Помогите кто может с задачкой!!!

Есть такая С++ задачка:

"The firm uses for it's payroll calculations a number of different paying schemes. Manager who receive a fixed weekly salary, hourly workers that receive a fixed hourly wage for up to the first 40 hours they work and 1.5 times their hourly wage for overtime worked, commission workers that receive 250$ plus 5.7% of their gross weekly sales and finally pieceworkers that receive a fixed amount of money per item they produce.
The number of employees is not known in advance."

Все что сумел:

#include<iostream>

using namespace std;
int main()

{
char typeofemployee;
float hoursworked;
int grossweeklysales;
int piecesprodused;

cout<< " Hello user of XYZ Inc." <<endl;
cout<< " 1=manager"<<endl;
cout<< " 2=hourly workers" <<endl;
cout<< " 3=commission workers" <<endl;
cout<< " 4=pieceworkers" <<endl;

while (typeofemployee>=1 && typeofemployee <=4);

{
cout<< "type of employee" <<endl;
cin>> typeofemployee;

if ( typeofemployee=1)

{
cout<< "fix salary = 1000E" <<endl;

if ( typeofemployee=2)

{
cout<< "how many hours worked" <<endl;
cin>> hoursworked;
}

if (hoursworked<=40)

{
cout<<"30*hours worked";


else

cout<<(30*hoursworkes)+1.5*(hoursworked-40) <<endl;
}
if ( typeofemployee=3)

{
cout<< "how many gross weekly sales" <<endl;
cin>> grossweeklysales;
сout<< 250 + 5.7*(grossweeklysales);
}

else
cout<< "how many piece prodused" <<endl;
cin>> piecesprodused;
cout<< piecesprodused*20 <<endl;
}

if
cout<<"wrong message" <<endl;
}

return 0;

}

Помогите кто может !!!
Заранее спасибо !!!