Question

In C++,

using: juiceMachine.h, juiceMachineImp.cpp, main.pp as your file names

The method sellProduct of the Juice Machine programming example gives the user only two chances to enter enough money to buy the product. Rewrite the definition of the method sellProduct so that it keeps prompting the user to enter more money as long as the user has not entered enough money to buy the product. Also, write a program to test your method.

Your program should produce the following output:

 *** Welcome to Shelly's Juice Shop ***                               
To select an item, enter                                             
1 for orange juice (50 cents)                                        
2 for apple juice (65 cents)                                         
3 for mango juice (80 cents)                                         
4 for strawberry banana juice (85 cents)                             
9 to exit                                                            
3                                                                    
Please deposit 80 cents                                              
40                                                                   
Please deposit another 40 cents.                                     
40                                                                   
Collect your item at the bottom and enjoy.                           
*** Welcome to Shelly's Juice Shop ***                               
To select an item, enter                                             
1 for orange juice (50 cents)                                        
2 for apple juice (65 cents)                                         
3 for mango juice (80 cents)                                         
4 for strawberry banana juice (85 cents)                             
9 to exit                                                            
9 

Answer 1

Code;

#include<iostream>
using namespace std;
//Redefined function
void sellProduct()
{
   int i,m,extram,choice;
   do{
       cout<<" *** Welcome to Shelly's Juice Shop ***\nTo select an item, enter\n1 for orange juice (50 cents)\n2 for apple juice (65 cents)\n3 for mango juice (80 cents)\n4 for strawberry banana juice (85 cents)\n9 to exit\n";
       cin>>choice;
       if(choice==1)
       {
           cout<<"Please deposit 50 cents:\n";
           cin>>m;
           while(m!=50&&m<50)
           {
               cout<<"Please deposit another "<<50-m<<" cents:";
               cin>>extram;
               m=m+extram;
           }
           cout<<"Collect your item at the bottom and enjoy:\n";
       }
       else if(choice==2)
       {
           cout<<"Please deposit 65 cents:\n";
           cin>>m;
           while(m!=65&&m<65)
           {
               cout<<"Please deposit another "<<65-m<<" cents:";
               cin>>extram;
               m=m+extram;
           }
           cout<<"Collect your item at the bottom and enjoy\n";
       }
       else if(choice==3)
       {
           cout<<"Please deposit 80 cents:\n";
           cin>>m;
           while(m!=80&&m<80)
           {
               cout<<"Please deposit another "<<80-m<<" cents:";
               cin>>extram;
               m=m+extram;
           }
           cout<<"Collect your item at the bottom and enjoy\n";
       }
       else if(choice==4)
       {
           cout<<"Please deposit 85 cents:\n";
           cin>>m;
           while(m!=85&&m<85)
           {
               cout<<"Please deposit another "<<85-m<<" cents:";
               cin>>extram;
               m=m+extram;
           }
           cout<<"Collect your item at the bottom and enjoy\n";
       }
      
   }while(choice!=9);
}
//Driver program
int main()
{
   sellProduct();
   return 0;
}

Output:

Bro, please comment if want any modifications or if you've any doubt...