Question

Program Requirements:

An Internet service provider has three different subscription
packages for its customers:

Package A: For $15 per month with 50 hours of access provided.
Additional hours are $2.00 per hour over 50 hours.
Assume usage is recorded in one-hour increments,

Package B: For $20 per month with 100 hours of access provided.
Additional hours are $1.50 per hour over 100 hours.

Package C: For $25 per month with 150 hours access is provided.
Additional hours are $1.00 per hour over 150 hours

Write a program that calculates a customer’s monthly charges.
Implement with the following functions for your solution.
getPackage
validPackage
getHours
validHours
calculatePkg_A
calculatePkg_B
calculatePkg_C
calculateCharges
showBill

----------------------------------------------
Demonstrate test cases as described in table:
---------------------------------------------- 
Test Case      Package           Hours
         1                   A                    50
         2                    a                    51
         3                    B                 100 
        4                     b                 101
        5                    C                  149
       6                      c                   151
       7                      e                  720
       8                      c                  722

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
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#include <iostream>
#include <iomanip>

using namespace std;

char getPackage();
bool validPackage(char ch);
int getHours();
bool validHours(int hrs);
double calculatePkg_A(int hours);
double calculatePkg_B(int hours);
double calculatePkg_C(int hours);
void showBill(char pack,int hours,double cost);
int main() {
  
char pack;
int hours;
double cost=0;
pack=getPackage();
hours=getHours();
if(pack=='A' || pack=='a')
{
   cost=calculatePkg_A(hours);
   }
   else if(pack=='B' || pack=='b')
{
   cost=calculatePkg_B(hours);
   }
   if(pack=='C' || pack=='c')
{
   cost=calculatePkg_C(hours);
   }
   showBill(pack,hours,cost);

return 0;
}
char getPackage()
{
   char ch;
   while(true)
   {
   cout<<"Enter package :";
   cin>>ch;
   if(validPackage(ch))  
   break;
   }
return ch;
  
}
bool validPackage(char ch)
{
   if(ch=='A' || ch=='a' || ch=='B' || ch=='b' || ch=='C' || ch=='c')
   return true;
   else
   {
       cout<<"** Invalid.Package must be either A, B or C **"<<endl;
   return false;  
   }
  
}
int getHours()
{
   int hrs;
   while(true)
   {
   cout<<"Enter hours :";
   cin>>hrs;
   if(validHours(hrs))
   break;
          
   }
   return hrs;

}
bool validHours(int hrs)
{
   if(hrs<=0)
   {
       cout<<"** Invalid.Must be > 0 **"<<endl;
       return false;
   }
   else
   {
       return true;
   }
}
double calculatePkg_A(int hours)
{
   double cost=0;
   if(hours<=50)
   {
       cost=15;
   }
   else
   {
       cost=15+2*(hours-50);
   }
   return cost;
}
double calculatePkg_B(int hours)
{
       double cost=0;
   if(hours<=100)
   {
       cost=20;
   }
   else
   {
       cost=20+1.5*(hours-100);
   }
   return cost;
}
double calculatePkg_C(int hours)
{
       double cost=0;
   if(hours<=150)
   {
       cost=25;
   }
   else
   {
       cost=25+1*(hours-150);
   }
   return cost;
}
void showBill(char pack,int hours,double cost)
{
   //setting the precision to two decimal places
   std::cout << std::setprecision(2) << std::fixed;

   cout<<"Cost :$"<<cost<<endl;
}

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Output:

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_______________Could you plz rate me well.Thank You