View Compilation Error

229526_0_25828.cpp: In function `int main()':
229526_0_25828.cpp:48: error: no match for 'operator>>' in '(&std::cout)->std::basic_ostream<_CharT, _Traits>::operator<< [with _CharT = char, _Traits = std::char_traits<char>](a[(k - 1l)]) >> std::endl'