“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。 +7sdQCO(Co
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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》。 _0oZgt)
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以下是用不同语言写成的Hello World程序的几个例子: @Ys(j$U't
Ada ~*L H[l>K
with Ada.Text_Io; use Ada.Text_Io; #v89`$#`2
procedure Hello is !#f4t]FM`B
begin $gJMF(
Put_Line ("Hello, world!"); qV/"30,K
end Hello; ]\+bx=
6i9m!YQV
6!+xf
汇编语言 jQ%}e"
[\ @!~F{
x86 CPU,DOS,TASM :>F:G%(DK
MODEL SMALL O)\xElu
IDEAL O>n L;I
STACK 100H n"@3d.21
+M-' K19
DATASEG ag:#82C
HW DB 'Hello, world!$' wZE[we^Q"
RLw=y{%p
CODESEG D<5gdIw
MOV AX, @data
MOV DS, AX b?B"u^b!
MOV DX, OFFSET HW vTh-I&}:
MOV AH, 09H d,8V-Dk+p
INT 21H `axNeqM
MOV AX, 4C00H 3P^eD:)
w
INT 21H MR#jI
END D7sw;{ns
I@pnZ-5
c?V,a`6
x86 CPU,GNU/Linux,NASM 44kY[jhf
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). lY?TF
;Enter this into "hello.asm" then type: 1YAy\F~`.
;"nasm -f elf hello.asm" k3sP,opacX
;"ld hello.o -o hello" $Z.c9rY1
;"./hello" O4]Ss}ol
&|n*&@fF
section .data ;data section declaration I"Ju3o?u
msg db 'Hello World!',0AH C]A*B
len equ $-msg ;string length AJCWp4,
A>R ^iu
section .text ;code section declaration }b)?o@9}:
global _start ;entry point (start of execution) 5\:#-IYJ
_start: mov edx,len ;string length s^L\hr
mov ecx,msg ;string start jM2gu~
mov ebx,1 ;file handle: stdout B?#@<2*=L
mov eax,4 ;sys_write &fiDmUxj
int 80h ;kernel system call gA" =so
0EPF;
Xx
mov ebx,0 ;return value hL67g
mov eax,1 ;sys_exit P:ys--$"
int 80h ;kernel system call
4>0xS-
:bLGDEC
B 8C3LP}?
x86 CPU,Windows,MASM32 %QwMB`x
.386 *M"lUw#(f
.model flat,stdcall &b"PjtU.X
option casemap:none FRs5 Pb1
;Include 文件定义 w2/%e$D!9
include windows.inc zT!JHG
include user32.inc nzhQ\'TC
includelib user32.lib <:q]t6]$
include kernel32.inc _Xsn1
includelib kernel32.lib i"Ct}7i
;数据段 "W\
#d
.data &NHIX(b6
szCaption db 'A MessageBox!',0 D2>=^WP6+
szText db 'Hello,world!',0 "84.qgYaG
;代码段 OwSr`2'9
.code SV6Np?U
start: +qzsC/y
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
M"X/([G
invoke ExitProcess,NULL n?kU
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ${6 ;]ye
end start { F.Ihw
.'__ [|-{;
\W/cC'
AWK +es.V
/
BEGIN { print "Hello, world!" } V%o:Qa[a
c9r2kc3cy{
jUW{Z@{U
BASIC v,Ep2$
传统版BASIC(例如GWBASIC): z Lf^O%zN
oE-i`;\8
10 PRINT "Hello, world!" o#%2N+w
20 END R%7k<1d'`
-qid.
或在提示符输入: 'hU&$lgMF
a l#yc
?"Hello, world!":END *(D_g!a
CFRo>G
现代版BASIC(例如Quick BASIC): z~z.J]
DC[-<:B
Print "Hello, world!" ;9B:E"K?@1
}6^(
以下的语句在Quick BASIC中同样有效: B0Xn9Tvk
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? "Hello,world!" zzq/%jki
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z'fGHiX7.0
BCPL XK(<N<Z@|e
GET "LIBHDR" ew}C*4qH
}1X,~y]
LET START () BE A
g/z\kX
$( 9FJU'$FN
WRITES ("Hello, world!*N") h+N75
$) ;}^Pfm8
J~n{gT<L
'T+3tGCy+
Befunge P(A%z2Ql
"!dlrow olleH">v NrS1y"#d9
, 3YA !2
^_@ urXM}^
?\ho9nyK
|W\CV0L2
Brainfuck Vj~R6
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< I-fs*yzj;8
+++++++++++++++.>.+++.------.--------.>+.>. 5hg>2?e9s?
