计算机语言的四种模式 (计算机常用语言helloworld)

C

#include <stdio.h>  
void main()                  
{  
  printf("Hello, world!\n");   
}

C++

#include <iostream>  
int main()                  
{ 
  std::cout<<"Hello, world!"<<std::endl;
  return 0;
}

Java

public class HelloWorld  
{  
  public static void main(String[] args)  
  {  
    System.out.println("Hello, world!");  
  }  
}

Python/Ruby/R/Php

print("Hello, world!")

Go

package main
import "fmt" 
func main() {    
  fmt.Println("Hello, world!")
}

Rust

fn main() {
  println!("Hello, world!");
}

Kotlin

fun main(args: Array<String>) {
    println("Hello, world!")
}

Matlab

disp("Hello, world!");