“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。 G l/3*J
.\H-?6R^
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》。 &2:WezDF
!rgXB(
以下是用不同语言写成的Hello World程序的几个例子: zx)}XOYf
Ada <O)
if^
with Ada.Text_Io; use Ada.Text_Io; L]=mQo
procedure Hello is s
j-oaWt
begin =WN8><K!
Put_Line ("Hello, world!");
$o9^b
Z
end Hello; :hOB
y< gRl/e
'3^_:E5y
汇编语言 %dw0\:P?Q
8F\'?7
x86 CPU,DOS,TASM B$c'^
)
MODEL SMALL #U'}g *
IDEAL H^*[TX=#[
STACK 100H CWZv/>,%
j}lne^ h
DATASEG !]"M]tyv\
HW DB 'Hello, world!$' Fu?_<G%Ynp
xNY&*jI
CODESEG |1kA6/
MOV AX, @data hRKJKQ@7
MOV DS, AX -=
c&K&
MOV DX, OFFSET HW S]E|a@kD3
MOV AH, 09H DM6(8df(
INT 21H u<"-S63+
MOV AX, 4C00H vzAY+EEx
INT 21H 1OY
5tq
END z xgDaT
m k~F@
0I)eYksh
x86 CPU,GNU/Linux,NASM M G&vduu
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Cjt].XR@
;Enter this into "hello.asm" then type: R8.@5g_
;"nasm -f elf hello.asm" c ~M'O26bW
;"ld hello.o -o hello" r"L:Mu
;"./hello" ER`;0#3[9u
H(?+-72KX
section .data ;data section declaration
B*`[8kb,
msg db 'Hello World!',0AH DbI)tDi5D
len equ $-msg ;string length 9u^za!pE
,~=+]9t
section .text ;code section declaration )fuAdG
global _start ;entry point (start of execution) 4,`t9f^:
_start: mov edx,len ;string length ZDK+>^A)
mov ecx,msg ;string start FKtCUq,:
mov ebx,1 ;file handle: stdout CW@EQ3y0
mov eax,4 ;sys_write ;[C_ho
int 80h ;kernel system call KVC18"|f
aB&a#^5CI
mov ebx,0 ;return value 9nd,8Nji
mov eax,1 ;sys_exit N+UBXhh
int 80h ;kernel system call oj6=.
\J~@r1
7CU<R9Kl
x86 CPU,Windows,MASM32 BMzS3;1_
.386 d^Cv9%X
.model flat,stdcall &x.5TDB>%
option casemap:none .4z_ohe
;Include 文件定义 9-Qu5L~
include windows.inc H8Ra !FW@
include user32.inc IYr4
includelib user32.lib )\e0L/K@
include kernel32.inc LK|rLoia:
includelib kernel32.lib >U:.5Tch'V
;数据段 bT:;^eG"
.data c~Y g(
szCaption db 'A MessageBox!',0 [{F;4>g
szText db 'Hello,world!',0 =dQ46@
;代码段 ~c,+)69"T
.code ZB$,\|^6
start: hs)_h^P
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK d~CZ9h
invoke ExitProcess,NULL &
@$ D(
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1VXn`O?LW
end start (Kkqyrb
#9(iu S+BU
Y0Rk:Njc
AWK St3/mDtH
BEGIN { print "Hello, world!" } !J}Q%i
H"JzTo8u
F @!9rl'
BASIC mj& 4FQ#O*
传统版BASIC(例如GWBASIC): t%s(xz#1
T ^`R
10 PRINT "Hello, world!" *kGk.a=
20 END |r`0< `
cS|W&IH1
或在提示符输入: %&$s0=+
eeUEqM$7EX
?"Hello, world!":END :N=S nyz
Ap(>mUs!i
现代版BASIC(例如Quick BASIC): Qv;^nj{\qV
;3O=lo:$~
Print "Hello, world!" ^hwTnW9Z1:
>s%m\"|oh
以下的语句在Quick BASIC中同样有效: /n9,XD&)
UDgUbi^v|D
? "Hello,world!" %c&<{D}r
'oM&Ar$
)K0rPnYV
BCPL 8{%[|Ye
GET "LIBHDR" I|P#|0< 2
;0 9~#Wop
LET START () BE ftqeiZ
2
$( 2$>
<rB
WRITES ("Hello, world!*N") O&PrO+&
$) ^' b[#DG>F
V%w]HIhq
x)2ZbIDB:"
Befunge MM/D5g
"!dlrow olleH">v :&=`xAX-
, U=KFbL1Q
^_@ X_J(P?
$-BM`Zt0;
X=X
Brainfuck dj:6c@n
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ,a@jg&Mb]
+++++++++++++++.>.+++.------.--------.>+.>. T oK'Pd
+Ft@S(IE
oAq<ag\qV
C =8 Jq'-da
#include <stdio.h> /HM0p
OYk/K70l3
int main(void) uU`Mq8)R
{ ,=t}|!jx
printf("Hello, world!\n"); {edjvPlk
return 0; kiR+ Dsl
} gO]jeO
`BKV/Xl
,wH]|`w
C++
5wy3C
#include <iostream> $r/tVu2!W
uY$BZEuAZ
int main() t8z=R6zX
{ J*"G*x#u
std::cout << "Hello, world!" << std::endl; wD`jks
return 0; *gL-v]V
} UZ 6:vmcT
Ab)X/g-I@
L3^+`e
C++/CLI 5(&'/U^
int main() i| OG#PsY-
{ ~_hn{Ous
System::Console::WriteLine("Hello, world!"); (GDW9:
} YhFd0A?]
