Pay_Roll

//Eric Johnson
//Payroll Calculator
//03-08-12
//Mr. Searing
//SUPA Computer Engineering

#include <iostream.h>
#include <iomanip.h>
#include <conio.h>
using namespace std;

void intvalid (int* data) {  //This is really ugly if implemented inside the code
while(cin.fail()) { //Input validation loop
   cin.clear();  //Clear flags
   cin.ignore();  //Clear input buffer
   cout<<"Invalid Input - Please input a number:";
   cin>>(*data);
   }
}

void flvalid (float* data) {  //For floats
while(cin.fail()) { //Input validation loop
   cin.clear();  //Clear flags
   cin.ignore();  //Clear input buffer
   cout<<"Invalid Input - Please input a number:";
   cin>>(*data);
   }
}

int main()
{
float wage;
int hours;
char employee, response;
cout << fixed << setprecision (2); //Set output format and precision
do {
   do {
      clrscr();
      cout << "Employee position?" <<endl;
      cout << "m - Manager\n" << "h - Hourly Worker\n" << "c - Commission Worker\n" << "p - Pieceworker" <<endl;
      cout << "Input:";
      cin >> employee;
      clrscr();
      //end of dowhile
      } while ((employee!='m')&&(employee!='M')&&(employee!='h')&&(employee!='H')&&(employee!='c')&&(employee!='C')&&(employee!='p')&&(employee!='P')); //Wait for valid input

   switch (employee) {  //Employee Switch

  case 'M':
  case 'm':
           clrscr();
           cout << "How many hours did you work this week? ";
           cin >> hours;
           intvalid(&hours);
           cout << "What is weekly wage? ";
           cin >> wage;
           flvalid(&wage);
           if (hours >=35)
           {cout << "This is your pay for the week: $" << hours * wage << endl;}
           else
           {cout << "this is your pay for the week: $" << (float(hours)/35)*wage << endl;}
           break;

  case 'H':
  case 'h':
           clrscr();
           cout << "Please input the number of hours worked this week: ";
           cin >> hours;
           intvalid(&hours);
           cout << "please input your hourly wage: ";
           cin >> wage;
           flvalid(&wage);
           if (hours > 40)
           {cout << "This is your weekly pay: $" << (40 * wage) + ((hours - 40)*wage*1.5) << endl;}
           else
           {cout << "This is your weekly wage: $" << hours*wage << endl;}
           break;

  case 'C':
  case 'c':
           clrscr();
           cout << "Please input your gross sales for the week: ";
           cin >> wage;
           flvalid(&wage);
           cout << "This is your pay for the week: $" << (wage*.057) + 250 << endl;
           break;

  case 'P':
  case 'p':
           clrscr();
           cout << "Please input the number of widgets assembled this week: ";
           cin >> hours;
           intvalid(&hours);
           wage += (float(hours) * 1.5);
           cout << "Please input the number of bearings assembled this week: ";
           cin >> hours;
           intvalid(&hours);
           wage += (hours * 2);
           cout << "Please input the number of transfer racks assembled this week: ";
           cin >> hours;
           intvalid(&hours);
           clrscr();
           wage += (float(hours) * 2.5);
           cout << "This is your total pay for the week: $" << wage << endl;
           break;

}          //end of switch
do {
      clrscr();
      cout << "Run again?(y/n)";
      cin >> response;
//      end of 2 do while
      } while ((response!='y')&&(response!='Y')&&(response!='n')&&(response!='N'));  //Wait for valid input
//end of 3 do while
   } while ((response=='y')||(response=='Y'));

}
}                  //end of main