Hey guys i m trying to do an assignment that was posted about 10-15years ago. but i m doing it with a slight bit of modification. Below is the detail of the assignment.

http://www.taumoda.com/web/class/day6.html
What i am trying to do is, instead of it being a kids b'day party, let it be a normal adults party.

Let there be x number of invited guests. and lets imagine that 50% of all the guest consumer beer. and let beer come in kegs to feed 20 guests/keg.

I just need help with the last function in my code. where i want the number of invited guest to come from an earlier function (inv_guest) and then calculate the number of kegs of beer to be ordered.

**for example**, if 123 people are invited, a total of 4 kegs of beer will be ordered; 3 for the first 60 and an extra 1 for the remaining 1 person.

Code:

`#include <iostream>`

#include <stdlib.h>

using namespace std;

const int kegs = 20;

const int cases = 20;

const int pizza = 4;

int num_guest = 0;

void welcome();

int inv_guest(int);

void display();

void input();

void beer(int &);

void coke();

int main ()

{

int x, choice;

/*

while (choice!=6)

{

switch(choice)

*/

input();

beer(num_guest);

system("PAUSE");

return 0;

};

void input()

{

int choice;

welcome();

do

{

cout<<"\n\nEnter A Valid Choice \n";

cin>>choice;

}while(!(choice>=1 && choice<=5));

}

int inv_guest(int num_guest)

{

int guest;

cin >> guest;

return guest;

}

void welcome()

{

cout << "\t***The Party Planning Assistant is please to be at your service!***\n\n";

cout<<"\n*********************************\n";

cout<<" 1. Enter number of Invited Guests \n";

cout<<" 2. Determine beverage orders \n";

cout<<" 3. Determine food orders \n";

cout<<" 4. Display Information \n";

cout<<" 5. Exit Application \n";

cout<<"***********************************";

}

void beer(int &people)

{

double beer = 0;

people *= inv_guest(people);;

// inv_guest(people);

beer = people/2;

beer = beer/kegs

cout << "\n\n Number of kegs =" << kegs;

}