“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。 b(9FZ]7S
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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》。 kI%%i>Y}
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以下是用不同语言写成的Hello World程序的几个例子: 7Pa@1']
Ada A&>.74}p
with Ada.Text_Io; use Ada.Text_Io; V2N_8)s9W
procedure Hello is L/"0ws_
begin LzYO$Ir:g
Put_Line ("Hello, world!");
>0l"P"]
end Hello; \W%UZs
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'=l[;Q^Q
汇编语言 <})'Y~i
7
[g/TB
x86 CPU,DOS,TASM EM\'GW
MODEL SMALL NKQOUw:qn
IDEAL IgC}&
STACK 100H ^{8Gt@
W\18{mbuy
DATASEG (ND4Q[*6
HW DB 'Hello, world!$' 1h.)#g?{
}. z&P'
CODESEG [~&XL0
MOV AX, @data .; )l
MOV DS, AX A'nq}t 3
MOV DX, OFFSET HW %$TGzK 1
MOV AH, 09H csfgJ^ n
INT 21H ^ "\R\COQ
MOV AX, 4C00H ^Idle*+
INT 21H C)cwAU|h#
END , lJv
JsotOic%
g(#f:"
x86 CPU,GNU/Linux,NASM }MlwC;ot
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `)QCn<
;Enter this into "hello.asm" then type: z)uuxNv[R
;"nasm -f elf hello.asm" 5Vi>%5A>l
;"ld hello.o -o hello" B<-kzt
;"./hello" lSH6>0#B
\%p34K\
section .data ;data section declaration yS=oUE$
msg db 'Hello World!',0AH t-LG }nv
len equ $-msg ;string length \w'*z&`W9
;*,f<
section .text ;code section declaration 5/O'R9A4
global _start ;entry point (start of execution) ++DG5`
_start: mov edx,len ;string length wfjnA~1h
mov ecx,msg ;string start fK(}Ce
mov ebx,1 ;file handle: stdout E_zIg+(+
mov eax,4 ;sys_write 5^j45'%I
int 80h ;kernel system call xzx$TUL
hI( SOsKs
mov ebx,0 ;return value M'!U<Y
-
mov eax,1 ;sys_exit [b$4Shx
int 80h ;kernel system call LzCw+@-umw
is/scv<
*OyHHq|>q
x86 CPU,Windows,MASM32 Zy09L}5 9P
.386 O-4C+?V
.model flat,stdcall r:]1O*
option casemap:none @9&P~mo/
;Include 文件定义 Y \:0Ev
include windows.inc SI8%M=P>
include user32.inc gsn)Wv$h
includelib user32.lib WAn'kA
include kernel32.inc 9+keX{/c
includelib kernel32.lib v
36%Pj`
;数据段 (L`j0kPN
.data ;m2<eS`o'
szCaption db 'A MessageBox!',0 rSYi<ku
szText db 'Hello,world!',0 BT@r!>Nl
;代码段 #:d
=)Qj0
.code r$wxk 4%Rz
start: ~gu3g^<0v
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK TB;o~>9U
invoke ExitProcess,NULL ^OErq&`u
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1J'3 g
end start "al`$ %(
?@n/v
F
6_4D9 W
AWK <`0h|m'U
BEGIN { print "Hello, world!" } i9=&;_z
3 LdQ]S
X*L;.@xA
BASIC &
=/
传统版BASIC(例如GWBASIC): ti &J
8?FbtBAn
10 PRINT "Hello, world!" vaon{2/I
20 END W}|'#nR
tbO
H#|
或在提示符输入: [7YPl9
Dn>%%K@0
?"Hello, world!":END LF0sH)e]
vO;I(^Q
现代版BASIC(例如Quick BASIC): CwJDmz\tk
Ks\ NE=;5
Print "Hello, world!" R-:fd!3oQ
lb:/EUd5
以下的语句在Quick BASIC中同样有效: ]
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M,5"b+mX[~
? "Hello,world!" \qUKP"dr
Q#IG;
`~X!Ll
BCPL F V,4pi
GET "LIBHDR" ,y%3mR_~
_Ob@`
LET START () BE @2*]"/)*0
$( iH.$f /)N
WRITES ("Hello, world!*N") 0
&GRPu27
$) g&n )fF
t&9A
]<n%,
\RVW
Befunge nbG/c80
"!dlrow olleH">v @X3{x\i'I
, D13Rx 6b
^_@ rcGb[=B f
2[gFkyqe
ykrr2x
Brainfuck @JW@-9/
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< _f6HAGDN
+++++++++++++++.>.+++.------.--------.>+.>. J6<rX[
yZe
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(8ht*b.5K
C *SO{\bu
#include <stdio.h> `EtS!zD~b
V_Wwrhua
int main(void) FE o269Ur
{ sN("+ sZ.n
printf("Hello, world!\n"); iZZ (4
return 0; -WQ^gcO=7
} ?2Kt'1s#
=tU{7i*+
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C++ S"wg2X<
#include <iostream> .Q)|vq^
K\)Td+~jc
int main() kg`.[{k
{ >Yt/]ta4+
std::cout << "Hello, world!" << std::endl; s[gKc '
return 0; XW?b\!@ $
} ]x&u`$F
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s
:`8ZBz~
C++/CLI Cg616hyut
int main() 3v")J*t
{ R1Ye<R!Q
System::Console::WriteLine("Hello, world!"); ;}z\i
} iV fgDo
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Jdy=_88MD
C# (C Sharp) %okzOKKX
class HelloWorldApp ,/O[=9l36R
{ v2,%K`pAU
public static void Main() j|tC@0A
{ `nO71mo
System.Console.WriteLine("Hello, world!"); z_
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} .ZMW>U>
} fw; rbP!
