Eroare de compilare: user.cpp:8:12: error: ‘char rand [105]’ redeclared as different kind of symbol char rand[N]; ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:380:12: error: previous declaration of ‘int rand()’ extern int rand (void) __THROW; ^ user.cpp: In function ‘int main()’: user.cpp:39:31: error: no matching function for call to ‘std::basic_ifstream<char>::getline(int (&)()throw (), const int&, char)’ in.getline(rand,N,'\n'); ^ user.cpp:39:31: note: candidates are: In file included from /usr/include/c++/4.8/fstream:38:0, 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: no known conversion for argument 1 from ‘int()throw ()’ to ‘std::basic_istream<char>::char_type* {aka char*}’ /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: candidate expects 2 arguments, 3 provided user.cpp:41:22: warning: pointer to a function used in arithmetic [-Wpointer-arith] if(rand[j]=='X') ^ user.cpp:41:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] if(rand[j]=='X') ^ user.cpp:43:27: warning: pointer to a function used in arithmetic [-Wpointer-arith] else if(rand[j]=='R'){ ^ user.cpp:43:30: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] else if(rand[j]=='R'){ ^ user.cpp:47:27: warning: pointer to a function used in arithmetic [-Wpointer-arith] else if(rand[j]=='J'){ ^ user.cpp:47:30: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] else if(rand[j]=='J'){ ^ user.cpp:35:10: warning: unused variable ‘x’ [-Wunused-variable]