“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。 &*,:1=p
H#d:kil Ny
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》。 %1U`@0
9}tG\0tL*
以下是用不同语言写成的Hello World程序的几个例子: h8 @
Ada @9G- m(?*
with Ada.Text_Io; use Ada.Text_Io; df*w>xS
procedure Hello is RuRt0Sd3
begin f"5g>[1
Put_Line ("Hello, world!"); +Ezgn/bS&
end Hello; JWO=!^
$.mQ7XDA9
]o/|na*
汇编语言 <fO4{k*&
_%@=Uc6V
x86 CPU,DOS,TASM '` CspY
MODEL SMALL
\' li
IDEAL y }2F9=
STACK 100H `TKD<&oL
$ChK]v
6C
DATASEG }-<zWI{p
HW DB 'Hello, world!$' qCMl!g'
]dPZ .r
CODESEG p='-\M74K
MOV AX, @data deX5yrvOie
MOV DS, AX hP@(6X,"
MOV DX, OFFSET HW wo^Sy41bF
MOV AH, 09H (&\aA 0-}H
INT 21H ;e8V
+h
MOV AX, 4C00H ik,lSTBD
INT 21H in%;Eqk
END PH4%R]{8{
;&;W
T
Ze^jG-SL$9
x86 CPU,GNU/Linux,NASM 2(YPz|~W
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). rw%l*xgX
;Enter this into "hello.asm" then type: !$qKb_#nC
;"nasm -f elf hello.asm" i, n D5@#
;"ld hello.o -o hello" ]rBM5~
;"./hello" )hKS0`$|
}OShT+xeX
section .data ;data section declaration GJ(d&o8
msg db 'Hello World!',0AH CZ{k@z`r
len equ $-msg ;string length ` (4pu6uT
P* #8ZMA<
section .text ;code section declaration J]/}ojW3
global _start ;entry point (start of execution) <&!]K?Q9i
_start: mov edx,len ;string length lT8\}hNI+
mov ecx,msg ;string start @Cq? :o<
mov ebx,1 ;file handle: stdout L):U"M>]=
mov eax,4 ;sys_write =v6*|
int 80h ;kernel system call 5"Kx9n|
5 MxL*DB=b
mov ebx,0 ;return value @$@mqHI}
mov eax,1 ;sys_exit %,*$D}H
int 80h ;kernel system call {==pZpyyh
=(r*
5vd
$6f\uuTU2"
x86 CPU,Windows,MASM32 B)SLG]72f
.386 vFmJ;J
.model flat,stdcall "kW!{n
option casemap:none TJ@Cj y%
;Include 文件定义 D #2yIec
include windows.inc zri}
h/{
include user32.inc /M0/-pV9
includelib user32.lib N> Jw
include kernel32.inc zzpZ19"`1
includelib kernel32.lib ^+70<#Xc
;数据段 "
BTE
.data F
8yF
szCaption db 'A MessageBox!',0 %oykcf,#
szText db 'Hello,world!',0 }E<^gAh}
;代码段 L wJ0
.code x ,/TXTZ6
start: Ps[$.h
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK eH>#6R1-
invoke ExitProcess,NULL "AueLl)
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> c$E)P$<j
end start `i!wq&1g7
>
dZ3+f
!4#"!Md4o
AWK DtCEm(b0
BEGIN { print "Hello, world!" } 8pZ<9t'
t@zdmy
'w/qcD-
BASIC "`tXA
传统版BASIC(例如GWBASIC): 0Dv JZ|e
!-]C;9Zd
10 PRINT "Hello, world!" ~XM[>M\qB
20 END 8}p8r|d!ls
<EX7WA
或在提示符输入: |(IO=V4P
Rhgj&4
?"Hello, world!":END h,t|V}Wb
.=RlOK
现代版BASIC(例如Quick BASIC): !F4;_A`X
JMV50 y
Print "Hello, world!" 3 pWM~(#>-
+JdZPb
以下的语句在Quick BASIC中同样有效: {Q(}DI
:>3=gex@^0
? "Hello,world!" dz9Y}\2tf
g$37;d3Tx
cA`4:gp
BCPL ~4 #B'Gy[
GET "LIBHDR" Wsz0yHD[`
.jg0a
LET START () BE
Se^^E.Z,W
$( D9ufoa&ua
WRITES ("Hello, world!*N") xh9qg0d
$) LgqGVh3\s
$n=lsDnhQ
h BMH)aU
Befunge l[h'6+o
"!dlrow olleH">v .-I|DVHe
, TR vZ
^_@ cgZaPw2
bw
}7/e8 O2
UGKaOol.
