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:101:1: error: previous declaration of ‘double exp(double)’ __MATHCALL (exp,, (_Mdouble_ __x)); ^ user.cpp: In function ‘int expresie()’: user.cpp:20:18: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript while ((exp[p]=='M') || (exp[p]=='m')) ^ user.cpp:20:35: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript while ((exp[p]=='M') || (exp[p]=='m')) ^ user.cpp:22:17: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript if(exp[p]=='m') { ^ user.cpp:26:17: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript if(exp[p]=='M'){ ^ user.cpp: In function ‘int factor()’: user.cpp:39:14: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript if (exp[p]=='(') ^ user.cpp:47:25: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript while (isdigit(exp[p])) ^ user.cpp:49:26: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript val=val*10+(exp[p]-'0'); ^ user.cpp: In function ‘int main()’: user.cpp:57:26: error: no matching function for call to ‘std::basic_ifstream<char>::getline(<unresolved overloaded function type>, int)’ f.getline(exp,1000001); ^ user.cpp:57:26: note: candidates are: In file included from /usr/include/c++/4.8/iostream:40:0, from user.cpp:1: /usr/include/c++/4.8/istream:618:5: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::getline(std::basic_istream<_CharT, _Traits>::char_type*, std::streamsize, std::basic_istream<_CharT, _Traits>::char_type) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::char_type = char; std::streamsize = int] basic_istream<char>:: ^ /usr/include/c++/4.8/istream:618:5: note: candidate expects 3 arguments, 2 provided /usr/include/c++/4.8/istream:427:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::getline(std::basic_istream<_CharT, _Traits>::char_type*, std::streamsize) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::char_type = char; std::streamsize = int] getline(char_type* __s, streamsize __n) ^ /usr/include/c++/4.8/istream:427:7: note: no known conversion for argument 1 from ‘<unresolved overloaded function type>’ to ‘std::basic_istream<char>::char_type* {aka char*}’