}SBpc{ch
^@n?&
C# (C Sharp) LHgEb9\Q
class HelloWorldApp nv2p&-e+
{ ]='zY3
public static void Main() 9/I|oh_
G
{ C.q4rr
System.Console.WriteLine("Hello, world!"); .Fn7yTQ%
} ;UDd4@3`S"
} KMogwulG
?CUGJT
u|D|pRM-LT
COBOL je^=g nq
IDENTIFICATION DIVISION. $Z{Xt*
PROGRAM-ID. HELLO-WORLD. 2<8JY4]!]
3YOYlb %j
ENVIRONMENT DIVISION. s^Rig[
+*ZF52hy|
DATA DIVISION. A&/YnJ"
u:s[6T0
PROCEDURE DIVISION. ubQZTA x
DISPLAY "Hello, world!". jxNnrIA
STOP RUN. Avn)%9
MWron_xg
z~O:w'(g
Common Lisp x72T5.
(format t "Hello world!~%") $@Kwsoh'
z)U/bjf
Sk|DVV$
DOS批处理 wDz}32wB
@echo off UbSAyf
echo "Hello, world!" ftwn<B
cfA)Ui
0L|D1_k[
Eiffel E\dJb}"x %
class HELLO_WORLD /#xx,?~xx0
S"G`j!m1
creation 2
rx``,7Q
make [|"{a
feature `c%{M4bF\
make is x|`o7.
local )$7-CNWr~
io:BASIC_IO Emx`+9
do Fl0 :Z
!!io T+U,?2nF:
io.put_string("%N Hello, world!") >,)tRQS
end -- make ;ro%Wjg`}
end -- class HELLO_WORLD :FqHMN
1a>TJdoa
>%{H>?Hn
Erlang Y$&+2w,)H,
-module(hello). #Z>EX?VS:
-export([hello_world/0]). t1MK5B5jH
N#zh$0!8bJ
hello_world() -> io:fwrite("Hello, World!\n"). TZYz`l+v
l0-zu6iw
mel(C1b"j/
Forth }6!*H!
." Hello, world!" CR 40)Ti
4fa2_
w_lN[u-L
Fortran _@:O&G2nB
WRITE(*,10) P!K;`4Ika
10 FORMAT('Hello, World!') W2W4w
STOP mKN#dmw6
END N!iugGL
5}MjS$2og
4J${gcju
HTML 5
i;n:&Y
<HTML> deVbNg8gs
<HEAD> UG:S! w'
<TITLE> Hello World! </TITLE> na,i(m?l
</HEAD> 1]% ]"JbV
<BODY> %6eQ;Rp*
<p>Hello World!</p> +(l(|lQy$
</BODY> >4&s7][Q|
</HTML> NT&skrzW
pRrokYM
d
wseb]=U
HQ9+ k1HVvMD<
H dD.;P=AP
IP=."w
FhVoN}
INTERCAL lbUUf}
PLEASE DO ,1 <- #13 nOj0"c
DO ,1 SUB #1 <- #238 # )]L3H<
DO ,1 SUB #2 <- #112 ;N;['xcx;
DO ,1 SUB #3 <- #112 y $6~&X
DO ,1 SUB #4 <- #0 }G53"
DO ,1 SUB #5 <- #64 B9i<="=p
DO ,1 SUB #6 <- #238 ,ctm;T1H+
DO ,1 SUB #7 <- #26
I("lGY
DO ,1 SUB #8 <- #248 g;To}0H
DO ,1 SUB #9 <- #168 j'M=+
DO ,1 SUB #10 <- #24 (>a8h~Na
DO ,1 SUB #11 <- #16 !bg2(2z
DO ,1 SUB #12 <- #158 |fhYft
DO ,1 SUB #13 <- #52 }{S
f*
PLEASE READ OUT ,1 yirQ
PLEASE GIVE UP 9w:9XziT
h}SP`
c|KN@)A
Java ?4A$9H
public class Hello bHf>EU
{ "s.]amC
public static void main(String[] args) tX@G`Mr(
{ R7Z7o4jg
System.out.println("Hello, world!"); "B3&v%b
} \~~y1.,U.
} i}E&mv'
+fRABY5C
Wi%e9r{hU
JSP rS&"UH?c7
<% `m7w%J.> n
out.print("Hello, world!"); ~H~iKl}|7
%> [,86||^
SL ) ope
i4s_:%+
MIXAL H2
Gj(Nc-
TERM EQU 19 the MIX console device number |Ta-D++]'
ORIG 1000 start address 2?)8s"Y
START OUT MSG(TERM) output data at address MSG pb5q2|u`h
HLT halt execution S<nf"oy_K
MSG ALF "MIXAL" UZJ<|[
ALF " HELL" +pG[
[}/
ALF "O WOR" v_L2>Pa.
ALF "LD " K2
b\9}
END START end of the program Uuq*;L
n3B#M}R
kX)QHNzP
Nuva .mwB'Ll
<..直接输出..> +]dh`8*8>1
Hello, world! H&_drxUq;L
G%FLt[
<..或者..> S\"#E:A
V''?kVJ
<. DqN<bu2
// 不带换行 "
.<>(bE
? "Hello, world!" s=[T,:Z
7I4<Dj
// 或者 KMll8X
|D1:~z
// 带换行 a4E{7c
?? 'Hello, world!' ,d`6
{ll
.> YHQvx_0yP
tRu j}n+x
oGvk,mh"(
OCaml e~P4>3
let main () = pgipT#_K
print_endline "Hello world!";; ?(R!BB
A!uO7".E
+Z=%4
Pascal + J` Qv,0
program Hello; (\M#Ay t)
begin ec3zoKtV
writeln('Hello, world!'); J5"d|i
end. >i!y[F
v9"|VhZ
PP&