View Compilation Error

0_0_30423347_8550.cpp: In function 'int main()':
0_0_30423347_8550.cpp:29:5: error: incomplete type 'std::ios {aka std::basic_ios<char>}' used in nested name specifier
     ios::sync_with_stdio(false);
     ^
0_0_30423347_8550.cpp:31:5: error: 'cin' was not declared in this scope
     cin >> T;
     ^
0_0_30423347_8550.cpp:48:9: error: 'cout' was not declared in this scope
         cout << tp << endl;
         ^
0_0_30423347_8550.cpp:48:23: error: 'endl' was not declared in this scope
         cout << tp << endl;
                       ^