View Compilation Error

0_0_6962387_2921.cpp: In function `int main()':
0_0_6962387_2921.cpp:9: error: no match for 'operator>' in '(&std::cin)->std::basic_istream<_CharT, _Traits>::operator>> [with _CharT = char, _Traits = std::char_traits<char>](((int&)(&a))) > (((47 >> b) >> 47) >> c)'
0_0_6962387_2921.cpp:25: error: `elsed' undeclared (first use this function)
0_0_6962387_2921.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)