“Hello, World!”程序是一个只在计算机屏幕上打印出“Hello, World!”(英语,意为“世界,你好!”)字串的计算机程序。该程序通常是计算机程序设计语言的初学者所要学习编写的第一个程序。它还可以用来确定该语言的编译器、程序开发环境以及运行环境已经正确安装。 nak Yn
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 R,Vd.-5M
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以下是用不同语言写成的Hello World程序的几个例子: CH<E,Z
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Ada b?'yAXk
with Ada.Text_Io; use Ada.Text_Io; o-Ga3i 8
procedure Hello is ZR'H\Z
begin i _%Q`i
Put_Line ("Hello, world!"); s@7H1)U
end Hello; RG4 sQ0
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汇编语言 9tqF8pb7v
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x86 CPU,DOS,TASM tq|hPd<C
MODEL SMALL @i*|s~15
IDEAL 7!N2-6GV
STACK 100H lMbAs.!
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DATASEG \0gM o&
HW DB 'Hello, world!$' #KiRfx4G
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CODESEG &EnuE0BD
MOV AX, @data ^) s2$A:L
MOV DS, AX L{`JRu
MOV DX, OFFSET HW %p0xM
MOV AH, 09H {qa Aq%'
INT 21H @#-q^}3
MOV AX, 4C00H C;vtY[}<
INT 21H Vkc#7W(
END bv*,#Qm
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x86 CPU,GNU/Linux,NASM ziCHjqT
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). W}]%X4<#rN
;Enter this into "hello.asm" then type: NSDv;|f
;"nasm -f elf hello.asm" _zwUE
;"ld hello.o -o hello" ?%y?rk <
;"./hello" )
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section .data ;data section declaration Ht4;5?/y
msg db 'Hello World!',0AH 5kz)5,KjM
len equ $-msg ;string length ,c)uX#1
2]ape !(
section .text ;code section declaration >cCR2j,r
global _start ;entry point (start of execution) go<W( ,O
_start: mov edx,len ;string length =>! Y{:
y(
mov ecx,msg ;string start '^"6+ k
mov ebx,1 ;file handle: stdout X.e7A/ClEo
mov eax,4 ;sys_write 5>\/[I/!
int 80h ;kernel system call BV[ 5}
w&KK3*=""
mov ebx,0 ;return value X<%Q"2hW
mov eax,1 ;sys_exit mFZ?hOyP.
int 80h ;kernel system call ]V#M%0:Q82
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x86 CPU,Windows,MASM32 _n` a`2C|m
.386
i|m3mcI%2
.model flat,stdcall 6ZQwBS0Y
option casemap:none Q(oN/y3,
;Include 文件定义 7[}xP#Z
include windows.inc 81i655!Z
include user32.inc L#
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includelib user32.lib 7fba-7-P
include kernel32.inc CtS l
includelib kernel32.lib 5)MS~ii
;数据段 dp*u9z~NA
.data F;<xnC{[
szCaption db 'A MessageBox!',0 CLJ;<
szText db 'Hello,world!',0 TBT:/Vfun
;代码段 ={xE!"
