“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。 NKd}g
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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》。 zgXg-cr
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以下是用不同语言写成的Hello World程序的几个例子: ?55t0
Ada GKTt!MK
with Ada.Text_Io; use Ada.Text_Io; 7v3'JG1r-
procedure Hello is 1t
wC-rC
begin @k['c
Put_Line ("Hello, world!"); SEa'>UG
end Hello; `>-fU<Q1
]-h;gN
/N.xh
汇编语言 v1h\
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mQdF+b1o
x86 CPU,DOS,TASM \9j +ejGf
MODEL SMALL IcRA[
g
IDEAL d$qivct
STACK 100H f]%:.N~1w
5]pvHc
DATASEG Z0HfrK#oU
HW DB 'Hello, world!$' =?]H`T:
4&%0%
CODESEG ,Ta k',
MOV AX, @data B;x5os
MOV DS, AX pURtk-Fr2
MOV DX, OFFSET HW WxLbf+0o
MOV AH, 09H Od_xH
INT 21H ""$vaqt
MOV AX, 4C00H g>`
k9`
INT 21H 1T&NU
END )`
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U;
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x86 CPU,GNU/Linux,NASM gQ90>P:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). >NLG"[\
;Enter this into "hello.asm" then type: rlxZ,]ul
;"nasm -f elf hello.asm" w5fVug/;P
;"ld hello.o -o hello" hOFC8 g
;"./hello" O0^m_
)Y4;@pEU
section .data ;data section declaration 9o%k [n
msg db 'Hello World!',0AH e1cqzhI=nA
len equ $-msg ;string length FZL"[3
Gak@Z!|
section .text ;code section declaration kU:ge
global _start ;entry point (start of execution) tofX.oi+C$
_start: mov edx,len ;string length 8XfhXm>~
mov ecx,msg ;string start 3(&k4
mov ebx,1 ;file handle: stdout dfy]w4ETB
mov eax,4 ;sys_write 0O>T{<
int 80h ;kernel system call Qe,jK{Y<
-
o3 b=)E
mov ebx,0 ;return value 1 S<E=7
mov eax,1 ;sys_exit 5@QJ+@j|
int 80h ;kernel system call F*u"LTH
p^.qwP\P
z)tULnR8
x86 CPU,Windows,MASM32 df\ ^uyD;
.386 ^^
>j2=
.model flat,stdcall gXJtk;
option casemap:none 2i9FzpC3
;Include 文件定义 Ei>.eXUD5
include windows.inc _uXb 9
include user32.inc \/XU v(
includelib user32.lib %f)%FN.S
include kernel32.inc ?)NgODU
includelib kernel32.lib [0bp1S~
;数据段 ._%8H
.data h`i*~${yg
szCaption db 'A MessageBox!',0 *.us IH2
szText db 'Hello,world!',0 ;t~Y>,
;代码段 "2 \},o9
.code w{8O$4
w
start: g)dKXsy(F
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK g"{`g6(+
invoke ExitProcess,NULL Kz~E"?
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> C6"{-{H
end start d9iVuw0u<
[n]C
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AWK g3|k-
BEGIN { print "Hello, world!" } P*|qbY
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xiv8q/
BASIC Vp$<@Y
传统版BASIC(例如GWBASIC): /np05XhEa
.(^%M
2:6
10 PRINT "Hello, world!" vRkVPkZ6|
20 END V~#8lu7;
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或在提示符输入: ]qb>O:T
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?"Hello, world!":END ECsb?n7e
B#]:1:Qn
现代版BASIC(例如Quick BASIC): we0haK
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Print "Hello, world!" y_``-F&Z
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以下的语句在Quick BASIC中同样有效: I*z|_}$
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? "Hello,world!" i);BTwW)#]
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BCPL :jAsm[
GET "LIBHDR" :FUxe kz
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LET START () BE .PD_Vv>C/>
$( qXprD.; }
WRITES ("Hello, world!*N") qP[_!C.
$) I)\{?LdHR
nP&6i5s%
xsIfR3Ze9
Befunge J``5;%TJp
"!dlrow olleH">v ug_c}Nv=Y
, =}"P;4:
^_@ nt%fJ k
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a|5<L
Brainfuck O]XgA0]
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< T|&u?
+++++++++++++++.>.+++.------.--------.>+.>. PYwGGB-
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lDL(,ZZS`
C ~\*wt( o
#include <stdio.h> '%&-`/x
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int main(void) >]HvXEdNZ|
{ qgs:9V
xF
printf("Hello, world!\n"); |hS^eK_
return 0; _1jbNQa
} \'r;1W
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C++ B qo#cnlG
#include <iostream> G%junS'zt
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int main() ujn7DBE"
{ 6P
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std::cout << "Hello, world!" << std::endl; a$EudD#+
return 0; r]'[qaP
} ]5Q)mWF
CD.
