Create a program that tells the user based on the size of their venue space at a concert, the maximum number of people allowed inside. 

There will be 2 lists one for how many can enter based on underage concert and another larger number based on if its 18+ concert.

The program will compute the airspace in the indoor space by using the formula for a volume: ( width x length x height) C++

• create a class called theVolume; it will include the following:
  • private:
    • declare width, length, and height as doubles
  • public:
  • (where you'll list the function prototypes)
    • setVenueW
    • setVenueL
    • setVenueH
    • parameters for each will be double
    • you'll need these functions to 'get' the inputs from the 'set' functions and return them
    • 
      
      • getVenueW
      • getVenueL
      • getVenueH
      • each function will be a constant (meaning that their values should not be changed) so const should be the last item on the prototype line
    • list a prototype to return the result of the volume equation (also a constant)
      • getVolume
  • the main function:
    • declare an instance of the Volume class called Venuespace
    • declare variables to store the values of width, length, and height
    • display  a request for the user to input the width the length and the height.
    • receive and store the width the length and height input
    • call each of the three 'set' functions and pass the appropriate variable to each
    • call the function to set the volume for Venuespace and assign it to a double variable
    • display the computed Venuespace in a sentence that describes what it represents
    • declare a constant value called CAPACITY_UNDER18 which will be .006 just under the other variable declarations"
    • multiply the volume for Venuespace times(x) CAPACITY_UNDER18
      • this will be the maximum number of people allowed during under 18 concert
      • format this number so the decimal is dropped (can't have fractional people!)
        • include the appropriate header file
    • declare another const called CAPACITY_OVER18, which will be equal to twice the CAPACITY_UNDER18
      • multiply the volume for Venuespace times(x) CAPACITY_UNDER18
        • this will be the maximum number of people allowed in
        • format this number so the decimal is dropped (can't have fractional people!)