Cannot convert from method group to Int32

Question

I want my small math program to look really sleek, and by this I mean under the Main method I have the following methods:

Greet()
UserInput1()
UserInput2()
Result()

In Greet() I just say "HI", in UserInput1() I want to collect the first number, in UserInput2() I want to collect the second number, and in Result() I want to print the result of UserInput1 + UserInput2. I can collect the number in UserInput 1 and 2 but I can’t seem to send them to Result() without assigning values to them under the Main() function.

namespace HelloWorld
{
    class Program
    {
        static void Main(string[] args)
        {
            Greet();
            firstNumber();
            secondNumber();
            result(firstNumber, secondNumber);
            Console.ReadKey();
        }

        public static void Greet()
        {
            Console.WriteLine("Hello, pls insert two numbers");
        }

        public static int firstNumber()
        {
            int num01 = Convert.ToInt32(Console.ReadLine());
            return num01;
        }

        public static int secondNumber()
        {
            int num02 = Convert.ToInt32(Console.ReadLine());
            return num02;
        }

        public static void result( int num01, int num02)
        {

            Console.WriteLine(num01 + num02);
        }
    }
}

Answer 1

change this:

result(firstNumber, secondNumber);

to this:

result(firstNumber(), secondNumber());

and remove the calls to the 2 methods in the two lines above.

To call a method without parameters, you need the parentheses without content.

Answer 2

Cannot convert from method group to int

This error message occurs when you attempt to take a method (without invocation) and pass it as a type. The result method is expecting two parameters of type int, but you're attempting to pass it the method, rather than the result of the method invocation.

You need to store the results in a variable, or invoke the methods with the ():

Like this:

static void Main(string[] args)
{
    Greet();
    var first = firstNumber();
    var second = secondNumber();
    result(first , second );
    Console.ReadKey(); 
}

or this:

static void Main(string[] args)
{
    Greet();
    result(firstNumber(), secondNumber());
    Console.ReadKey(); 
}