.code 7!JQB
start: Yn G_m]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 2mGaD\?K
invoke ExitProcess,NULL qCnZhJ
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> wGP;Vbk
end start 6Z%U`,S
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BEGIN { print "Hello, world!" } H,u<|UMM_
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BASIC _<OSqE
传统版BASIC(例如GWBASIC): vG"=h%
uD@#
10 PRINT "Hello, world!" SF<c0bR9
20 END %Va!\#
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或在提示符输入: &?yZv{
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?"Hello, world!":END I\$X/t +dH
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现代版BASIC(例如Quick BASIC): _zwG\I|Q
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Print "Hello, world!" *5^Q7``
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以下的语句在Quick BASIC中同样有效: d5gR"ja
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? "Hello,world!" ?qWfup\S
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L$E{ycn
BCPL F6{bjv2A
GET "LIBHDR" /Id%_,}Kb
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LET START () BE *=I}Qh(1
$( #/<&*Pu5t
WRITES ("Hello, world!*N") U5.LDv;
$) /q`xCS
V13N}]
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Befunge ?1K#dC52#
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< xY^%&n
+++++++++++++++.>.+++.------.--------.>+.>. NP/Gn6fr
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C :6 Lx@
#include <stdio.h> h _+dT
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int main(void) 42(Lb'G
{ m0;CH/D0
printf("Hello, world!\n"); 7KAO+\)H^Y
return 0; uJC~LC N
}
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C++
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#include <iostream> ~5CBEIF(NS
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int main() 65#'\+
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std::cout << "Hello, world!" << std::endl; C,ARXW1
return 0; V`XNDNJ:
} K,:cJ
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C++/CLI ;
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int main() W"}M1o
{ lTV'J?8!-a
System::Console::WriteLine("Hello, world!"); !y@NAa0
} ZK@N5/H(
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C# (C Sharp) 3TY5 ;6
class HelloWorldApp 117EZg]O
{ JNt^ (z
public static void Main() LE9(fe) fe
{ %t" CX5n
System.Console.WriteLine("Hello, world!"); DVB{2~7 4
} ,+meT`'vn
} C9n?@D;S
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COBOL w35J.zn
IDENTIFICATION DIVISION. h?BFvbAt
PROGRAM-ID. HELLO-WORLD. qB0E_y)a
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ENVIRONMENT DIVISION. r^3acXl
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DATA DIVISION. Vzdh8)Mu\
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PROCEDURE DIVISION. .<x&IJ /
DISPLAY "Hello, world!". q_g+Jf
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STOP RUN. gcPTLh[^Er
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Common Lisp
-QM:
q
(format t "Hello world!~%") Po__-xN>Q
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J'SZ
DOS批处理 +e yc`J
@echo off '_w=k4
echo "Hello, world!" vY }A
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Xm%D><CC8"
Eiffel E.7
class HELLO_WORLD =BSzsH7
;V*R*R
creation XQ9O$
~q
make 5!DBmAB
feature rz wF~-m +
make is [SHXJ4P*
local -Zf@VW,NI
io:BASIC_IO TcjEcMw,
do \r /ya<5
!!io h]+C.Eqnt#
io.put_string("%N Hello, world!") 66/3|83Z
end -- make v 1z
end -- class HELLO_WORLD - }7e:!.
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Erlang hAYTj0GZ
-module(hello). A+SE91m
-export([hello_world/0]). SM0~fAtE
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hello_world() -> io:fwrite("Hello, World!\n"). 1crnmJ!C
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Forth u<3HQ.:;
." Hello, world!" CR 1rv)&tKs
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Fortran "uuVy$6C
WRITE(*,10) i5Zk_-\#H
10 FORMAT('Hello, World!') 9xO#tu]
STOP ?WF/|/
END @hJ%@(
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HTML Bg&i63XL$$
<HTML> p<TpK )
<HEAD> ?]Pmxp
H}
<TITLE> Hello World! </TITLE> |B'9\OkP[=
</HEAD> qUjmB sB
<BODY> {;N,t]>8M
<p>Hello World!</p> 6|aKL[%6
</BODY> jGXO\:sO
</HTML> ofPHmh`
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INTERCAL ~%^
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PLEASE DO ,1 <- #13 bu:S:`
DO ,1 SUB #1 <- #238 rqdE6y+^
DO ,1 SUB #2 <- #112 kSR\RuY*
DO ,1 SUB #3 <- #112 8Eakif0CO
DO ,1 SUB #4 <- #0 IhA5Wt0j
DO ,1 SUB #5 <- #64 12;8o<~
DO ,1 SUB #6 <- #238 gCioq.
DO ,1 SUB #7 <- #26 4SlADvGl
DO ,1 SUB #8 <- #248 : YXX8|>
DO ,1 SUB #9 <- #168 zA$k0p
DO ,1 SUB #10 <- #24 E=e*VEjy
DO ,1 SUB #11 <- #16 l^|UCgRn
DO ,1 SUB #12 <- #158 ]8Q4BW
DO ,1 SUB #13 <- #52 k 8UO9r[
PLEASE READ OUT ,1 1QLbf*zeIW
PLEASE GIVE UP r<K(jG[:{f
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Java Sx?ua<`:d
public class Hello JHz
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{ r30 <