[Solved] How to assign a variable in one method and change/use it in another method? [closed]

by


You seem to have misunderstood how variable scopes work. The x in Assign is not the same as x in Main. This is because in C#, int is passed by value (this is the same as C++, BTW).

You probably meant to mark the variables in Assign as ref: 

class Program
{
    static void Assign(ref int x, ref int z)
    {
        x = 3;
        z = 2;
    }

    static void Sum(int x, int z)
    {
        Console.WriteLine(x + z);
    }

    static void Main(string[] args)
    {   
        int x = 0, z = 0;
        Assign(x, z);
        Sum(x, z);
    }
}

Note the this is not recommended, because now Assign has side-effects. This is better: 

class Program
{
    static void PrintSum(int x, int z)
    {
        Console.WriteLine(x + z);
    }

    static void Main(string[] args)
    {   
        PrintSum(3, 2);
    }
}

For more background, I would suggest looking at the difference between pass-by-reference and pass-by-value.

3

solved How to assign a variable in one method and change/use it in another method? [closed]