Question

C++

• Prompt the user for the number of guests attending the event.
• Determine and report the number of large, medium, and small pizzas you need to order.
• For every 7 guests, order one large pizza.
• For every 3 guests left over, order one medium pizza.
• For every 1 guest left over, order one small pizza.

Part 2 - Serving Size

• Compute and report the total area of pizza (in square inches) you need to purchase. Do not round these values.
• Compute and report the total area of pizza (in square inches) each guest can eat. Do not round these values.

Part 3 - Supplementing the Budget (

• Prompt the user for the percent of the total price to be paid as a tip. The tip percentage will be input as a whole integer from 0 to 100.
• Compute and report the total cost (including tip) of all the pizzas, rounding to the nearest dollar. Note: Changing the value type into an int alone will not round to the nearest dollar. See the end of the "Notes" section below.

Part 4 - The "Magic" of Avoiding Magic Numbers

Sometime it may feel like a nuisance to make sure to properly use constants for magic numbers, so here we give you the opportunity to see how useful it can be. By changing just some of the constants, your program can simulate any pizza sizes and prices, without having to touch any other part of your code. Those constants are how many people each pizza feeds, the dimensions of each pizza, and the cost of each pizza. Make sure that you have written your code so that by changing only those nine values, and re-compiling, you can simulate any arbitrary pizza values.

Since you will be changing constants and recompiling for Part 4, you will be submitting a different compiled program than used in Parts 1, 2, and 3. Thus, do not submit the updated program here. Instead, copy your program from here into the following zyBook section (Main Lab 2B), change 9 of your constants, and submit the program from there. The grading TA will combine the points from the auto-grade of both 2A (possible 85 points) and 2B (possible 15 points) to get your full auto-grade points. The new values you will use are given in section Main Lab 2B.

Sample Input

303

15

Sample Output

In this case the output would look like:

Please enter the number of guests: 
43 large pizzas, 0 medium pizzas, and 2 small pizzas will be needed. 
A total of 13735 square inches of pizza will be purchased (45.3302 per guest).
 Please enter the tip as a percentage (i.e. 10 means 10%): 
The total cost of the event will be: $743

Answer 1

FOR Part-1 Part-2 And Part-3:

EXPLANATION: Modular division is used to calculate the remaining guests

Division is used to get the number of the pizzas that can be ordered based on its feeding capacity

Source Code :

#include <iostream>
#include<cmath>

//for round function
using namespace std;
void calculatePizza(int noOfGuests);
void calculatePizza(int noOfGuests){
   //Declare the costs of each sized pizza
   double largeCost=30,mediumCost=20,smallCost=10,guests=noOfGuests;
   //number of large count pizzas
   int largeCount=noOfGuests/7;
   noOfGuests%=7;
   //number of medium count pizzas
   int mediumCount=noOfGuests/3;
   noOfGuests%=3;
   //number of smallcount pizas
   int smallCount=noOfGuests;
   //Find the cost of pizzas
   double cost=largeCount*largeCost+mediumCount*mediumCost+smallCost*smallCount;
   //Assuming the size of large size pizza is 30 , medium size pizza is 20 small size pizza is 10 sqinches
   double size=largeCount*30+mediumCount*20+smallCount*10;
  
   cout<<largeCount<<" Large Pizzas is, "<<mediumCount<<" medium Pizzas, "<<smallCount<<" small pizzas will be needed";
   cout<<"A total of "<<size<< " square inches of pizza will be purchased ("<<size/guests<<")";
   int tipPercent;
   cout<<"Please enter the tip as a percentage : ";
   cin>>tipPercent;
   double tip= round(cost*(tipPercent/100));
   cout<<"The total cost of the event will be: $"<<cost+tip;
}
  
int main()
{
cout<<"Please enter the number of guests: ";
int noOfGuests;
cin>>noOfGuests;
calculatePizza(noOfGuests);
}

Pizza Source Code Image

OUTPUT:

// Output is based on the price and size of which i have taken

PART_4:

Explanation: In the previous part we have taken all the things in a static  way while calculating  in this we declaring the variables for every size, feeding count, cost of pizza by changing the data for these values can lead to being desired output for the defined pizza options

SOURCE CODE:

#include <iostream>
#include<cmath>
using namespace std;
void calculatePizza(int noOfGuests);
void calculatePizza(int noOfGuests){
   //Declare the costs of each sized pizza
   double largeCost=30,mediumCost=20,smallCost=10,guests=noOfGuests,sizeLarge=30,sizeMedium=20,sizeSmall=10;
   int feedLarge=5,feedMedium=3,feedSmall=1;
   //number of large count pizzas
   int largeCount=noOfGuests/feedLarge;
   noOfGuests%=feedLarge;
   //number of medium count pizzas
   int mediumCount=noOfGuests/feedMedium;
   noOfGuests%=feedMedium;
   //number of smallcount pizas
   int smallCount=noOfGuests;
   //Find the cost of pizzas
   double cost=largeCount*largeCost+mediumCount*mediumCost+smallCost*smallCount;
   //Assuming the size of large size pizza is 30 , medium size pizza is 20 small size pizza is 10 sqinches
   double size=largeCount*sizeLarge+mediumCount*sizeMedium+smallCount*sizeSmall;
  
   cout<<largeCount<<" Large Pizzas is, "<<mediumCount<<" medium Pizzas, "<<smallCount<<" small pizzas will be needed";
   cout<<"A total of "<<size<< " square inches of pizza will be purchased ("<<size/guests<<")";
   int tipPercent;
   cout<<"Please enter the tip as a percentage : ";
   cin>>tipPercent;
   double tip= round(cost*(tipPercent/100));
   cout<<"The total cost of the event will be: $"<<cost+tip;
}
  
int main()
{
cout<<"Please enter the number of guests: ";
int noOfGuests;
cin>>noOfGuests;
calculatePizza(noOfGuests);
}

SOURCE CODE IMAGE:

OUTPUT: