void function with 4 parameters that must display

[miah612000]

Thats what i was thinking const ints or doubles to pass the values. Not real sure how I am gonna get the variables before I call them into the function though. Will definently watch a couple videos on arrays though I think I can get that. Its just frustrating when you have no wxample of exactly what you want to do and all you can do is guess. I'll see if I can't put this together differently. Thank you

[TheIdeasMan]

Not real sure how I am gonna get the variables before I call them into the function though.

Some pseudo code:

// Show the Menu
// get some input
// call functions to do some calculations
// show the results 

[miah612000]

More orderly and when I just use cout it works correctly or when I have no parameters to the function works fine so still same predicament I need an example of how a parameter function is used to to display " " and variables ???

#include <iostream>
#include <iomanip>

using namespace std;


    void display()
    {
    cout << "*** BASEBALL GAME SNACK MENU ***" << endl;
    cout << "----------------------------------------------" << endl;
    cout << "1  Hamburger 	        $6.00" << endl;
    cout << "2   Hotdog		$4.50" << endl;
    cout << "3   Peanuts	        $3.75" << endl;
    cout << "4   Popcorn	        $5.50" << endl;
    cout << "5   Soda		$2.80" << endl;
    cout << "6   Chips		$1.00" << endl;
    cout << "7   Water		$2.00" << endl;
    cout << "8   end order  "<< endl << endl;
    }

    void cost(double total, double tax, double tip, double totBill)
    {
    cout << "The subtotal is: " << setprecision(2) << fixed << total << endl;
    cout << "Tip comes to: " << setprecision(2) << fixed << tip << endl;
    cout << "Tax on your purchase is: " << setprecision(2) << fixed << tax << endl;
    cout << "Your total bill is: " << setprecision(2) << fixed << totBill << endl;
    }

int main()
{
    const double hamburgerPrice = 6.00;
    const double hotdogPrice = 4.50;
    const double peanutsPrice = 3.75;
    const double popcornPrice = 5.50;
    const double sodaPrice = 2.80;
    const double chipsPrice = 1.00;
    const double waterPrice = 2.00;

    double item;
    double total = 0.0;



    //displays menu
    display();


    while (item !=8)
    {
     //displays enter item until 8 is selected
    cout << "Enter Menu Items #:" << endl;
    cout << "----------------" << endl;

    cin >> item;
    cout << endl;

    if (item ==1)
    {
        item = hamburgerPrice;
    }
    else if (item ==2)
    {
        item = hotdogPrice;
    }
    else if (item ==3)
    {
        item = peanutsPrice;
    }
    else if (item ==4)
    {
        item = popcornPrice;
    }
    else if ( item ==5)
    {
        item = sodaPrice;
    }
    else if (item == 6)
    {
        item = chipsPrice;
    }
    else if (item == 7)
    {
        item = waterPrice;
    }
    else if ( item == 8)
    {
        item = 0;
        break;
    }


    total += item;
    }



    double tip;
    tip = total * .20;
    double tax;
    tax = total * .065;
    double totBill;
    totBill = total + tax + tip;

    void cost(double, double, double, double);





}

[TheIdeasMan]

Ok, we are getting there :+)

TheIdeasMan wrote:

Also, you have a variable item which you are using for 2 things: the cost of an item and the menu option. Create a new variable for the menu option.

So do that :+) and use it in the if statements.

    if (MenuOption == 1)
    {
        total += hamburgerPrice;

Then you can remove line 92, and not have an item variable at all !

I gave you some wrong information earlier, call a function with the values you want to send to it, without any types:

cost( total, tax, tip, totBill);

The compiler doesn't need the types there, because you have already provided a function definition.


This part:

double tip;
    tip = total * .20;
    double tax;
    tax = total * .065;
    double totBill;
    totBill = total + tax + tip;

can be written like this, we can delay the declaration of a variable until we have a sensible value to assign to it:

  double  tip = total * 0.20;
  double tax = total * 0.065;
  double totBill  = total + tax + tip;
    

Hope that helps :+)

[miah612000]

great it works perfecr like that?? I would have spent another day banging my head now just write the void Tcash function and I will have it made thank you again