CODEWITHSUNDEEP
c#overridingabstract-classtostring
Liam de Haas
Liam de Haas

Reputation: 1268

Overriding toSting in derived class

I have an abstract class Animal Looking like this

abstract class Animal{
    protected int numberOfPaws;

    public abstract String speak();

    public String toString(){
        return "I have " + numberOfPaws + " paws";
    }
}

Then I have a derived class that has a new implementation of toString() looking like this

class Cow : Animal{
    public Cow : base(4) {}

    public override String speak(){
        return "Moo!";
    }

    public new Strinf toString(){
        return "I am a Cow " + base.toString();
    }
}

And I have a main looking like this

void Main{
    Cow c = new Cow();

    Console.WriteLine(c.toString());
}

But when I run this it prints UserQuery+Cow to the console.

I have no clue as to what i'm doing wrong? Is it doing this beacause of the base.toString()?

Upvotes: 0

Views: 63

Answers (2)

Jalkar
Jalkar

Reputation: 71

You should read here : How To: Override the ToString Method

public override string ToString() 
{
    return "I have " + numberOfPaws + " paws";
}

You miss the override keyword

Upvotes: 2

General-Doomer
General-Doomer

Reputation: 2761

Use override keyword:

abstract class Animal
{
    protected int numberOfPaws;

    public abstract String speak();

    public override string ToString(){
        return "I have " + numberOfPaws + " paws";
    }
}

class Cow : Animal
{
    public Cow : base(4) {}

    public override String speak(){
        return "Moo!";
    }

    public override string ToString(){
        return "I am a Cow " + base.ToString();
    }
}

Upvotes: 3

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