=H<0o?8?c
JCY~W=;v
COBOL
8L*GE
IDENTIFICATION DIVISION. ?`[NFqv_]
PROGRAM-ID. HELLO-WORLD. ~}ET?Q7t
LJ VG~Yeo
ENVIRONMENT DIVISION. 1&:@
% },Pe
DATA DIVISION. f+.T^es
d^(1TNS
PROCEDURE DIVISION. CB~Q%QLG
DISPLAY "Hello, world!". M. td^l0
STOP RUN. S^Au#1e
Tg3!R q55
}qjCTEs}
Common Lisp v_<2H'*Q
(format t "Hello world!~%") iE.-FZc
)wVIb)`R>Y
:SV>+EDY
DOS批处理 $0^P0RAH
@echo off {7MjP+\
echo "Hello, world!" ^2]LV6I
^h&I H|
C>Is1i^9
Eiffel ~ 7)A"t
class HELLO_WORLD HMY@F_qY`u
Dr;iQkGP
creation MlW 8t[
make u
=gt<1U
feature 1b9hE9a{j
make is 6bBdIqGb}
local 'lZ.j&
io:BASIC_IO V\K<$?oUb
do +%\oO/4Fs
!!io 8j1ekv
io.put_string("%N Hello, world!") x7T+>
end -- make 8e0."o.6
end -- class HELLO_WORLD s/Xb^XjS1
htP|3 B
1nPZ<^A&@
Erlang w{ `|N$
-module(hello). ^nVl (^{
-export([hello_world/0]).
_GqS&JHSf
7~M<cD
hello_world() -> io:fwrite("Hello, World!\n"). eo^/c+FG
$j)hNWI
oPKXZU(c
Forth -RJE6~>'\
." Hello, world!" CR 0@Kkl$O>mb
8dK0o>|}
0uCT+-
Fortran vw<K}z
WRITE(*,10) _~aG|mAj
10 FORMAT('Hello, World!') S'B6jJK2x
STOP bzi|s5!'<
END pUl8{YGS
BpLEPuu30
nU`Lhh8y
HTML }%n5nLU`
<HTML> Lv1{k\aw
<HEAD> d77r9
<TITLE> Hello World! </TITLE> -v?hqWMp#
</HEAD> #fhEc;t
<BODY> ^%y`u1ab
<p>Hello World!</p> N]5m(@h
</BODY> mCKk*5ws5"
</HTML> b]gY~cbI8
8Z85D
f+vVR1
HQ9+ 3]JZu9#
H (P6vOo
6g>)6ux>aV
vuz4qCQ
INTERCAL /vE]2Io
PLEASE DO ,1 <- #13 !.fw,!}hOD
DO ,1 SUB #1 <- #238 `"k9wC1
DO ,1 SUB #2 <- #112 6@4n'w{"
DO ,1 SUB #3 <- #112 K
X]oE+:
DO ,1 SUB #4 <- #0 i[semo\E
DO ,1 SUB #5 <- #64 (foBp
DO ,1 SUB #6 <- #238 u@%|kc`
DO ,1 SUB #7 <- #26 e,A)U5X
DO ,1 SUB #8 <- #248 U l Mi.;/^
DO ,1 SUB #9 <- #168 /48 =UK
DO ,1 SUB #10 <- #24 b4,jN~ci
DO ,1 SUB #11 <- #16 bdh(WJh%
DO ,1 SUB #12 <- #158 \|Dei);k
DO ,1 SUB #13 <- #52 GO5 ~!g
PLEASE READ OUT ,1 %c^ m\E
PLEASE GIVE UP yZ}d+7T}
fMK#x\.4
H l j6$%.