Brainfuck ?bX
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< }6m?d!m
+++++++++++++++.>.+++.------.--------.>+.>. m\0cE1fir
mw$Y
C".1+Um
C S'i;xL>
#include <stdio.h> kT oOIx
b Y8GA
int main(void) I<\
'%
{ Buc_9Kzw<+
printf("Hello, world!\n"); 19u =W(
return 0; oVO.@M#
} D,;\F,p
+++pI.>(*Q
649 !=
C++ 7k8n@39?
#include <iostream> Di(9]:+
:b#%C
pR
int main() i.a _C'<$
{ 7nE"F!d+0
std::cout << "Hello, world!" << std::endl; `u'dh{,gE
return 0; IM(u<c$
} e<+<lj"
!c(QSf502
d,#.E@Po
C++/CLI GrI&?=S^
int main() ocA]M=3~k
{ wT_^'i*@I
System::Console::WriteLine("Hello, world!"); o#hI5
} KX+ey8@[
C7"HQQ
?-~I<f]_
C# (C Sharp) D guB
class HelloWorldApp !q/5yEJ>h
{
M[P^]J@
public static void Main() POd/+e9d
{ bg7n
System.Console.WriteLine("Hello, world!"); 05e>\}{0
} Wr%7~y*K
} I48VNX
,@CfVQz
LJuW${Y
COBOL 8C&x MA^
IDENTIFICATION DIVISION. 9C}qVoNu
PROGRAM-ID. HELLO-WORLD. {U @3yB
8I#D`yVKc
ENVIRONMENT DIVISION. +<(a}6dt
&^QPkX@p
DATA DIVISION. AlX3Wv}
Ie_I7YJ
PROCEDURE DIVISION. y?:dE.5p|
DISPLAY "Hello, world!". YMzBAf
STOP RUN. Go8F5a@j
!D:k!
F@SG((`
Common Lisp *@M3p}',M
(format t "Hello world!~%") %J P!{mqj
Da,Tav%b
8 njuDl
DOS批处理 X#J6Umutm
@echo off \ lr/;-zP
echo "Hello, world!" __\P`S_
rw u3Nb
*o4%ul\3Y|
Eiffel A~71i&
class HELLO_WORLD ZgYZwc&-
rz
creation &?<AwtNN
make _Z#eS/,O@
feature 8&(-8
make is fPQ|e"?
local F=Y S^
io:BASIC_IO [MmM 9J["
do \qq-smcM-
!!io z,Xk\@
io.put_string("%N Hello, world!") 5si}i'in
end -- make 7'.s7&
'7
end -- class HELLO_WORLD %C*^:\y
gGbI3^r#
PrnrXl
S
Erlang n`<S&KP|
-module(hello). eV;me>,
-export([hello_world/0]). G11cNr>*
2ksA.,UB^9
hello_world() -> io:fwrite("Hello, World!\n"). )Vk:YL++
JMsHK,(
%zljH"F
Forth n7iE8SK|k
." Hello, world!" CR U$J5r+>
I: U$
$c=&0yt5
Fortran oyvtZ/@
WRITE(*,10) SaNN;X0
10 FORMAT('Hello, World!') CA^.?&CH^O
STOP Je~p%m#e;K
END P(_(w
9
2Ow<`[7
a<p
%hY3
HTML EA yukM2
<HTML> q$ >_WF#||
<HEAD> 1n3$V:00
<TITLE> Hello World! </TITLE> ~e^)q>Lb7(
</HEAD> w2Kq(^?
