“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。 FV,SA3
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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》。 [^P2Kn
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以下是用不同语言写成的Hello World程序的几个例子: !7|9r$
Ada BE;iC.rW
with Ada.Text_Io; use Ada.Text_Io; ou4?`JF)-
procedure Hello is dRC+|^rSC
begin dg<fUQ
Put_Line ("Hello, world!"); $*> _0{<
end Hello; KL{uhb0f
&WS%sE{p_
lsf?R'1
汇编语言 eu/Sp3@v
-I<`!kH*
x86 CPU,DOS,TASM o?\Pw9Y
MODEL SMALL AX?6Q4Gq1
IDEAL oDK\v8w-
STACK 100H s_Gp +-
6YbSzx`?k
DATASEG cV,URUD
HW DB 'Hello, world!$' `_kRvpi
qN(;l&Q
CODESEG pm|]GkM
MOV AX, @data g_=ZcGC
MOV DS, AX <Z_`^~!
MOV DX, OFFSET HW 8=VX` X
MOV AH, 09H '!GI:U+g
INT 21H $x0F(|wxt
MOV AX, 4C00H W;yZ$k#q}(
INT 21H "=O)2}
END }R(_^@]
P40eK0e6
<ZEll[0L
x86 CPU,GNU/Linux,NASM CdjGYS
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax).
w?"l4.E%
;Enter this into "hello.asm" then type: OW^7aw(N6
;"nasm -f elf hello.asm" &-tf/qJ
;"ld hello.o -o hello" s4*,ocyBP
;"./hello" ^\;5O(9
<taW6=;c
section .data ;data section declaration tc Z~T
msg db 'Hello World!',0AH ggWfk
len equ $-msg ;string length NmXTk+,L#
oyY,uB.|
section .text ;code section declaration s:{%1 /
global _start ;entry point (start of execution) *a4eL [
_start: mov edx,len ;string length U^I'X7`r
mov ecx,msg ;string start C7:Ry)8'I
mov ebx,1 ;file handle: stdout 0>Nq$/!
mov eax,4 ;sys_write Vy VC#AK,
int 80h ;kernel system call /PlsF
xR3A4m
mov ebx,0 ;return value nXjUTSGa)
mov eax,1 ;sys_exit `MS=/x E
int 80h ;kernel system call ;o=mL_[
Qw+">
I_Qnq4Sk(
x86 CPU,Windows,MASM32 4)z](e$
.386 Q2uE_w`B
.model flat,stdcall ?*0kQo'
option casemap:none 7y3; F7V
;Include 文件定义 *!kg@ _0K
include windows.inc =T`-h"E~@
include user32.inc *bK@ A2`
includelib user32.lib kzT'
include kernel32.inc *G4;
includelib kernel32.lib X"sN~Q.0
;数据段 TM;)[R@
.data V8/o@I{U[
szCaption db 'A MessageBox!',0 nEYJ?_55
szText db 'Hello,world!',0 H?m2|.
;代码段 y{<7OTA)
.code W*2SlS7
start: ' wEP:}
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ]n_A~Yr
invoke ExitProcess,NULL wl4yNC
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> S/|8'x{<
end start ]Yy
Sf
D3OV.G]`
@\a- =
AWK idq= US
BEGIN { print "Hello, world!" } 'n=D$j]X
}Z|a?J@CZm
slbV[xR
BASIC bPEAG=l "-
传统版BASIC(例如GWBASIC): Fei$94a
,>Q,0bVhH0
10 PRINT "Hello, world!" $A,=z
20 END U+z&jdnhDR
Wil+"[Ge
或在提示符输入: //(c 1/s
.6*A~%-=[d
?"Hello, world!":END BeRn9[
h?b{{
现代版BASIC(例如Quick BASIC): 9b0Z
Ey{
NZ#z{JI=+
Print "Hello, world!" AMr 9rB d
Fpb1.Iz
以下的语句在Quick BASIC中同样有效: Gu-Sv!4p
*,(`%b[
? "Hello,world!" DbDpdC;
/i<g>*82
5BZ5Gl3
BCPL d@<XR~);
GET "LIBHDR" Ok@5`?08
R*U>T$
LET START () BE
Z-:`{dns/
$( F{[Q
WRITES ("Hello, world!*N") @AwH?7(b
$) 9M6&+1XE
8447hb?W$
@RC_Ie=#)
Befunge q/Q*1
"!dlrow olleH">v e:#\Oh
, 'oTF$3n
^_@ ? DPL7
O;w';}At
^l9S5
{
Brainfuck <MYD`,$yu
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< h(9K7
+++++++++++++++.>.+++.------.--------.>+.>. hE;
pJmn;XbME
!@Ox%vK
C T|u)5ww%
#include <stdio.h> tNjrd}8s
~Oq(JM
$M
int main(void) p(Sfw>t(
{ (b(iL\B$D=
printf("Hello, world!\n"); 4x:fOhtP
return 0; *+ 7#z;
} <X: 9y
7L!k9"X`0F
h:|aQJG5
C++ )Z62xK2
#include <iostream> 76
y}1aa
UZyo:*yB
int main() *aSFJK
{ {AZW."?
std::cout << "Hello, world!" << std::endl; az w8BK
return 0; Zffzyh
} Z'\_YbB
/as1
P^
a$?
