Ask for input and print that location in an array

Question

Hoping someone can help. I am teaching myself C# and one of the challenges in this chapter has tasked me with storing the number of days in each month in an array which I called daysInMonth. When the program starts, I am to ask for a user to input a number between 1 and 12 and then spit out the number of days in the month that corresponds with that number.

I have searched for this but am coming up with nothing. Most examples are related to matching/finding an int or string with something in the array which isn't what I want. I want something so that if the user enters the number 5, the program will print out whatever is in the 5th whatever in the array. I know this is pretty easy but I think that my searching is coming up with nothing because I don't know the correct term to search for. Any help would be appreciated.

UPDATE:

Thanks to MAV I got it working. Posting full code of the program.

        int[] daysInMonth = new int[12] { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
        string[] monthNames = new string[12] { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
        int myChoice;

        Console.Write("Please enter a number: ");

        myChoice = Int32.Parse(Console.ReadLine());

        if (myChoice < 1)
        {
            Console.WriteLine("Sorry, the number {0} is too low.  Please select a number between 1 and 12.", myChoice);
            Console.Write("Please enter a number: ");
            myChoice = Int32.Parse(Console.ReadLine());
        }
        else if (myChoice > 12)
        {
            Console.WriteLine("Sorry, the number {0} is too high.  Please select a number between 1 and 12.", myChoice);
            Console.Write("Please enter a number: ");
            myChoice = Int32.Parse(Console.ReadLine());
        }

        int i = daysInMonth[myChoice - 1];
        string m = monthNames[myChoice - 1];

        Console.WriteLine("Thank you.  You entered the number {0}.", myChoice);
        Console.WriteLine("That number corresponds with the month of {0}.", m);
        Console.WriteLine("There are {0} days in this month.", i);

        Console.ReadLine();

please provide the code you have, then someone might be able to advise how to fix it. — jflood.net
– jflood.net, Commented Jun 13, 2012 at 23:15

MAV · Accepted Answer · 2012-06-13 23:25:57Z

4

Since you want to learn C# I am not going to give you what I believe is the answer. Instead I will try to give you knowledge about how to use arrays, since that seems to be your problem.

You can declare arrays like this:

 int[] intArray = {1, 2, 3};      //This array contains 1, 2 and 3
 int[] intArray2 = new int[12];   //This array have 12 spots you can fill with values
 intArray2[2] = 42;               //element 2 in intArray2 now contains the value 42

To access an element in an array, you can do this:

int i = intArray2[2];             //Integer i now contains the value 42.

For more information about arrays and how to use them I can recommend reading this tutorial: Arrays Tutorial

answered Jun 13, 2012 at 23:25

MAV

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1 Comment

Trido Over a year ago

That was really good, thank you so much. That gave me enough info to figure it out for myself. I did appreciate that too. You get that warm fuzzy feeling when you get it to work yourself. :)

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