<BODY> Bbs 0v6&,
<p>Hello World!</p> [4gjC
</BODY> IwRQL%
</HTML> BE4\U_]a3
NbDda/7ki
yWuIu>VJ
HQ9+ I9/KM4&
H %UG/ak%z
)E~mJln
taV|YP$
INTERCAL F@^N|;_2
PLEASE DO ,1 <- #13 PP4d?+;V
DO ,1 SUB #1 <- #238 IUawdB5CB
DO ,1 SUB #2 <- #112 ,.7vBt6 p
DO ,1 SUB #3 <- #112 !E0fGh
DO ,1 SUB #4 <- #0 MPG+B/P&
DO ,1 SUB #5 <- #64 g RU-g
DO ,1 SUB #6 <- #238 )@$
&FFIu
DO ,1 SUB #7 <- #26 $i%HDt|
DO ,1 SUB #8 <- #248 m3"c (L`B
DO ,1 SUB #9 <- #168 dqz1xQ1
DO ,1 SUB #10 <- #24 E{oB2;P
DO ,1 SUB #11 <- #16 8bGD
DO ,1 SUB #12 <- #158 c}cG<F
DO ,1 SUB #13 <- #52 %&1$~m0
PLEASE READ OUT ,1 E7LbSZ
PLEASE GIVE UP X|)Il8
B$`d&7I;D
$QffrU'
Java '\'7yN'
public class Hello eoL0^cZj
{ ?\d5;%YSr
public static void main(String[] args) FvA|1c
{ @7X\tV.Z
System.out.println("Hello, world!"); QX+Y(P`vMK
} 'A1E^rl]=
} *vD/(&pQ1:
W
U0UG$o`
0#]!#1utg
JSP ChVY
Vx(
<% i6A$1(:h
out.print("Hello, world!"); oVreP
%> 8xgc[#
!xH,y
|i s 9
MIXAL Crg#6k1~EN
TERM EQU 19 the MIX console device number L:^Y@[f
ORIG 1000 start address x3_,nl
START OUT MSG(TERM) output data at address MSG R/rcXX7%
HLT halt execution 9Q=>MOB-
MSG ALF "MIXAL" qw)Key
ALF " HELL" %0 qc@4
ALF "O WOR" 2X^iV09
ALF "LD " fGo_NB
END START end of the program kp.|gzA6
Ltl]j*yei
_rG-#BKW8L
Nuva 3U>S]#5}
<..直接输出..> wH!}qz/
Hello, world! H!#5!m&
Z{
%Uw;d
<..或者..> ^X$
I= ro
wNbTM.@
<. P2 |}*h5(
// 不带换行 g\qX7nIH?
? "Hello, world!" (\tq<h0
FfjC
M7?
// 或者 WEps.]s
}il%AAI9}r
// 带换行 cS5w +`,L
?? 'Hello, world!' zK,~ 37)\
.> "wF*O"WQo
C\J@fpH(t`
#'#4hJ*YC
OCaml Vj29L?3
let main () = VDPxue
print_endline "Hello world!";; g8Ok ^
$=7H1 w
j#CuR7m
Pascal s^obJl3
program Hello; rx{#+iw
begin 1RURZoL
writeln('Hello, world!'); F61+n!%8
end. 2k%Bl+I
+7`u9j.
X3<SP
Perl Yo>%s4_,
#!/usr/local/bin/perl DCz\TwzU
print "Hello, world!\n"; BzN/6VEw
3HXh6( e
;U8dm"
PHP YHJ'
<?php 7eTA`@v5A
print("Hello, world!"); ;.L!%$0i#
?> `Uu^I
69N1 mP
)0'Y et}
Pike K~P76jAe$
#!/usr/local/bin/pike HE9.
k.sS
int main() U9bFUK/z
{ kVy"+ZebK
write("Hello, world!\n"); FW/6{tm
return 0; 1a \=0=[
} M_yZR^;^-
oC5gME"2
N45s'rF
PL/I F>p%2II/
Test: procedure options(main); hU |LFjc
declare My_String char(20) varying initialize('Hello, world!'); Mf!owpW
T
put skip list(My_String); ,^Ex}Z
end Test; ))c*_n
bBd *}"v^"
RJQ/y3
Prolog >:="?'N5l!
goal g]:..W7
write("hello,world!"). o,iS&U"TC
4&#vU(-H
R9S7_u
Python $[WN[J
#!/usr/local/bin/python x*3@,GmZl
print "Hello, world!" y[TaM9<
?U7&R%Lh`
n\~"Wim<b
REXX Z#H@BWN7
say "Hello, world!" dP$y>%cB
0%v ixR52
L2:oZ&:u`J
Ruby i(dXA(p
#!/usr/bin/ruby B(HNB\3u
print "Hello, world!\n" CR} >
u0<d2Y
c }g$1of87
Scheme \mqhugy
(display "Hello, world!") \UVT_=Y
(newline) F0DPS:c
b#bO=T$e-
fo/(()
sed (需要至少一行输入) qg/Y;tGSx
sed -ne '1s/.*/Hello, world!/p' pmE1EDPag
Nj! R9N
ZYpD8u6U
Smalltalk cj,&&3sbV
Transcript show: 'Hello, world!' &