View Compilation Error

0_0_4728766_10233.cpp: In function `int main()':
0_0_4728766_10233.cpp:11: error: no match for 'operator!=' in 'std::getline [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>](((std::basic_istream<char, std::char_traits<char> >&)(&std::cin)), ((std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)(&str))) != -0x000000001'