Eroare de compilare: user.cpp:11: error: type/value mismatch at argument 1 in template parameter list for ‘template<class _Tp, class _Sequence> class std::stack’ user.cpp:11: error: expected a type, got ‘pair’ user.cpp:11: error: template argument 2 is invalid user.cpp:11: error: invalid type in declaration before ‘;’ token user.cpp: In function ‘int size(Per)’: user.cpp:18: error: ‘v’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:25: error: ‘v’ was not declared in this scope user.cpp:28: error: ‘nr’ was not declared in this scope user.cpp:29: error: ‘nr’ was not declared in this scope user.cpp:29: error: ‘cmp’ was not declared in this scope user.cpp:29: error: ‘sort’ was not declared in this scope user.cpp:35: error: request for member ‘push’ in ‘S’, which is of non-class type ‘int’ user.cpp:38: error: ‘proc’ was not declared in this scope user.cpp:40: error: ‘query’ was not declared in this scope