Java FquFRx
public class Hello Tvf~P w
{ POU}/e!Ua
public static void main(String[] args) e&X>F"z2
{ N
b3$4(F
System.out.println("Hello, world!"); e9u@`ZC07
} dYOF2si~%
} gp|1?L54
i+M*J#'
-.vDF?@G
JSP :,*eX' fH
<% 1(`M~vFDK
out.print("Hello, world!"); hhRaJ
%> &:?e &
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60;
6*1$8G`$8,
MIXAL _py2kjA6
TERM EQU 19 the MIX console device number 0kCQ0xB[a5
ORIG 1000 start address #GqTqHNE<
START OUT MSG(TERM) output data at address MSG XKLF8~y8A
HLT halt execution DOm-)zl{|x
MSG ALF "MIXAL"
T<jfAE
ALF " HELL" wFlV=!>,
ALF "O WOR" iH)Nk^
ALF "LD " P6?0r_Y
END START end of the program /3^P_\,>f
xNdID j@
K^i"9D)A
Nuva T'rjh"C&|
<..直接输出..> Ex($
Hello, world! 6GOcI#C9C
+?N}Y {Y&
<..或者..> Ht=$] Px
Qd8b-hg
<. 1
ycc5=.
// 不带换行 Z}cIA87U
? "Hello, world!" "xwM+ AC
lg/sMF>z\f
// 或者 `B#Z;R
-2NwF4VL
// 带换行 j|'R$|
?? 'Hello, world!' !
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.> #w~0uCzQ@
A_r<QYq0|
StM/
OCaml jL4>A$
let main () = PvOC5b
print_endline "Hello world!";; ]O@"\_}
Xm[Czd]%
$U'3MEEw
Pascal `facFt[\
program Hello; {fG|_+tl3o
begin .Dv=pB,u
writeln('Hello, world!'); 3&J&^O
end. ?6:cNdN
Fd!iQ
:Ee ?K
Perl ],?pe
#!/usr/local/bin/perl .98.G4J>
print "Hello, world!\n"; ul}'{|4
q,,j',8kq/
(UW6F4:$
PHP dF2@q@\.+
<?php t.z$j
print("Hello, world!"); T7GQ^WnA
?> :,C%01bH|l
utd:&q|}
+L6" vkz
Pike rdI]\UH
#!/usr/local/bin/pike -lp"#^ ;
int main() :J%'=_I&H
{ %1jdiHTaL
write("Hello, world!\n"); #uWE2*')
return 0; u`p_.n:5)
} 1jOKcm'#
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F^sw0 .b
PL/I h3t$>vs2F"
Test: procedure options(main); ;tN4HiN
declare My_String char(20) varying initialize('Hello, world!'); [`bZ5*&
put skip list(My_String); *SGlqR['\e
end Test; D{svR-~T
eYDgEM
0 0,9azs
Prolog 5&|5 a} 8
goal NTVHnSoHh
write("hello,world!"). lu3.KOD/
V* Qe5j9
$F1_^A[
Python 3B"7VBK{
#!/usr/local/bin/python ruHrv"29
print "Hello, world!" .WO/=#O
qhwoV4@f
V#H8d_V
REXX f#mx:Q.7I
say "Hello, world!" a8NVLD>7}
^teaJ y%
gD5P!}s[u0
Ruby {|p"; uJ
#!/usr/bin/ruby B$DZ]/<
print "Hello, world!\n"
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Y
$/.<z(F
ULTNhq
R*n
Scheme #'g^Za
(display "Hello, world!") e7's)C>/'
(newline) eRVY.E<
|=,83,a
y;,y"W
sed (需要至少一行输入) OgTSx
sed -ne '1s/.*/Hello, world!/p' z1}1*F"
B{=009.
<hMtE/05B
Smalltalk Z{#"-UG
Transcript show: 'Hello, world!' sr4jQo
qhN[Dj(d
q'2`0MRa
SNOBOL @5GBuu^j
OUTPUT = "Hello, world!" 2b!j.T#u
END Dx0O'uwR
- &NQ\W
86#-q7aX
SQL 'FqEB]gu
create table MESSAGE (TEXT char(15)); km}MqBQl
insert into MESSAGE (TEXT) values ('Hello, world!'); fK);!Hh
select TEXT from MESSAGE; w=5
drop table MESSAGE; 4y1>
zw<
4G[u
-3\7vpcdN
Tcl ?Oqzd$-
#!/usr/local/bin/tcl |""=)-5N
puts "Hello, world!" ?'Oj=k"c7
3)xb nRk
8T<@ @6`T
TScript >6k}HrS1V
? "Hello, world!" "'~|}x1Uv
=9fEv,Jk
lD-V9
Turing 2aFT<T0
put "Hello, world!" [jy0@Q9
PaxK^*
AzxL%,_
UNIX-style shell UDVf@[[hN
程序中的/bin/sh可改为您使用的shell )7k&`?Mh
76$*1jB
#!/bin/sh OWZS3Y+
echo 'Hello, world!' q;ZLaX\bFl
}$<^wt
k06xz#pL
GUI Ma>:_0I5
6<<'bi
Delphi 5cgo)/3M@}
program HelloWorld; )tScc*=8
uses ' *}^@[&
Dialogs; &adY
begin )`mbf|,&t{
ShowMessage('Hello, World!'); {:,_A
end. & &