C++/CLI 4`i_ 4&TS
int main() Q$3%aR-2
{ 8NLk`/
System::Console::WriteLine("Hello, world!"); Eq|_>f@@8
} BUtXHD
{9z EnVfg
/t816,i
C# (C Sharp) t({:TQ
class HelloWorldApp nF)|oA
{ GR"Jk[W9
public static void Main() !nTq"d%(W
{ ~($h9*\
System.Console.WriteLine("Hello, world!"); 6`4=!ZfI
} j}y"
} V< J~:b1V
8^O|Aa$IF:
u|+O%s TQ
COBOL uoF9&j5E@Z
IDENTIFICATION DIVISION. . uhP(
PROGRAM-ID. HELLO-WORLD. /Qbt
n84*[d}t
ENVIRONMENT DIVISION. #SO9e.yhI
<h(tW
DATA DIVISION. (|S e+Y#e,
y$!~</=b
PROCEDURE DIVISION. z7NaW e
DISPLAY "Hello, world!". f7mI\$CN
STOP RUN. ^)X^Pcx
[~x
Ql
Oq[tgmf
Common Lisp O<fbO7.-
(format t "Hello world!~%") ZMbv1*Vt
9= :!XkT.
v-OaH81&R
DOS批处理 P>:"\I[
@echo off `/"TYR%
echo "Hello, world!" Jcm"i~
S/8xo@vct]
d<xBI,g
Eiffel @dGj4h.
class HELLO_WORLD GQq2;%RrF
lE /"
creation J PmW0wM
make r6"t`M
feature [gU z9iU
make is EyozhIV
local x#U?~6.6
io:BASIC_IO WG9x_X&XJ
do zDC-PHFHQ
!!io 41$7P[M;
io.put_string("%N Hello, world!") [9X1;bO#f
end -- make mim]nRd2v
end -- class HELLO_WORLD iB{O"l@w
i,,U D
/,wG$b+
Erlang >wZ!1Jq
-module(hello). CJ?Lv2Td
-export([hello_world/0]). ._#|h5
p^NYJV
hello_world() -> io:fwrite("Hello, World!\n"). *ZAue.
#VtlXr>G
?NJ\l5'
Forth bq]af.o*
." Hello, world!" CR
R:-^,/1
^,@Rd\q
AS~O*(po
Fortran H+ t^eg88
WRITE(*,10) 4?;1cXXA
10 FORMAT('Hello, World!') BoXQBcG]w
STOP I@e{>}
END 5yuR[VU
nx84l 7<
[26"?};"%
HTML S'lZ'H /
<HTML> YEQ}<\B\&
<HEAD> [
q22?kT
<TITLE> Hello World! </TITLE> PO1sVP.S
</HEAD> 8nW#Q<s
<BODY> }3ty2D#/:
<p>Hello World!</p> MX]<tR `
</BODY> uee2WGD
</HTML> "2$C_aE
&K/5AH"q
zN0^FXGD
HQ9+ Y}Y2Vx
H zq8LQ4@ay
[*Wq6n
C([TolZ
INTERCAL >^{}Hjt
PLEASE DO ,1 <- #13 |s+y]3-_
DO ,1 SUB #1 <- #238 C&D!TR!K
DO ,1 SUB #2 <- #112 X*/jna"*
DO ,1 SUB #3 <- #112 ZU5hHah.t
DO ,1 SUB #4 <- #0 gM '_1zs
U
DO ,1 SUB #5 <- #64 [YLaRr
DO ,1 SUB #6 <- #238 +<(N]w*
DO ,1 SUB #7 <- #26 D`V03}\-
DO ,1 SUB #8 <- #248 k& 2U&
DO ,1 SUB #9 <- #168 -$>R;L
DO ,1 SUB #10 <- #24 +m^ gj:yL
DO ,1 SUB #11 <- #16 QQj)"XJ29
DO ,1 SUB #12 <- #158 Y7{IF X
DO ,1 SUB #13 <- #52 K]1A,Q
PLEASE READ OUT ,1 mY+Jju1
PLEASE GIVE UP P?\ IlziCB
q{nNWvL
%@Bl,!BJ,
Java #"|</*%>
public class Hello <}&n}|!