-kQ{~">w
h'IBVI!P
C h2h$UZIv
#include <stdio.h> V1#/+~
t=A|
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int main(void) Wc-P= J*m
{ mP3:Fc_G
printf("Hello, world!\n"); Q:=s99
return 0; u )
fbR
}
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i aP+Vab
%<I0-o
C++ 4y%N(^
#include <iostream> y5+-_x,
9I^_n+E
int main() ]yCmGt+b
{ SGjaH8z
std::cout << "Hello, world!" << std::endl; 2JtGS-t
return 0; 3#0nus|=S
} \*d@_oQ$
1*;?uC\
ZaXK=%z
C++/CLI hMi!H.EX.
int main() :~U1JAs$
{ ;) (qRZd6
System::Console::WriteLine("Hello, world!"); <f{m=Dc
} DRf~l9f
z\fD}`^8
dtm_~r7~
C# (C Sharp) kwZC3p\\
class HelloWorldApp 1sn!!
{ ^>[DG]g
public static void Main() ]<W1edr
{ X-~Q
System.Console.WriteLine("Hello, world!"); V,|9$A;
} $0iz;!w
} w?<:`
<(#cPV@j
6t/})Xv
COBOL |~v($ c
IDENTIFICATION DIVISION. j!:U*}f
PROGRAM-ID. HELLO-WORLD. #@lr$^M
-v >BeVF
ENVIRONMENT DIVISION. E62VuX
,7/un8:%c
DATA DIVISION. jwAO{.}T1r
gh i!4
PROCEDURE DIVISION. B:+}^=
DISPLAY "Hello, world!". }u:^ Mz
STOP RUN. dpE\eXoa,
{&w%3
}wj*^>*
Common Lisp )k29mqa`
(format t "Hello world!~%") BQ_\8Qt|
7{az %I$h
sy/J+==
DOS批处理 ][wS}~):
@echo off 6sB!m|zm]:
echo "Hello, world!" ~]c^v'k
:M|bw{P*
as~. XWa
Eiffel br$!}7#=L
class HELLO_WORLD bs%]xf
~D;
|(XV '-~
creation |W*f6F3
make |[k6X=5
feature &\Cvrxa
make is t$Irr*
local kFD-
io:BASIC_IO !j YV,:'
do ,,BNUj/:
!!io CAcnH
io.put_string("%N Hello, world!") HzbO#)Id-I
end -- make rYm<U!k
end -- class HELLO_WORLD ,u~\$Az6
K=`*cSU>
Zd~s5
Erlang f()^^ +
-module(hello). hn!$?Vo.
-export([hello_world/0]). S$muV9z2=
0b*a2_|8k
hello_world() -> io:fwrite("Hello, World!\n"). u$<FKp;I
`yuD/-j
B*DH^";t
Forth qc*+;Wi+5
." Hello, world!" CR
]
mP-HFl
m\@Q/_v
;]nU->
Fortran @&EE/j^
WRITE(*,10) 3]}W
10 FORMAT('Hello, World!') 66Hu<3X P
STOP >|z=-hqPK
END #/1A:ig
TU[f"!z^
S@_@hFV jd
HTML #+ n
&
<HTML> ZMx_J
<HEAD> ZTt%7K"L
<TITLE> Hello World! </TITLE> lD C74g
</HEAD> %@pTEhpF
<BODY> cpE&Fba}"
<p>Hello World!</p> @}fnR(fS
</BODY> \V:
_Zs
</HTML> 7Jc=`Zm'
VT'$lB%IK
WQ"ZQ
HQ9+ zh50]tX
H G9VzVx#T#
:B=`^>RK
_f34p:B%s
INTERCAL Ii[rM/sG
PLEASE DO ,1 <- #13 VK`b'U&l"
DO ,1 SUB #1 <- #238 9=JU&/!
