#include<iostream> #include <cmath> #include <iomanip> using namespace std; void

Question

#include<iostream>
#include <cmath>
#include <iomanip>

using namespace std;

void BuyCoffee1(char&, double, double, double);
void instructionrerun();
void BuyCoffee(int type,int amount);
void ShowCoffeeSold();
void ShowProfit();
int main ()
{
   char size;
   double smallCoffee=1.75;
   double mediumCoffee=1.75;
   double largeCoffee=1.75;
   double amount;
   int smallsSold=0;
   int mediumsSold=0;
   int largesSold=0;
   double profit;

   cout<<" Welcome to Jason's Coffee Shop"<<endl;

   instructionrerun();

   cout<<"Coffee Price:"<<endl;
   cout<<"Coffee Size: Small: Medium: Large:"<<endl;
   cout<<"Price of each coffee cup size:1.75:1.90:2.00"<<endl;

   BuyCoffee1(size,smallCoffee,mediumCoffee,largeCoffee);
   cout<<"Show Profit and Total COffee Sold"<<endl;
   ShowCoffeeSold();
   ShowProfit();
   return 0;
}

void instructionrerun()
{
   cout<<"Intructions"<<endl;
   cout<<"Select Coffee Cup Size"<<endl;
   cout<<"Select Number of cups"<<endl;
}
void BuyCoffee1(char& size, double smallCoffee, double mediumCoffee, double largeCoffee)
{
   double smallPrice=1.75;
   double mediumPrice=1.90;
   double largePrice=2.00;
   int smallsSold =0;
   int mediumsSold=0;
   int largesSold=0;
   double amount;
   char again,fixed,character;

   cout<<"Cup Size";
   cout<<"Small Cup"<<smallCoffee<<endl;
   cout<<"Medium Cup"<<mediumCoffee<<endl;
   cout<<"Large Cup"<<largeCoffee<<endl;

   cout<<"A for Buy Coffee"<<endl;
   cout<<"B for Show Coffee"<<endl;
   cout<<"C for Show Profit"<<endl;
   cout<<"X to skip"<<endl;
   cout<<"Enter your choice"<<endl;
   character=getchar();
   switch(character)
   {
       int type, amount;
   case'A':
       BuyCoffee(type,amount);
       break;
   case'B':
       ShowCoffeeSold();
       break;
   case'C':
       ShowProfit();
       break;
   default:
       cout<<"NO choice";
   }
}
void BuyCoffee(int type, int amount)
{
   double smallPrice=1.75;
   double mediumPrice=1.90;
   double largePrice=2.00;
   int smallsSold =0;
   int mediumsSold=0;
   int largesSold=0;
   double profit;
   cout<<"Choose a size: ";
   cout<<"1 for Small Coffee"<<endl;
   cout<<"2 for Medium Coffee"<<endl;
   cout<<"3 for Large Coffee"<<endl;
   cout<<"4 to Skip"<<endl;
   cout<<"Enter your type";
   cin>>type;
   switch(type)
   {
   case 1:
       cout<<"The size you choose is Small"<<endl;
       cout<<"How many?";
       cin>>amount;
       profit +=smallPrice*amount;
       smallsSold +=amount;
       cout<<amount<<"Small Coffee(s) brought for $"<<smallPrice *amount;
       break;
   case 2:
       cout<<"The size you choose is Medium"<<endl;
       cout<<"How many?";
       cin>>amount;
       profit +=mediumPrice*amount;
       mediumsSold +=amount;
       cout<<amount<<"Small Coffee(s) brought for $"<<mediumPrice *amount;
       break;
   case 3:
       cout<<"The size you choose is Large"<<endl;
       cout<<"How many?";
       cin>>amount;
       profit +=largePrice*amount;
       largesSold +=amount;
       cout<<amount<<"Small Coffee(s) brought for $"<<largePrice *amount;
       break;
   default:
       cout<<"no choice";
   }
   char again;

   if (amount<=0)
       cout<<endl<<"Thank You for your order";
   else
       cout<<"Would you like to add into your order(Y/N)?";
       cin>>again;
   if (again=='Y' || again =='y')
   {
       cout<<"select"<<endl;
       BuyCoffee(type, amount);
   }
   else (again == 'N'||again=='n')
   {
       cout<<"Thanks!Good Bye!";
   }
}
void ShowCoffeeSold()
{
   double smallsSold, largesSold, mediumsSold;
   cout<<"Coffee Sold";
   cout<<"TypeAmount";
   cout<<"Small "<<smallsSold<<" ";
   cout<<"Medium "<<mediumsSold<<" ";
   cout<<"Large "<<largesSold<<" ";
   cout<<"Total "<<smallsSold+largesSold+mediumsSold<<" ";
}
void ShowProfit()
{
   double smallPrice,smallsSold,mediumPrice,largePrice,
       largesSold,mediumsSold;
   cout<<"Profit";
   cout<<"Profit some small coffees:"<<smallsSold*smallPrice<<" ";
   cout<<"Profit some medium coffees:"<<mediumsSold*mediumPrice<<" ";
   cout<<"Profit some large coffees:"<<largesSold*largePrice<<" ";
   cout<<"Total Profit: "<<(smallsSold*smallPrice)+(mediumsSold*mediumPrice)+
       largesSold*largePrice);
}

