Question

C++ Instructions

Redo Exercise 4 so that the customer can select multiple items of a particular type. A sample output in this case is:

Welcome to Johnny's Resturant                                        
----Today's Menu----                                                 
1: Plain Egg       $1.45                                             
2: Bacon and Egg   $2.45                                             
3: Muffin          $0.99                                             
4: French Toast    $1.99                                             
5: Fruit Basket    $2.49                                             
6: Cereal          $0.69                                             
7: Coffee          $0.50                                             
8: Tea             $0.75                                             

You can make up to 8 different selections                            
Do you want to make selection Y/y (Yes), N/n (No): Y                 

Enter item number: 1                                                 

How many orders: 3                                                   

Select another item Y/y (Yes), N/n (No): Y                           

Enter item number: 8                                                 

How many orders: 1                                                   

Select another item Y/y (Yes), N/n (No): N                           

Welcome to Johnny's Resturant                                        
3 Plain Egg       $4.35                                              
1 Tea             $0.75                                              
  Tax             $0.26                                              
  Amount Due      $5.35  

Answer 1

Thanks for the question. Below is the code you will be needing. Let me know if you have any doubts or if you need anything to change.

If you are satisfied with the solution, please rate the answer.

Thank You !

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

void displayMenu(){
   cout<<"Welcome to Johnny\'s Resturant\n";
   cout<<"---- Today\'s Menu ----\n";
   cout<<"1. Plain Egg $1.45\n";
   cout<<"2. Bacon and Egg $2.45\n";
   cout<<"3. Muffin $0.99\n";
   cout<<"4. French Toast $1.99\n";
   cout<<"5. Fruit Basket $2.49\n";
   cout<<"6. Cereal $0.69\n";
   cout<<"7. Coffee $0.50\n";
   cout<<"8. Tea $0.75\n";
   cout<<"You can make up to 8 different selections\n";

}

char getChoice(string message){
   char choice;
   do{
       cout<<message;
       cin>>choice;
   }while (!(choice=='y' || choice=='Y' || choice=='n' || choice =='N'));
   if(choice=='y')return 'Y';
   else if(choice=='n') return 'N';
   else return choice;
}

int getItemNumber(){
   int itemNumber;
   do{
       cout<<"Enter item number: "; cin>>itemNumber;
      
   }while(1>itemNumber || itemNumber>8);
   return itemNumber;
}

int getOrderCount(){
   int orders;
   do{
       cout<<"How many orders: "; cin>>orders;
      
   }while(1>orders );
   return orders;
}

int main(){
  
   double itemPrice[8] ={1.45,2.45,0.99,1.99,2.49,0.69,0.50,0.75};
   string itemNames[] ={"Plain Egg","Bacon and Egg","Muffin","French Toast",
                           "Fruit Basket", "Cereal", "Coffee", "Tea"
                       };
   int orders[8]={0};
   const double TAX_RATE_ = 0.051;
   char choice;
   int itemNumber=0, order=0;
   displayMenu();
   string message = "Do you want to make selection Y/y (Yes), N/n (No): ";
   do{
       choice = getChoice(message);
       if(choice=='Y'){
           message = "Select another item Y/y (Yes), N/n (No): ";
           itemNumber = getItemNumber();
           order = getOrderCount();
           orders[itemNumber-1]+=order;
       }
   }while(choice!='N');
  
   double totalAmount = 0.0;
   cout<<"Welcome to Johnny's Resturant \n";
   for(int index=0 ; index < 8; index ++){
       totalAmount += orders[index]*itemPrice[index];
       if(orders[index]>0) {
           cout<<orders[index]<<" "<<setw(15)<<left<<itemNames[index]<<" "<<"$"<<setprecision(2)<<setw(10)<<fixed
               <<orders[index]*itemPrice[index]<<endl;
       }
   }
   cout<<setw(18)<<left<<" Tax"<<"$"<<setprecision(2)<<setw(10)<<fixed<<TAX_RATE_*totalAmount<<endl;
   cout<<setw(18)<<left<<" Amount Due"<<"$"<<setprecision(2)<<setw(10)<<fixed<<(TAX_RATE_+1)*totalAmount<<endl;
  
}

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