Question

here is my source code, everything is good until i get to the output and I cant get this to work. Visual Studio doesn’t like what I have in the output section, labeled //OUTPUT.

What do I need to add or change to get this to work?

static void Main(string[] args)
{
    int monthNumber;
    string monthName;

    //INPUT
    Console.WriteLine("Please enter the number of the month");
    monthNumber = Convert.ToInt16(Console.ReadLine());

    //PROCCESSESS
    if (monthNumber == 1)
    {
        monthName = "January";
    }
    else if (monthNumber == 2)
    {
        monthName = "February";
    }
    else if (monthNumber == 3)
    {
        monthName = "March";
    }
    else if (monthNumber == 4)
    {
        monthName = "April";
    } 
    else if (monthNumber == 5)
    {
        monthName = "May";
    }
    else if (monthNumber == 6)
    {
        monthName = "June";
    }
    else if (monthNumber == 7)
    {
        monthName = "July";
    }
    else if (monthNumber == 8)
    {
        monthName = "August";
    }
    else if (monthNumber == 9)
    {
        monthName = "September";
    }
    else if (monthNumber == 10)
    {
        monthName = "October";
    } 
    else if (monthNumber == 11)
    {
        monthName = "November";
    }
    else if (monthNumber == 12)
    {
        monthName = "December";
    }

    //space to increase readability
    Console.WriteLine(Environment.NewLine);

    //OUTPUT
    Console.WriteLine("Month:" + monthName);
    Console.ReadLine();
}

Answer 1

monthName must be initialized before use. So you can change the declaration line as

string monthName = null;

That’s because the code does not guarantee that monthName gets assigned. For example what if the input number is 13?