无法从方法组转换为Int32 [英] Cannot convert from method group to Int32

问题描述

我希望我的小型数学程序看起来非常时尚，这意味着在Main方法下，我可以使用以下方法:

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()

在Greet()中我只说"HI"，在UserInput1()中我要收集第一个数字，在UserInput2()中我要收集第二个数字，在Result()中我要打印的结果UserInput1 + UserInput2.我可以在UserInput 1 and 2中收集数字，但是如果不通过Main()函数为它们分配值，我似乎无法将它们发送到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);
        }
    }
}

推荐答案

更改此内容:

result(firstNumber, secondNumber);

对此:

result(firstNumber(), secondNumber());

并删除上面两行中对这两个方法的调用.

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

要调用不带参数的方法，需要带括号的内容.

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

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