Question

I’m relatively new to programming.
I’m trying to make a program at the moment, and I’m trying to figure out how I can do something. I hope you guys can help me as I just don’t know how to do this…

So, first of all, I have made an array and filled it with stuff:

String[] pizza = new String[10];
    pizza[0] = "1- Cheese";
    pizza[1] = "2- Wedge";
    pizza[2] = "3- Bacon";
    pizza[3] = "4- Hawaiian";
    pizza[4] = "5- Vegetarian";
    pizza[5] = "6- Pepperoni";
    pizza[6] = "7- Ham";
    pizza[7] = "8- Apple";
    pizza[8] = "9- Grape";
    pizza[9] = "10- Italian";

I want to make it so that I have an IF statement (which is inside a while). I’ll just put the code here, and explain after.

int pizzaCounter = 0;

        while(pizzaCounter < 5)
        {

            Scanner pizzaPick = new Scanner(System.in);
            int Pizzas = pizzaPick.nextInt();

            if (Pizzas == 1)
            {
                *Store "1- Cheese" (From pizza[0]) into a variable*

                pizzaCounter++;
            }
            if (Pizzas == 2)
            {
                *Store "2- Wedge" (From pizza[0]) into a variable*

                pizzaCounter++;
            }
            if (Pizzas == 3) etc...

        }

Now at the ‘Insert something here’ bit, I want to try to make it so that it stores the text from the array(pizza) into some variable which I can print out later… So for example if the user inputs ‘1’ then it takes: “1-Cheese” and stores it in a variable which I can print out later…

Also, I want to make it clean, so that there aren’t 10 IF statements prompting each variable thing…?

I don’t know if this is even possible, but any help is greatly appreciated! 😀

I hope what I am asking here is understandable…

Please, if possible, could you explain what you are doing at each of the steps, so that I can actually understand what is happening, and maybe use the same code later, instead of just copying it and pasting the code? I’m kind of a noob so I think that the more I learn the more I can use later on… Thanks so much! 😀

Answer 1

You can replace the entire series of if statements with something like:

string saveName = "";
if ((Pizzas >= 0) && (Pizzas <= 9)) {
    saveName = pizza[Pizzas];           // This is "insert something here".
    pizzaCounter++;
}

// Here, saveName has the pizza name.

---

For a full blown program which allows you to order up to five pizzas, saving the lot and printing them out at the end, see below:

import java.util.Scanner;

public class testprog {
    public static void main (String args[]) {
        String[] pizzaList = {" 0 - End of order",
            " 1 - Cheese", " 2 - Wedge", " 3 - Bacon", " 4 - Hawaiian",
            " 5 - Vegetarian", " 6 - Pepperoni", " 7 - Ham", " 8 - Apple",
            " 9 - Grape", "10 - Italian"};

        int[] orderList = new int[5];  // Ordered pizzas
        int pizzaCount = 0;            //    and count.

        Scanner pizzaPick = new Scanner(System.in);
        while (pizzaCount < 5) {
            // Output the menu.

            System.out.println ("Choose a pizza:");
            for (int i = 0; i < pizzaList.length; i++)
                System.out.println ("   " + pizzaList[i]);

            // Get input, check, and add pizza.

            int thisPizza = pizzaPick.nextInt();
            if (thisPizza == 0) break;

            if ((thisPizza > 0) && (thisPizza < pizzaList.length))
                orderList[pizzaCount++] = thisPizza;

            if ((thisPizza < 0) || (thisPizza >= pizzaList.length))
                System.out.println ("Invalid input of " + thisPizza);
        }

        // Output all pizzas.

        for (int i = 0; i < pizzaCount; i++)
            System.out.println ("Ordered: " + pizzaList[orderList[i]]);
    }
}