Eroare de compilare: user.cpp:1:2: error: stray ‘#’ in program x#include<fstream> ^ user.cpp:1:1: error: ‘x’ does not name a type x#include<fstream> ^ In file included from /usr/include/c++/4.8/bits/move.h:57:0, from /usr/include/c++/4.8/bits/stl_pair.h:59, from /usr/include/c++/4.8/bits/stl_algobase.h:64, from /usr/include/c++/4.8/vector:60, from user.cpp:2: /usr/include/c++/4.8/type_traits:285:31: error: ‘std::size_t’ has not been declared template<typename _Tp, std::size_t _Size> ^ /usr/include/c++/4.8/type_traits:419:34: error: ‘nullptr_t’ is not a member of ‘std’ struct __is_nullptr_t_helper<std::nullptr_t> ^ /usr/include/c++/4.8/type_traits:419:34: error: ‘nullptr_t’ is not a member of ‘std’ /usr/include/c++/4.8/type_traits:419:48: error: template argument 1 is invalid struct __is_nullptr_t_helper<std::nullptr_t> ^ /usr/include/c++/4.8/type_traits:1239:32: error: ‘size_t’ is not a member of ‘std’ : public integral_constant<std::size_t, __alignof__(_Tp)> { }; ^ /usr/include/c++/4.8/type_traits:1239:32: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/4.8/type_traits:1239:61: error: template argument 1 is invalid : public integral_constant<std::size_t, __alignof__(_Tp)> { }; ^ /usr/include/c++/4.8/type_traits:1239:61: note: invalid template non-type parameter /usr/include/c++/4.8/type_traits:1244:32: error: ‘size_t’ is not a member of ‘std’ : public integral_constant<std::size_t, 0> { }; ^ /usr/include/c++/4.8/type_traits:1244:32: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/4.8/type_traits:1244:46: error: template argument 1 is invalid : public integral_constant<std::size_t, 0> { }; ^ /usr/include/c++/4.8/type_traits:1244:46: note: invalid template non-type parameter /usr/include/c++/4.8/type_traits:1246:31: error: ‘std::size_t’ has not been declared template<typename _Tp, std::size_t _Size> ^ /usr/include/c++/4.8/type_traits:1248:32: error: ‘size_t’ is not a member of ‘std’ : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { }; ^ /usr/include/c++/4.8/type_traits:1248:32: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/4.8/type_traits:1248:65: error: template argument 1 is invalid : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { }; ^ /usr/include/c++/4.8/type_traits:1248:65: note: invalid template non-type parameter /usr/include/c++/4.8/type_traits:1252:32: error: ‘size_t’ is not a member of ‘std’ : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };