In file included from /usr/include/c++/4.4/unordered_map:35, from spioni.cpp:3: /usr/include/c++/4.4/c++0x_warning.h:31:2: error: #error This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options. spioni.cpp:14: error: expected constructor, destructor, or type conversion before '<' token spioni.cpp: In function 'void Check(int, int)': spioni.cpp:30: error: 'mp' was not declared in this scope spioni.cpp: In function 'int main()': spioni.cpp:46: error: 'mp' was not declared in this scope spioni.cpp:67: warning: 'auto' will change meaning in C++0x; please remove it spioni.cpp:67: error: expected initializer before ':' token spioni.cpp:69: error: could not convert 'fin.std::basic_ifstream<_CharT, _Traits>::close [with _CharT = char, _Traits = std::char_traits<char>]()' to 'bool' spioni.cpp:70: error: expected ')' before ';' token