CODEWITHSUNDEEP
c#algorithmif-statement
Kirito
Kirito

Reputation: 23

How to Check for Even numbers in C#?

I have a problem with if and if else.
I wrote a snippet of code that asks for a person's personal signum and then takes the 9th element out.
But I simply can not find a way where by using if-else to check whether it is an even number or not, in order to determine if the person is a male or female.
This how my code looks so far: 

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    namespace övning_14
    {
        class ålder
        {
            static void Main(string[] args)
            {
                string personNummer; 
                string indata;
                Console.Write("vad är ditt person signum ? "); // simply asks for the num
                indata = Console.ReadLine();
                personNummer = indata;
                kön = int.Parse(personNummer.Substring(9, 1));
            }
        }
}

Upvotes: 1

Views: 224

Answers (4)

Sinatr
Sinatr

Reputation: 21999

Just for fun, this will also works

if((val / 2).ToString(NumberFormatInfo.InvariantInfo).Contains("."))
{
    // odd
}
else
{
    // even
}

Upvotes: 0

Kishan
Kishan

Reputation: 1190

The Following code

  public string evenodd(int value)
    {
        if(value % 2 == 0)
        {
        return "Even";
        }
        else
        {
        return "Odd";
        }
    }

Upvotes: 0

Pmleader
Pmleader

Reputation: 236

try something along the lines of 

if(kön % 2 == 0)
{
//Even number
}

Upvotes: 0

MrSykkox
MrSykkox

Reputation: 528

You have to check the the kön variable.

public static bool IsEven(int value)
{
    return value % 2 == 0;
}

Now you can call

if (IsEven(kön) == true)
{
    // even number 
}
else
{
    // Not even
}

For a description of the % operator in C# you can check MSDN: % Operator

Upvotes: 2

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