Eroare de compilare: user.cpp:34:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:20: warning: comparison between signed and unsigned integer expressions user.cpp:22: warning: comparison between signed and unsigned integer expressions user.cpp:31: error: conversion from '__gnu_cxx::__normal_iterator<char*, std::vector<char, std::allocator<char> > >' to non-scalar type 'std::vector<char, std::allocator<char> >' requested user.cpp:31: error: no match for 'operator!=' in 'it != c.std::vector<_Tp, _Alloc>::end [with _Tp = char, _Alloc = std::allocator<char>]()' user.cpp:31: error: no 'operator++(int)' declared for postfix '++', trying prefix operator instead user.cpp:31: error: no match for 'operator++' in '++it' user.cpp:32: error: no match for 'operator*' in '*it'