/in/call.cpp:16:5: error: unknown type name 'string'; did you mean 'std::string'?
    string name;
    ^~~~~~
    std::string
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/bits/stringfwd.h:74:33: note: 'std::string' declared here
  typedef basic_string<char>    string;   
                                ^
/in/call.cpp:34:5: error: use of undeclared identifier 'cin'; did you mean 'std::cin'?
    cin>>num;
    ^~~
    std::cin
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/iostream:60:18: note: 'std::cin' declared here
  extern istream cin;           /// Linked to standard input
                 ^
/in/call.cpp:38:9: error: unknown type name 'string'; did you mean 'std::string'?
        string str_status;
        ^~~~~~
        std::string
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/bits/stringfwd.h:74:33: note: 'std::string' declared here
  typedef basic_string<char>    string;   
                                ^
/in/call.cpp:39:9: error: use of undeclared identifier 'cin'; did you mean 'std::cin'?
        cin>>c->timestamp>>c->name>>str_status>>c->duration;
        ^~~
        std::cin
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/iostream:60:18: note: 'std::cin' declared here
  extern istream cin;           /// Linked to standard input
                 ^
/in/call.cpp:68:9: error: use of undeclared identifier 'cout'; did you mean 'std::cout'?
        cout<<"Starting tick #"<<tick<<endl;
        ^~~~
        std::cout
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/iostream:61:18: note: 'std::cout' declared here
  extern ostream cout;          /// Linked to standard output
                 ^
/in/call.cpp:68:40: error: use of undeclared identifier 'endl'; did you mean 'std::endl'?
        cout<<"Starting tick #"<<tick<<endl;
                                       ^~~~
                                       std::endl
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/ostream:590:5: note: 'std::endl' declared here
    endl(basic_ostream<_CharT, _Traits>& __os)
    ^
/in/call.cpp:73:9: error: use of undeclared identifier 'cout'; did you mean 'std::cout'?
        cout<<"Starting tick #"<<tick<<endl;
        ^~~~
        std::cout
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/iostream:61:18: note: 'std::cout' declared here
  extern ostream cout;          /// Linked to standard output
                 ^
/in/call.cpp:73:40: error: use of undeclared identifier 'endl'; did you mean 'std::endl'?
        cout<<"Starting tick #"<<tick<<endl;
                                       ^~~~
                                       std::endl
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/ostream:590:5: note: 'std::endl' declared here
    endl(basic_ostream<_CharT, _Traits>& __os)
    ^
/in/call.cpp:94:21: error: use of undeclared identifier 'cout'; did you mean 'std::cout'?
                    cout << "Call from " << client->name << " a " << Status[client->status] << " member" << endl;
                    ^~~~
                    std::cout
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/iostream:61:18: note: 'std::cout' declared here
  extern ostream cout;          /// Linked to standard output
                 ^
/in/call.cpp:94:109: error: use of undeclared identifier 'endl'; did you mean 'std::endl'?
                    cout << "Call from " << client->name << " a " << Status[client->status] << " member" << endl;
                                                                                                            ^~~~
                                                                                                            std::endl
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/ostream:590:5: note: 'std::endl' declared here
    endl(basic_ostream<_CharT, _Traits>& __os)
    ^
/in/call.cpp:121:13: error: use of undeclared identifier 'cout'; did you mean 'std::cout'?
            cout<<"Answering call from "<<client->name<<endl;
            ^~~~
            std::cout
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/iostream:61:18: note: 'std::cout' declared here
  extern ostream cout;          /// Linked to standard output
                 ^
/in/call.cpp:121:57: error: use of undeclared identifier 'endl'; did you mean 'std::endl'?
            cout<<"Answering call from "<<client->name<<endl;
                                                        ^~~~
                                                        std::endl
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/ostream:590:5: note: 'std::endl' declared here
    endl(basic_ostream<_CharT, _Traits>& __os)
    ^
12 errors generated.
/in/Compile/Makefile:39: recipe for target 'buildCall' failed
make: *** [buildCall] Error 1