Eroare de compilare: In file included from /usr/include/c++/4.4/unordered_map:35, from user.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. user.cpp: In function ‘int main()’: user.cpp:20: error: ‘unordered_map’ was not declared in this scope user.cpp:20: error: expected primary-expression before ‘int’ user.cpp:20: error: expected ‘;’ before ‘int’ user.cpp:26: error: ‘hashB’ was not declared in this scope user.cpp:31: warning: comparison between signed and unsigned integer expressions user.cpp:33: error: expected primary-expression before ‘int’ user.cpp:33: error: expected ‘;’ before ‘int’ user.cpp:34: error: ‘hashA’ was not declared in this scope user.cpp:35: warning: comparison between signed and unsigned integer expressions user.cpp:37: error: ‘hashB’ was not declared in this scope user.cpp:10: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result