执行所需的函数调用

def my_function():
    print("Hello, world!")

my_function()

function myFunction() {
    console.log("Hello, world!");
}

myFunction();

public class HelloWorld {
    public static void main(String[] args) {
        myFunction();
    }

    public static void myFunction() {
        System.out.println("Hello, world!");
    }
}

using System;

class HelloWorld {
    static void Main() {
        myFunction();
    }

    static void myFunction() {
        Console.WriteLine("Hello, world!");
    }
}