View Compilation Error

584511_0_0_9594.cpp: In function `int main()':
584511_0_0_9594.cpp:19: error: invalid conversion from `char' to `const char*'
584511_0_0_9594.cpp:19: error:   initializing argument 1 of `std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, const _Alloc&) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]'