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wHZ(=z/q
C++/CLI kT % m`
int main() fo=@ X>S
{ pxI[/vS
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System::Console::WriteLine("Hello, world!"); BM9:|}\J65
} .]0:`Y,;
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dP<i/@21Wm
C# (C Sharp) tiy#b8
class HelloWorldApp r3Kx
{ /g1;`F(MS/
public static void Main() ~<}?pDA}~
{ o{' JO3
System.Console.WriteLine("Hello, world!"); /eBcPu"[Vb
} ? <w[ZWytm
} 9 ge'Mo
lmIphOUoIw
u`XZtF<vf
COBOL gk}.LE
IDENTIFICATION DIVISION. LWxP}? =
PROGRAM-ID. HELLO-WORLD. S#0C^
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ENVIRONMENT DIVISION. pf#R]
Abpzf\F
DATA DIVISION. kaRjv
*c(J4
PROCEDURE DIVISION. s]HJcgI
DISPLAY "Hello, world!". Gx|/
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STOP RUN. #4AqWyp#f
ivSpi?
.G}$jO}
Common Lisp vos-[$
(format t "Hello world!~%") ZSB;4 ?:h
fc<,kRp
#bb$Icmtk
DOS批处理 rW)}$|-Z
@echo off PKev)M;C+
echo "Hello, world!" k#2b3}(,
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eH 9-GGr
Eiffel QZ5%nJme_
class HELLO_WORLD FC4hvO(/m
qvs[Gkaa@
creation >`n)-8
make :UfaMe5
feature V.!z9AQ
make is ^fU,9
local }]pO R&o
io:BASIC_IO 0a+U >S#
do C?rb}(m
!!io ']sIU;h3
io.put_string("%N Hello, world!") aSeh?2n8
end -- make HmV JkkksJ
end -- class HELLO_WORLD #b1/2=PA
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lC^?Jk[N
Erlang `J}FSUn\
-module(hello). `
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-export([hello_world/0]). gT|&tTS1@
^izf&W.j!
hello_world() -> io:fwrite("Hello, World!\n"). ?`B6I!S0[
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S3dcE"hg
Forth Egl1$,e
." Hello, world!" CR i;#AW($+a
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CasFj9,
Fortran ,*wj~NE
WRITE(*,10) jG^OF5.
10 FORMAT('Hello, World!') ra]\!;}L0
STOP UQ2;Dg G%
END mW."lzIl
\U?{m)N
A:?w1"7gT
HTML (Jy >,~O
<HTML> *%dWNvN4X
<HEAD> }& 01=nY
<TITLE> Hello World! </TITLE> n(\VP!u5r
</HEAD> )<L?3Jjt5
<BODY> "oCXG`.k&
<p>Hello World!</p> B)ibxM(n*
</BODY> %U$%x
</HTML> (PnrY~9
IUy5=Sl
5{#ya2
HQ9+ ~
[=2d a
H U&6f:IV
%[m%QP1;p
":Pfi!9Wl
INTERCAL ld'Aaxl&
PLEASE DO ,1 <- #13 c6HH%|
DO ,1 SUB #1 <- #238 jhE3@c@pT
DO ,1 SUB #2 <- #112 v?4MndR
DO ,1 SUB #3 <- #112 j`"cU$NRM
DO ,1 SUB #4 <- #0 _MGhG{p7t
DO ,1 SUB #5 <- #64 Il#9t?/
DO ,1 SUB #6 <- #238 |R>I#NO5
DO ,1 SUB #7 <- #26 h!1CsLd[
DO ,1 SUB #8 <- #248 wEIAU
DO ,1 SUB #9 <- #168 :sekMNM
DO ,1 SUB #10 <- #24 o
n?8l?iQ
DO ,1 SUB #11 <- #16 j=w`%nh4"f
DO ,1 SUB #12 <- #158 j*1O(p+
DO ,1 SUB #13 <- #52 ?;Ge/~QU5
PLEASE READ OUT ,1 b %I2ig
PLEASE GIVE UP $g)X,iQu
M{~KT3c
a.g:yWL\
Java -\fn \n
public class Hello }MV=t7x9+
{ T8J[B( )L
public static void main(String[] args) V:
ivnx*
{ ,xIWyI.
System.out.println("Hello, world!"); 3.I:`>;EO
} s&WHKCb
} 9@z"~H
TWJ%? /d
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JSP v]BMET[w
<% 4O3-PU>N
out.print("Hello, world!"); g R)
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%> 6\?<:Qto
$Z^HI
. vQCX1V(
MIXAL T>s3s5Y
TERM EQU 19 the MIX console device number JIU=^6^2'
ORIG 1000 start address R>.
%0%iq
START OUT MSG(TERM) output data at address MSG `}fwR
HLT halt execution qQUCK
MSG ALF "MIXAL" 38eeRo
ALF " HELL" +t PqU6
ALF "O WOR" [0mg\n?
