This program is already posted in book section: Starting out withC++, Tony Gaddi

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This program is already posted in book section: Starting out withC++, Tony Gaddis (chapter 6 question 14PC)
You could respond as a new solution or try to fix and run thisprogram please also put the input validation for program as (Do notaccept negative number for any data) well.

#include<iostream>
#include<cmath>
using namespace std;
int out(int, int, int, int);
int in(int, int);
void main()
{
   char ans;
   int days, d_rate, service_charges, med_charges,total_charges;
   cout<<"patient admitted as an in-patientor an out-patient?";
   cout<<" Enter 'i' for in-patient and 'o'for out-patient: ";
   cin>>ans;
   if (ans=='o' || ans=='o')
   {
       cout<<"THe number ofdays spent in the hospital: ";
       cin>>days;
       while (days<0)
       {
           cout<<"ERROR: Reenter: ";
           cin>>days;
       }
       cout<<"The daily rate:";
       cin>>d_rate;
       while (d_rate<0)
       {
           cout<<"ERROR: Reenter: ";
           cin>>days;
       }
       cout<<"Charges forservices (lab tests, etc.):";
       cin>>service_charges;
       while(service_charges<0)
       {
           cout<<"ERROR: Reenter: ";
           cin>>service_charges;
       }
       cout<<"Hospitalmedication charges: ";
       cin>>med_charges;
       while (med_charges<0)
       {
           cout<<"ERROR: Reenter: ";
           cin>>med_charges;

       total_charges=out (days,d_rate, service_charges, med_charges);
       cout<<"The totalcharges of patient's hopital stay is "<<total_charges;
   }
       if (ans=='i' || ans=='I')
       {
   cout<<"Charges for services (lab tests,etc.): ";
   cin>>service_charges;
   while (service_charges<0)
   {
       cout<<"ERROR: Reenter:";
       cin>>service_charges;
   }
   cout<<"Hospital medication charges: ";
   cin>>med_charges;
   while (med_charges<0)
   {
       cout<<"ERROR: Reenter:";
       cin>>med_charges;
   }
   total_charges=in(service_charges,med_charges);
   cout<<"The total charges of patient'shospital stay is "<<total_charges<<endl;
       }
       system ("pause");
   }

int out(int a, int b, int c, int d)
       {
           returna*b+c+d;
       }
       int in(int x, int y)
       {
           returnx+y;
       }
    

Explanation / Answer

x.Xr,

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