Method Overloading

Overloading

• Declaring multiple methods with the same name.

• Differentiated by the number of parameters, and the type of parameters.

• Useful for declaring functions that may do similar tasks but take in different parameters.

Valid Overloading

static void Add(int a, int b)
{
    Console.WriteLine(a + b);
}

static int Add(int a, int b)
{
    return a + b;
}

• Parameters are identical but return type is different.

Invalid Overloading

static void Add(int a, int b)
{
    Console.WriteLine(a + b);
}

static void Add(double a, double b)
{
    Console.WriteLine(a + b);
}

static void Add(int a, double b)
{
    Console.WriteLine(a + b);
}

static void Add(int a, int b, int c)
{
    Console.WriteLine(a + b + c);
}

• Number of parameters or their type (or both) difference.