Question

An software company has three different promotion plans for its software purchase:

plan A: each software package is 49.99 if it is less than 50 packages.

plan B: each software package is 44.99 if it is over 50 but less than 100 packages.

plan C: each software package is 39.99 if it is over 100 packages.

In addition, the customer will pay $4.99 per package as maintenance fee. For plan A, the customer gets 5% off per package in the maintenance fee, plan B get 10% off in the maintenance fee, and plan C gets 15% off for the maintenance fee.

Write a program in C++ that

asks the user to enter the letter of the plan the customer purchased (A, or B, or C) and the number of software packages purchased. The program then should calculate and display the total charges for the software purchase (including the package cost and the maintenance fee)

Requirements:

1. use the if-else if or switch statement to check the plan

2. accept uppercase and lowercase

3. if invalid plan, set charge to 0 and display a proper message

Answer 1

If you have any doubts comment below

Code

#include <iostream>
using namespace std;
int main()
{
   char l;
   int packages;
   float total_maintanance,total_charges,total_packages_cost,maintainance_fee,package_cost,offer;
   cout<<"Enter the letter of the plan:";
   cin>>l;
   if(l=='A' || l=='a'){
       cout<<"Enter no:of packages purchased:";
       cin>>packages;
       if(packages<50)
       {
           package_cost=49.99;
           total_packages_cost = packages*package_cost; //to calculate the total packages cost
           maintainance_fee=4.99;
           offer = 4.99*((float)5/100);
           maintainance_fee = maintainance_fee - offer; //maintainance fee after applying offer
           total_maintanance= packages*maintainance_fee;
           total_charges= total_packages_cost+total_maintanance;
           cout<<"total charges= "<<total_charges;
       }
       else   {
           cout<<"package limit exceeded in this plan";
       }
   }
   else if(l=='B' || l=='b')
   {
       cout<<"Enter no:of packages purchased:";
       cin>>packages;
       //cout<<"hello";
       if(packages>=50 && packages <100)
       {
          
           package_cost=44.99;
           total_packages_cost = packages*package_cost; //to calculate the total packages cost
           maintainance_fee=4.99;
           offer = 4.99*((float)10/100);
           maintainance_fee = maintainance_fee - offer; //maintainance fee after applying offer
           total_maintanance= packages*maintainance_fee;
           total_charges= total_packages_cost+total_maintanance;
           cout<<"total charges= "<<total_charges;
       }
       else
       {
           cout<<"package limit exceeded in this plan";
       }
      
   }
   else if(l=='C' || l=='c')
   {
       cout<<"Enter no:of packages purchased:";
       cin>>packages;
       if(packages>=100)
       {
           package_cost=39.99;
           total_packages_cost = packages*package_cost; //to calculate the total packages cost
           maintainance_fee=4.99;
           offer = 4.99*((float)15/100);
           maintainance_fee = maintainance_fee - offer; //maintainance fee after applying offer
           total_maintanance= packages*maintainance_fee;
           total_charges= total_packages_cost+total_maintanance;
           cout<<"total charges= "<<total_charges;
       }
           else
       {
           cout<<"package limit exceeded in this plan";
       }
   }
   else
   {
       total_charges=0;
       cout<<"Invalid plan is selected";
   }
   return 0;
}

Output