Explanation / Answer

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

#define smallPrice 1.75
#define mediumPrice 1.90
#define largePrice 2.00
#define small 9
#define medium 12
#define large 15

void showInstruction();
void BuyCoffee(int& smallsSold,int& mediumsSold,int& largesSold);
void ShowCoffeeSold(int smallsSold,int mediumsSold,int largesSold);
void ShowTotalCoffee(int smallsSold,int mediumsSold,int largesSold);
void ShowProfit(int smallsSold,int mediumsSold,int largesSold);
int main ()
{
char option='y',choice='y';
int smallsSold =0;
int mediumsSold=0;
int largesSold=0;

cout<<" Welcome to Jason's Coffee Shop"<<endl;
cout<<" Please find the intructions to use the program :"<<endl;
cout<<"----------------------------------------------------"<<endl;

//Input value from user
while(choice='y'||choice=='Y'){
showInstruction();
cin>>option;
switch(option)
{
case'A':
case 'a':
BuyCoffee(smallsSold,mediumsSold,largesSold);
break;
case'B':
case 'b':
ShowCoffeeSold(smallsSold,mediumsSold,largesSold);
break;
case'C':
case 'c':
ShowTotalCoffee(smallsSold,mediumsSold,largesSold);
break;
case'D':
case 'd':
ShowProfit(smallsSold,mediumsSold,largesSold);
break;

default:
cout<<"NO choice";
}
cout<<"Would you like to add into your order(Y/N)?";
cin>>choice;
}
cout<<"Thanks!Good Bye!";
return 0;
}
void showInstruction()
{

cout<<"Input following to choose option :"<<endl;
cout<<"A - To Buy coffee in any size and in any number of cups"<<endl;
cout<<"B - To show the total number of cups of each size sold "<<endl;
cout<<"C - To show the total amount of coffee sold."<<endl;
cout<<"D - To show the total money made"<<endl;
cout<<"Input choice:"<<endl;
}

void BuyCoffee(int& smallsSold,int& mediumsSold,int& largesSold)
{
int count,type;
cout<<"Choose a coffee size to buy : "<<endl;
cout<<"1 for Small Coffee"<<endl;
cout<<"2 for Medium Coffee"<<endl;
cout<<"3 for Large Coffee"<<endl;
cout<<"4 to Skip"<<endl;
cout<<"Enter your type:";
cin>>type;

switch(type)
{
case 1:
cout<<"The size you choose is Small"<<endl;
cout<<"Enter the count :";
cin>>count;
smallsSold+=count;
break;
case 2:
cout<<"The size you choose is Medium"<<endl;
cout<<"Enter the count :";
cin>>count;
mediumsSold+=count;
break;
case 3:
cout<<"The size you choose is Large"<<endl;
cout<<"Enter the count :";
cin>>count;
largesSold+=count;
break;
default:
cout<<"No choice";
}

}
void ShowCoffeeSold(int smallsSold,int mediumsSold,int largesSold)
{
cout<<"Coffee Sold";
cout<<"TypeAmount";
cout<<"Small "<<smallsSold<<endl;
cout<<"Medium "<<mediumsSold<<endl;
cout<<"Large "<<largesSold<<endl;

}

void ShowTotalCoffee(int smallsSold,int mediumsSold,int largesSold){
cout<<"Total Amount of coffee sold "<<smallsSold+largesSold+mediumsSold<<endl;
}

void ShowProfit(int smallsSold,int mediumsSold,int largesSold)
{

cout<<"Total amount made ";
cout<<"Profit some small coffees:"<<smallsSold*smallPrice<<endl;
cout<<"Profit some medium coffees:"<<mediumsSold*mediumPrice<<endl;
cout<<"Profit some large coffees:"<<largesSold*largePrice<<endl;
cout<<"Total Profit: "<<(smallsSold*smallPrice)+(mediumsSold*mediumPrice)+(largesSold*largePrice)<<endl;
}

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