DO ,1 SUB #2 <- #112 aty
K^*aX
DO ,1 SUB #3 <- #112 dc lJ
DO ,1 SUB #4 <- #0 NPS=?5p>
DO ,1 SUB #5 <- #64 V?Nl% M[b
DO ,1 SUB #6 <- #238 %
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DO ,1 SUB #7 <- #26
QAb[M\G
DO ,1 SUB #8 <- #248 2d1'!B
zDA
DO ,1 SUB #9 <- #168
gB~SCl54
DO ,1 SUB #10 <- #24 WtlIrdc
DO ,1 SUB #11 <- #16 rx^pGVyg
DO ,1 SUB #12 <- #158 0/] @#G2
DO ,1 SUB #13 <- #52 7r}gS2d
PLEASE READ OUT ,1 #c!(97l6o
PLEASE GIVE UP KCCS7l/
D=dY4WwG
$X\BO&
Java 6xBP72L;%"
public class Hello C2Y&qX,
{ Wm3H6o*
public static void main(String[] args) {z.}u5N
{ 46e;UUf!d
System.out.println("Hello, world!"); j|? bva\
} \sRRLDj%
} ;#Mq=Fr-SG
q5OW1%
EG9S?
$
JSP 9:=a FP
<% y>~KeUC
out.print("Hello, world!"); /6S/a*`<X
%> n+!.0d}6
Box,N5AA
1W/=
=+%I
MIXAL .R-:vU880
TERM EQU 19 the MIX console device number "[#jq5>
:
ORIG 1000 start address F48`1+
START OUT MSG(TERM) output data at address MSG h_CeGl!M}
HLT halt execution PDpIU.=!0
MSG ALF "MIXAL" Uf\*u$78
ALF " HELL" 0p[$8SCJ
ALF "O WOR" "&2D6
ALF "LD " UiYA#m
END START end of the program *~:@xMa
Bj]0Cz
X2Lhb{ZHE
Nuva }]n&" =Zk-
<..直接输出..> {{<o1{_H
Hello, world! G:@gO2(D
[e&$4l IS
<..或者..> iK.MC%8?
IGB>8$7
<. @Qx;J<{+g
// 不带换行 a7d782~
? "Hello, world!" W)9KYI9u
:'rXu6c-
// 或者 n%?g+@y,^
1C|j<w=i
// 带换行 hU4~`gp
?? 'Hello, world!' Stp??
.> 8a05`ZdP
;yUY|o
{fGi:b\[ 8
OCaml lYZHM,"
let main () = -6H)GK14b
print_endline "Hello world!";; chiQ+
&[s^`e
[I^SKvM
Pascal 1-qQp.Wj
program Hello; 4wBCs0NIm
begin
NOQgkN
writeln('Hello, world!'); }$UuYO/i
end. Z]Qm64^I
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0dgR;Dl(
Perl `i.f4]r
#!/usr/local/bin/perl F-=er e
print "Hello, world!\n"; eEU:
Z
v~
A9bB
*v8 ]99N
PHP -J[D:P.Z
<?php C'=C^X%
print("Hello, world!"); ;pU LJ}rDb
?> O}KT>84M
Xz5=fj&
VyI%^S
]sS
Pike .KB*u*h
#!/usr/local/bin/pike
:zZtZT!
int main() e~-Dk .i
{ TIvLY5 HG
write("Hello, world!\n"); 6}|vfw
return 0; jV7q)\uu^
} r[?rwc^
%`}Qkb/Lyh
wIY#TBu
PL/I ]Wy V bIu
Test: procedure options(main); *wSl~J|ZM%
declare My_String char(20) varying initialize('Hello, world!'); #Y{"`5>
put skip list(My_String); &FK=w]P
end Test; HML6<U-eS
3^fZUldf
!~mN"+u&
Prolog %V+,#
goal ~ h:^Q
write("hello,world!"). ^<E,aCy
"~+K`*0r8
~\oJrRYR`
Python SS`\,%aog
#!/usr/local/bin/python vw(};)8
print "Hello, world!" '/"( `f,
{bNnhW*qOu
i\<l&W
REXX =9)ypI-2
say "Hello, world!" =*(d+[_
xQD#;
7
G's/Q-'[\
Ruby vAVoFL
#!/usr/bin/ruby T&S<