Question

<Program 1: 50 points> software.cpp A software company sells a package that retails for $99. Quantity discounts are given according to the following table. Quantity Discount 10-19 20% 20-49 30% 50-99 40% 100 or more 50% Write a program that asks for today's date (you MUST use cin >> date. Do not use getline(cin, date)), the company name and the quantity they wish to buy and computes the total cost of the purchase. If the user enters a negative value for the quantity, tell him/her "invalid quantity". If a zero is entered, tell "Hope you decide to buy our software in the future." Otherwise display an invoice in the same format shown below. Your prompts and outputs have to look exactly the same as the following sample run (spacing too). I used 30 spaces for the labels and 10 spaces for the numbers. [kslott@empress cs111_lec_fall16]$ ./a.out Enter today's date (mm/dd/yy): 09/27/16 Enter your company name: Little Coffee Shop Enter the quantity you would like to purchase: 10 Invoice for Little Coffee Shop Price before discount 990.00 Discount 198.00 Total Due 792.00 [kslott@empress cs111_lec_fall16]$ For this program, you need to make up your own test cases using the boundary checking

Answer 1

/************************software.cpp**********************/

#include<iostream>
#include<string>
using namespace std;

int main(){
  
   const float PACKAGE_RATE = 99.00;//decalre constant for Package rate
   string date,companyName; //for date and company name
   int quantity; //for quantityt
   float grossPay = 0,total = 0,discount = 0,discountRate = 0;//calculation
   //prompt
   cout<<"Enter today's date (mm/dd/yy): ";
   cin>>date;
   cout<<"Enter your compay name: ";
   cin>>companyName;
   getline(cin,companyName); //company name
   cout<<"Enter the quantity you would like to purchase: ";
   cin>>quantity;
   /*
   * condition for discount and validation
   *
   */
   if(quantity<0){
      
       cout<<"Invalid quantity";
       exit(0);
   }
   else if(quantity==0){
      
       cout<<"Hope you decide to buy our software in future.";
       exit(0);
   }
   else if(quantity<10){
      
       discountRate = 0;
   }
   else if(quantity>=10&&quantity<20){
      
       discountRate = 20;
   }
   else if(quantity>=20&&quantity<50){
      
       discountRate = 30;
   }
   else if(quantity>=50&&quantity<100){
      
       discountRate = 40;
   }
   else if(quantity>50){
      
       discountRate = 50;
   }
   //calculation
   grossPay = quantity * PACKAGE_RATE;
   discount = grossPay * discountRate/100;
   total = grossPay - discount;
   //display invoice
   cout<<"Invoice for "<<companyName<<endl;
   cout<<"Price before discount\t\t$\t"<<grossPay<<endl;
   cout<<"Discount\t\t\t$\t"<<discount<<endl;
   cout<<"Total Due\t\t\t$\t"<<total<<endl;
  
   return 0;
  
}

/**********************output*********************/

Enter today's date (mm/dd/yy): 09/27/16
Enter your compay name: Little Coffee Shop
Enter the quantity you would like to purchase: 10
Invoice for Coffee Shop
Price before discount $ 990
Discount $ 198
Total Due $ 792

--------------------------------
Process exited after 23.34 seconds with return value 0
Press any key to continue . . .

Select D:\Chegg-workspace software.exe Enter today's date (mm/dd/yy): 09/27/16 Enter your compay name: Little Coffee Shop Enter the quantity you would like to purchase: 10 Invoice for Coffee Shop Price before discount 990 Discount 198 Total Due 792 tA A TA Process exited after 23.34 seconds with return value o Press any key to continue ...

Please let me know if you have any doubt or modify the answer, Thanks :)