Function Pointer

Hi,

I have a piece of code below:

//base class Employee, derive class manager, engineer, clerk
vector<Employee*>  employee_vec;

if ( strcmp( input, "manager") == 0) {
    employee_vec.push_back(new manager());
}
else if ( strcmp( input, "engineer") == 0) {
    employee_vec.push_back(new enginner());
}
else if ( strcmp( input, "clerk") == 0) {
    employee_vec.push_back(new clerk());
}

 (employee_vec[employee_vec.size() -1]) -> setSalary();
 (employee_vec[employee_vec.size() -1]) -> setJobcode();


1. I'm looking that is there any better method/new technique  that just use one/two line to replace the if/else loop?
2. Or this if/else loop is the simple yet most efficient way to do it?
3. Basically, would like to learn any new techique or more efficient way same purpose

thanks.