{ IXDj;~GF
public static void main(String[] args) P{h;2b{
{ Mpzt9*7R
System.out.println("Hello, world!"); qk<(iVUO
} kFg@|#0v9
} gG!L#J?
kl,I.2-
`qbf_;\
JSP olB?"M=H
<% 5hF
iK
K7
out.print("Hello, world!"); Tu"bbc
%> bH% k)
p8aGM-+40W
?%Hj,b
MIXAL qcSlqWDk
TERM EQU 19 the MIX console device number R?Vs8?
ORIG 1000 start address ph
qx<N@
START OUT MSG(TERM) output data at address MSG wuRQ
H]N
HLT halt execution P-o/ax
MSG ALF "MIXAL" U-&dn%Sq
ALF " HELL" |3<tDq@+
ALF "O WOR" ]%>7OH'
ALF "LD " |qnAqzK|
END START end of the program aAhXHsZ|26
;x^WPYEj
.jA'BF.
Nuva P:,'
<..直接输出..> >\6Tm
Hello, world! XHKiz2Pc1
j")#"& m
<..或者..> I|8'#QX
^yL6A1
<. 2.)xWCG
// 不带换行 c5C 2xE}T
? "Hello, world!" 3M\~#>
@TBcVHy
// 或者 a~ sU
iI\bD
// 带换行 7)SG#|v[$
?? 'Hello, world!' ]/g&y5RG
.> W}{RJWr
#}Y$+FtO
HqC
1Dkw
OCaml BPs|qb-
let main () = jGy%O3/
print_endline "Hello world!";; N1/)Fk-z
ldk (zAB.
R!{^qHb
Pascal jeLRS8];
program Hello; B?n
6o|8
begin {| ~
writeln('Hello, world!'); v%a)nv
end. utOATjB.z
pn"TFapJA
Sp/t[\,'
Perl %EV\nwn6
#!/usr/local/bin/perl Jy<hTd*q
print "Hello, world!\n"; oHh~!#u
11Sflj
nYy%=B|>
PHP f4[fXP;A
<?php M:TN^ rA|
print("Hello, world!"); 0>{&8:
?> KTLq~Ru
m-T@Og
>2vUFq`H
Pike '^mCLfo0}
#!/usr/local/bin/pike 9|BH/&$
int main() ]rC2jB\,M
{ <KY \sb9
write("Hello, world!\n"); 'C[{cr.`
return 0; eV(nexE
} J34/rL/s
3QSA|
}OZut!_
PL/I l/*NscYtQ
Test: procedure options(main); l$_q#Kd
declare My_String char(20) varying initialize('Hello, world!'); OeMI
put skip list(My_String); vX?MB
end Test; c?(;6$ A
#dO8) t
vtx3a^
Prolog M9~eDw'Pr
goal +;#z"m]
write("hello,world!"). B|I9Ex~L
=bKz$
_W
XS#Jy
n
Python pzr\<U`
#!/usr/local/bin/python '0b!lVe
print "Hello, world!" )}!Z^ND*
v;6O# ta'
?58,Ja
REXX |; [XZ ZZ
say "Hello, world!" p9X{E%A<:
r<MW8
[d dKC)tA
Ruby uy'I#^Bt
#!/usr/bin/ruby O~P1d&:L
print "Hello, world!\n" xxy
(#j$
};{Qx
CU`yi.)T{
Scheme RKi11z
(display "Hello, world!") DjLSl,Z
(newline) sOVbz2\yb
;15j\{r
]#NJ[IZb
sed (需要至少一行输入) %>io$ o
sed -ne '1s/.*/Hello, world!/p' ] S0tK
ioW&0?,Ym
&0`[R*S
Smalltalk 7=hISQMsVP
Transcript show: 'Hello, world!' PP*',D3
0%(.$c>:f
Qr.SPNUFK
SNOBOL Uf,fd
OUTPUT = "Hello, world!" l@W1bS
END (J6>]MZ#)
7jS`4,
y1qJ
SQL faIHmU
create table MESSAGE (TEXT char(15)); / biB*Z
insert into MESSAGE (TEXT) values ('Hello, world!'); /LK,:6
select TEXT from MESSAGE; F`Ld
WA
drop table MESSAGE; D$?}M>
[ !<
0Z4o3r[
Tcl w;p~|!
#!/usr/local/bin/tcl uN;]Fv@Z
puts "Hello, world!" Ss~yy0
k>.n[`>$6|
$n#NUPzG+
TScript ^]zC~LfG
? "Hello, world!" ']&rPvkL
Cs2F/M'
dbsD\\,2%N
Turing <|=^[' vi
put "Hello, world!" Y=5}u&\
WU+OS(
|& Pa`=sp
UNIX-style shell
}K.2
程序中的/bin/sh可改为您使用的shell 59MpHkr
#?_8 *?
#!/bin/sh u*6Y>_iA
echo 'Hello, world!' umuE5MKY<
$! R]!s
%AJTU3=0
GUI \- f^C}m
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