Question

C++ question:

Jason opened a coffee shop selling coffee, cheese cakes, and coffee beans. Coffee is sold at the shop in two sizes: small (9 oz, $1.5) and large (12 oz, $1.9). Cheese cakes cost $3 per slice. Coffee beans are sold with $0.6 per oz. Write a menu-driven program that will make the coffee shop operational.

Your program should allow the user to do the following:

Choose among coffee, cakes, or beans to purchase.

Buy coffee in any size and in any number of cups.

Buy cheese cakes in any number of slices.

Buy coffee beans in any amount.

At any time show the total number of cups of each size sold, total number of slices of cakes sold, and total amount of coffee beans sold.

At any time show the total amount of coffee sold.

At any time show the total money made.

Your program should consist of at least the following functions:

a function to show the user how to use the program,

a function to sell coffee,

a function to sell cakes,

a function to sell coffee beans,

a function to show the number of cups of each size of coffee, the number of slices of cheese cakes, and the amount of coffee beans sold,

a function to show the total amount of coffee sold,

a function to show the total money made.

Your program should not use any global variables. Special values such as coffee cup sizes and cost of a coffee cup must be declared as named constants.

Answer 1

#include<iostream>

#include<cstdlib>

using namespace std;

//giving items types in structure it is not declaration items declared in use_program() function below

struct item{

       float money;

       int n9coffee;

       int n12coffee;

       int ncake;

       int nbeans;

};

//function for sell coffee

item sell_coffee(item t){

   int a,n;

   cout<<"Enter 1 for 9oz\t2 for 12 oz"<<endl;           //choose type of coffee 9oz or 12oz

   cin>>a;

   while(a!=1&&a!=2){

       cout<<"Invalid choice try again"<<endl;

       cin>>a;

   }

   cout<<"Enter how many Coffee you want to buy"<<endl;

   cin>>n;

   //calculating money for 9oz coffee

   if(a==1){

       t.n9coffee+=n;

       t.money+=(float)n*1.5;

   }

   //calculating money for 12oz coffee

   else{

       t.n12coffee+=n;

       t.money+=(float)n*1.9;

   }

   return t;       //return the structure

}

//function for sell cake

item sell_cake(item t)       {

   int n;

   cout<<"Enter how many Cake Slices you want to buy"<<endl;

   cin>>n;

   t.ncake+=n;

   t.money+=(float)n*3;   //calculating money for cake

   return t;       //return the structure

}

//function for sell coffee beans

item sell_coffee_beans(item t) {

   int n;

   cout<<"Enter how much oz's you want to buy"<<endl;

   cin>>n;

   t.nbeans+=n;

   t.money+=(float)n*0.6;       //calculating money for coffee beans

   return t;       //return the structure

}

//function for printing number of items sold

void sold(item t){

   cout<<"Number of sold Items"<<endl;

   cout<<"Coffee 9oz\t"<<t.n9coffee<<endl;       //printing coffee 9oz

   cout<<"Coffee 12oz\t"<<t.n12coffee<<endl;   //printing coffee 12oz

   cout<<"Chese Cake\t"<<t.ncake<<endl;       //printing cake

   cout<<"Coffee Beans\t"<<t.nbeans<<endl;       //printing coffee beans

}

//function for money earned

void total_money(item t) {

   cout<<"Total Money earned is : "<<t.money<<endl;

}

int main(){

   int ch;

   item t;       //declaring structure item means that declaring all variables

   t.money=0;   //initilizing all items to 0 initially

   t.n9coffee=0;

   t.n12coffee=0;

   t.ncake=0;

   t.nbeans=0;

   while(1){

       cout<<endl;

       cout<<"COFFEE shop MENU\n1.Buy Coffee\n2.Buy Cake\n3.Buy Coffee Beans\n4.Show total sold\n5.Show total Money earned\n6.Quit"<<endl;

       cout<<"Enter Your Choice"<<endl;

       cin>>ch;

       switch(ch){

           case 1:t=sell_coffee(t);   //call for sell coffee

               break;

           case 2:t=sell_cake(t);       //call for sell cake

               break;

           case 3:t=sell_coffee_beans(t);   //call for sell coffee beans

               break;

           case 4:sold(t);       //call for items sold

               break;

           case 5:total_money(t);   //call for money earned

               break;

           case 6:exit(0);

           default: cout<<"Invalid Choice try again"<<endl;

       }

   }

   return 0;

}

Output: