Question

Objective:

Create a program that has a class to represent a cup of coffee that combines the properties: name and caffeine content. The class should also have a method that calculates the number of cups that would be maximally risky to consume in a short period of time. The program should create two instances of the class coffee where the user enters their properties and should output the amount of coffees that consumed would be risky.

Requirements:

Write a class called Coffee with the following

• Instance Variables
  • Name
  • Caffeine content. Coffee is around 50 to 300mg of caffeine
• Methods
  • Accessors and Mutators for the instance variables
    • Make sure in the mutator for the caffeine content contains a check to make sure the value is between 50 and 300 inclusively
  • RiskyAmount
    • Calculates the number of coffee’s to before it would be dangerous to consume more within a short time frame, and it is based on this formula:
      
      cups amount = 180.0/((caffeine content / 100.0)*6.0)
      
    • Returns the number of coffees it would take before they could be at a health risk.

Next write a test class

• Contains a main method
• Creates two instances of the type Coffee
• Have the user enter in the names and caffeine contents for both
• Print out the results

Answer 1

HERE IS THE CODE FOR THE COFFEE PROGRAM AS IT LOOKS IN MY SYSTEM :--

THE ORGINAL CODE THAT YOU CAN COPY DOWN AND TRY ON YOUR SYSTEM :--

#include<iostream>
#include<string.h>
using namespace std;
class Coffee{
public:
   string name;           //stirng name for the name of coffee
   int caffine_content;   //contains the caffine content in coffee
public:

   void take_inp()
   {
       cout<<"Enter the coffee name"<<endl;
       cin>>name;
       cout<<"enter the caffeine content"<<endl;
       cin>>caffine_content;
   }
   int mutators()       //to check whether the value of caffeine is within the limit or not
   {
       if(!(caffine_content>=50 && caffine_content<=300))
           return 0;
       else
           return 1;
   }
   void calc_cups()           //to calculate the no. of cups that will be risky
   {
       int cups=0;           //integer variable as no. of cups will be an integer
       cups= 180.0/((caffine_content / 100.0)*6.0);
       cout<<"The maximal number of cups beyond which it will become risky ="<<cups<<endl;

   }
};
int main()
{
   Coffee c1,c2;           // Two instance of coffee variable
   c1.take_inp();
   c2.take_inp();
   //Now we need to call the mutator function
   int x,y;
   x=c1.mutators();
   y=c2.mutators();
   if(!x)
       cout<<"The caffeine content of "<<c1.name<<" is not in the desired range"<<endl;
   else
   {
       c1.calc_cups();
   }
   if(!y)
       cout<<"The caffeine content of "<<c2.name<<" is not in the desired range"<<endl;
   else
   {
       c2.calc_cups();
   }
   return 0;
}

OUTPUT CASE 1 :--

Enter the coffee name
AFFOGATO.
enter the caffeine content
250
Enter the coffee name
CAPPUCCINO
enter the caffeine content
270
The maximal number of cups beyond which it will become risky =12
The maximal number of cups beyond which it will become risky =11

OUTPUT CASE 2:--

Enter the coffee name
ESPRESSO
enter the caffeine content
120
Enter the coffee name
ESPRESSO
enter the caffeine content
270
The maximal number of cups beyond which it will become risky =25
The maximal number of cups beyond which it will become risky =11