Eroare de compilare: user.cpp:18:22: error: ‘int select [91][91]’ redeclared as different kind of symbol int select[NMAX][NMAX]; ^ In file included from /usr/include/sys/types.h:220:0, from /usr/include/stdlib.h:320, from /usr/local/include/c++/4.8.0/cstdlib:72, from /usr/local/include/c++/4.8.0/ext/string_conversions.h:41, from /usr/local/include/c++/4.8.0/bits/basic_string.h:2817, from /usr/local/include/c++/4.8.0/string:52, from /usr/local/include/c++/4.8.0/bits/locale_classes.h:40, from /usr/local/include/c++/4.8.0/bits/ios_base.h:41, from /usr/local/include/c++/4.8.0/ios:42, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/include/sys/select.h:109:12: error: previous declaration of ‘int select(int, fd_set*, fd_set*, fd_set*, timeval*)’ extern int select (int __nfds, fd_set *__restrict __readfds, ^ user.cpp: In function ‘void back(int, int, int, int, int)’: user.cpp:58:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<graf[x].size(); i++) ^ user.cpp:61:25: warning: pointer to a function used in arithmetic [-Wpointer-arith] if (select[x][vecin] == 0) ^ user.cpp:61:32: warning: pointer to a function used in arithmetic [-Wpointer-arith] if (select[x][vecin] == 0) ^ user.cpp:63:25: warning: pointer to a function used in arithmetic [-Wpointer-arith] select[x][vecin] = pos; ^ user.cpp:63:32: warning: pointer to a function used in arithmetic [-Wpointer-arith] select[x][vecin] = pos; ^ user.cpp:63:34: error: assignment of read-only location ‘*(select + (((sizetype)x) + ((sizetype)vecin)))’ select[x][vecin] = pos; ^ user.cpp:63:34: error: cannot convert ‘int’ to ‘int(int, fd_set*, fd_set*, fd_set*, timeval*)’ in assignment user.cpp:64:29: warning: pointer to a function used in arithmetic [-Wpointer-arith] select[vecin][x] = pos; ^ user.cpp:64:32: warning: pointer to a function used in arithmetic [-Wpointer-arith] select[vecin][x] = pos; ^ user.cpp:64:34: error: assignment of read-only location ‘*(select + (((sizetype)vecin) + ((sizetype)x)))’ select[vecin][x] = pos; ^ user.cpp:64:34: error: cannot convert ‘int’ to ‘int(int, fd_set*, fd_set*, fd_set*, timeval*)’ in assignment user.cpp:69:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<x_vecini.size(); i++)