ALF "LD " Mi_/
^
END START end of the program
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Nuva xA2"i2k9
<..直接输出..> ,_2ZKO/k$
Hello, world! :*/`"M)'
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<..或者..> S-k:+ 4
2Fsv_t&*>
<. 4q\bnt
// 不带换行 l>O~^41[
? "Hello, world!" r+%}XS%;h
X,8]g.<
// 或者 :;]iUjiC8
cfd7)(6
// 带换行 T#e ;$\
?? 'Hello, world!' 7B,axkr
.> &udlt//^%
*
"Z5bKL
[<M~6]
OCaml Q)s[ls
let main () = ^p433
print_endline "Hello world!";; Q4,!N(>D
3ud_d>
Wc+)EX~KS
Pascal $kef_*BQg
program Hello; oMV<Yn_<
begin /G h?z
writeln('Hello, world!'); /
`Glf|
end. Th6xwMq
t\$P*_
%Z=%E!*
Perl {FU,om9
#!/usr/local/bin/perl [_h/DhC:+
print "Hello, world!\n"; i7/I8y
6eh\-+=
Bqd'2HQd
PHP :_FnQhzg
<?php %`[Oz[V
print("Hello, world!"); KK%R3{
?> ;L458fYs
Ej]:j8^W
"ebm3t@C
Pike Nf<mgOAT1
#!/usr/local/bin/pike ?(4E le
int main() /RzL,~]
{ ?2#MU
write("Hello, world!\n"); (93+b%^[
return 0;
z"n7du}v
} OIMsxXF\J
1]i{b/ 4
bZ$;`F5})
PL/I dyz)22{\!`
Test: procedure options(main); %9!,PeRe
declare My_String char(20) varying initialize('Hello, world!'); ^"e|)4_5\
put skip list(My_String); 8AK=FX&@&
end Test; 0Y81B;/F
}9GD'N?4
|ZAR!u&0
Prolog Oist>A$Z
goal S}Q/CT?au
write("hello,world!"). VM1`:1Z:$
ebSG|F
TM1isZ
Python M6 W{mek
#!/usr/local/bin/python \L"Vx9xT
print "Hello, world!" +$-@8,F>
o&GS;{Rs
G'5p /:
REXX gxIGL-1M
say "Hello, world!" d@a FW
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y\Z$8'E5W
Ruby 5*ip}wA
#!/usr/bin/ruby G>/Gw90E
print "Hello, world!\n" -.>b7ui
Nm.H
K\7\
Scheme [<+A?M=
(display "Hello, world!") 5v f?E"\r
(newline) Vy:I[@6@+
rfgkw
l$PSID
sed (需要至少一行输入) ^]&uMkPN
sed -ne '1s/.*/Hello, world!/p' )]/gu\90
kPm{ tc
ETw7/S${
Smalltalk D`?=]Ysz(
Transcript show: 'Hello, world!' mIK-a{?G
i|]Kw9
!\
IgTt,
SNOBOL QUPZe~G>L
OUTPUT = "Hello, world!" Nq`@ >Ml
END PgeC\#;9
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INi9`M.h
SQL xpJ6M<O{8
create table MESSAGE (TEXT char(15)); Ry@QJn I<
insert into MESSAGE (TEXT) values ('Hello, world!'); UE-<
select TEXT from MESSAGE; Z`UwXp_s
drop table MESSAGE; |\?mX=a.y
s#%$aQ|Fp
"$->nC.
Tcl 3D"2yTM(
#!/usr/local/bin/tcl RObo4
puts "Hello, world!" Rqi=AQ
e;+6U"Jx*
n9
LTrhLqp
TScript x)Y?kVw21"
? "Hello, world!" iP7
Cku}l
#JmVq-)
9Q~9C9{+
Turing M bj{C
put "Hello, world!" q#{.8H-X'
vD=>AAvG
mv5=>Xc6
UNIX-style shell !Ez5@
程序中的/bin/sh可改为您使用的shell !e8OC9_x
wLF;nzv
#!/bin/sh 3pxZk%
echo 'Hello, world!' q c(R
/[
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:~I^ni
GUI {X85
tx,_0[hZi
Delphi 9j0Hvo% T
program HelloWorld; !cLdoX
uses Vs[A
Dialogs; ',7LVT7
begin eGwO!Lv}B
ShowMessage('Hello, World!'); 4LEWOWF}
end. r8.`W\SKX
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#%4XZ3j#j;
Nuva "!V-@F$@N
<. R`[jkJrc
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) B]KR *
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aVg~/
Dq [f
Visual Basic wbIgZ]o!/;
MsgBox "Hello, world!" L}~"R/iWCT
'或者 iS p +~
Print "Hello, world!" .3X5~OH
CIxa" MW
[@VM'@e7
Visual FoxPro _Sq*m=
? "Hello, world!" ?/M:
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86*9GS?U(
X11 VjI=5)+~
用一个程序 4YV0v,z
>>cb0fH5
xmessage 'Hello, world!' ; _ziRy
Tv d}5~
5?
用C++和gtkmm 2 [P'"|TM[~
_#UiY
ffa*
#include <iostream> 9QQiIi$74U
#include <gtkmm/main.h> Dias!$g
#include <gtkmm/button.h> lm;Dy*|<