// This program keeps track of how many people in 5 different
// age categories attend a particular movie

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

int main()
{
   int age;          // age the user types in
   int count;
   int sumSoFar;     // sum of all ages
   int youngest;     // youngest age
   int oldest;       // oldest age
   int group1;
   int group2;
   int group3;
   int group4;
   int group5;
   char n;


   sumSoFar = 0;
   count = 0;
   cout << "Enter age of attendee (-1 to quit): ";
   cin >> age;
   while (age != -7){
         sumSoFar = sumSoFar + age;
         if (age < youngest){
         youngest = age;
         }
         if (age > oldest){
         oldest = age;
         }
         cout << "enter age of attendee (-1 to quit): ";
         cin >> age;
         count++;

   }

   if (count == 0){
           cout << "There is no average, because you did not "
                << "enter any numbers!";
       } else {

           cout << "The average age was "
            << sumSoFar/count << endl;

            }
   if (youngest == -1){
       cout << "There is no youngest because you "
            << "did not enter any numbers!";
    } else{
        cout << "The youngest person in attendance was "
             << youngest << endl;
    }

   if (oldest == -1){
       cout << "There is no oldest because you "
            << "did not enter any numbers!";
    } else{
        cout << "The oldest person in attendance was "
             << oldest << endl;
    }


   count == 0;
   if (age < 0);
      cout << "no age entered" << endl;
   if (age <= 18)
   group1 = (age <= 18);
      cout << "age 0 to 18: " << age << endl;
   if (age <= 30)
   group2 = (age <= 30);
      cout << "age 19 to 30: " << age << endl;
   if (age <= 40)
   group3 = (age <= 40);
      cout << "age 31 to 40: " << group3 << endl;
   if (age <= 50)
   group4 = (age <= 60);
      cout << "age 41 to 60: " << group4 << endl;
   if (age > 60)
   group5 = (age > 60);
      cout << "over 60: "  << group5 << endl;


   system("pause");



}

// This program keeps track of how many people in 5 different
// age categories attend a particular movie

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

int main()
{
    int age;          // age the user types in
    int count;
    int sumSoFar;     // sum of all ages
    int youngest;     // youngest age
    int oldest;       // oldest age
    int group1 = 0;       //0 to 18
    int group2 = 0;       //19 to 30
    int group3 = 0;       //31 to 40
    int group4 = 0;       //41 to 60
    int group5 = 0;       //over 60

    sumSoFar = 0;
    count = 0;
    cout << "Enter age of attendee (-1 to quit): ";
    cin >> age;
    youngest = oldest = age;
    while (age != -1)
    {
        sumSoFar = sumSoFar + age;
        if (age < youngest)
        {
            youngest = age;
        }
        if (age > oldest)
        {
            oldest = age;
        }

        if (age <= 18)
            group1++;
        else if (age >18 && age <= 30)
            group2++;
        else if (age >30 && age <= 40)
            group3++;
        else if (age >40 && age <= 50)
            group4++;
        else
            group5++;

        cout << "enter age of attendee (-1 to quit): ";
        cin >> age;
        count++;

    }

    if (count == 0)
    {
        cout << "There is no average, because you did not "
        << "enter any numbers!";
    }
    else
    {

        cout << "The average age was " << sumSoFar/count << endl;

    }
    if (youngest == -1)
    {
        cout << "There is no youngest because you " << "did not enter any numbers!";
    }
    else
    {
        cout << "The youngest person in attendance was " << youngest << endl;
    }

    if (oldest == -1)
    {
        cout << "There is no oldest because you "
        << "did not enter any numbers!";
    }
    else
    {
        cout << "The oldest person in attendance was "
        << oldest << endl;
    }

    cout << "age 0 to 18: " << group1 << endl;
    cout << "age 19 to 30: " << group2 << endl;
    cout << "age 31 to 40: " << group3 << endl;
    cout << "age 41 to 60: " << group4 << endl;
    cout << "over 60: "  << group5 << endl;

    system("pause");



}