View Compilation Error

0_0_6090926_25615.cpp: In function `int main()':
0_0_6090926_25615.cpp:9: error: no match for 'operator<' in '(&std::cout)->std::basic_ostream<_CharT, _Traits>::operator<< [with _CharT = char, _Traits = std::char_traits<char>](a[(n - 1)]) < std::endl'