“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。 %&6QUv^
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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》。 |*c1S
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以下是用不同语言写成的Hello World程序的几个例子: gML8lu0)
Ada ,'0#q
with Ada.Text_Io; use Ada.Text_Io; v%:deaF
procedure Hello is E<jajYj
begin -FJ3;fP&
Put_Line ("Hello, world!"); 8m{e,o2.
end Hello; GURiW42
~]-n%J$q
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汇编语言 8JY0]G6
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x86 CPU,DOS,TASM !i torSl
MODEL SMALL q@wD@_
IDEAL #uU(G\^T
STACK 100H IB;yL/T
DKjiooD
DATASEG .Exvuo`F
HW DB 'Hello, world!$' g[(@@TiG
.aT@'a{F
CODESEG 7su2A>Ix
MOV AX, @data qTJ0}F
MOV DS, AX dcY(1p)
MOV DX, OFFSET HW D\THe-Vtr
MOV AH, 09H H0s*Lb
INT 21H %'1iT!g8
MOV AX, 4C00H cTq@"v di
INT 21H or*{P=m+R
END gHPJiiCv
Pg8.RvmQ
4;AF\De
x86 CPU,GNU/Linux,NASM 2jyWkAP'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). f0H.$UAL
;Enter this into "hello.asm" then type: VNTbjn]
;"nasm -f elf hello.asm" v7"VH90`!
;"ld hello.o -o hello" @*eY~
;"./hello" PgA<pfEHE
7*PBJt\
section .data ;data section declaration tBGLEeL/.
msg db 'Hello World!',0AH `TPIc
len equ $-msg ;string length <J<"`xKL
K80f_iT5
section .text ;code section declaration ,,uhEoH
global _start ;entry point (start of execution) *,z/q6
_start: mov edx,len ;string length s>/Xb2\
mov ecx,msg ;string start DU\ytD`u
mov ebx,1 ;file handle: stdout c0zcR)=mL
mov eax,4 ;sys_write (c[u_~ ;
int 80h ;kernel system call ym|7i9
ZR\N~.
mov ebx,0 ;return value [P+kQBLpL
mov eax,1 ;sys_exit P4#i]7%
int 80h ;kernel system call 3Rb#!tx9
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x86 CPU,Windows,MASM32 {N}az"T4f
.386 $sY'=S
.model flat,stdcall h\[@J rDa
option casemap:none `o{ Z;-OF
;Include 文件定义 uLzE'ZmV
include windows.inc JPZp*5c6A
include user32.inc iHhdoY[]
includelib user32.lib nriSVGi
include kernel32.inc OdFF)-K>~
includelib kernel32.lib nms[No?
;数据段 nod&^%O"
.data rNk'W, FU
szCaption db 'A MessageBox!',0 #r #[&b
szText db 'Hello,world!',0 +%XByY5
;代码段 1Rd|P<y
.code -rU_bnm
start: %nkP" Z#
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ;D~#|CB
invoke ExitProcess,NULL NWn*_@7;
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1Of(O!
end start :6(\:
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dE"_gwtX
AWK uaO.7QSwN
BEGIN { print "Hello, world!" } w8X5kk
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BASIC aM
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传统版BASIC(例如GWBASIC): ')v,<{
H[hJUR+#
10 PRINT "Hello, world!" gbzBweWF
20 END LY0f`RX*&
Q!q6R^5!K
或在提示符输入: oH w!~c7
y>=Y MD
?"Hello, world!":END 7nT|yL?
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现代版BASIC(例如Quick BASIC): UK,bfLPt~
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\-t
Print "Hello, world!" WkiT,(i
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以下的语句在Quick BASIC中同样有效: _fS\p|W(E
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? "Hello,world!" gfK_g)'2U
+\Vw:~e
:j`f%Vg~x
BCPL h"ZIh= j@
GET "LIBHDR" _{`Z?lt
>s5}pkAv|e
LET START () BE 32K& IfV
$( FXo.f<U
WRITES ("Hello, world!*N") h)Fc<,vwBE
$) BX$<5S@
"9P @bA
4vbGXb}!
Befunge lO cFF0'
"!dlrow olleH">v 8?82 p
, sAc1t`
^_@ R*pPUw\yn
kFE9}0-
i@+m<YS:2>
Brainfuck )tBz=hy#
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< _p8u
&TZ
+++++++++++++++.>.+++.------.--------.>+.>. +A8q.-N
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C xy:Mb =r
#include <stdio.h> FQ0&{ulb
A4,%l\di<
int main(void) BlpyE[h
T
{ bJn&Y
printf("Hello, world!\n"); /%;J1{O
return 0; BeFyx"NBg
} D4c'6WGb@
f~W+Rt7o
1av#u:jy~>
C++ JL4E`
#include <iostream> C:No ^nH>
=-Hhm($n
int main() .I~:j`K6
{ w=fWW^>bP
std::cout << "Hello, world!" << std::endl; 2z{B
return 0; YT?Lt!cl=
} \bT0\
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atpHv**D<i
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C++/CLI oF$#7#0`;8
int main() a0)w/A&
{ O\f`+Q`0
System::Console::WriteLine("Hello, world!"); k}:;`ST
} :=*G7ZyW$
}< '6FxR
3U^Vz9LW
C# (C Sharp) j~Pwt9G
class HelloWorldApp [<,7LG<
{ &iWTf K7
public static void Main() FbuWFC
{ h;vY=r-
System.Console.WriteLine("Hello, world!"); IT:WiMDQ}
} CN(-Jd.b
} _w\i ~To!
*Zg=cI@)(
B~]6[Z
COBOL $,:mq>]![{
IDENTIFICATION DIVISION. 2p9^ =
PROGRAM-ID. HELLO-WORLD. Y7+c/co
.f0qgmIyL
ENVIRONMENT DIVISION. \dU.#^ryp
9IXy96]]6
DATA DIVISION.
;@k=9o]A
1c QF(j_
PROCEDURE DIVISION. s:lH4B
DISPLAY "Hello, world!". y@v)kN)Y9\
STOP RUN. {HY3E}YJL
)SP"V~^Wn
'y!qrmMRr
Common Lisp fsPsP`|
(format t "Hello world!~%") Q\s+w){f%
@_"cMU!
ShL!7y*rT{
DOS批处理 F(.`@OO
@echo off oUsfO-dET^
echo "Hello, world!" hN K wQ
43h06X`
:Ni#XZ{F-/
Eiffel cQ<|Of
class HELLO_WORLD 9Vq
V+D5<nICr
creation >'Lkn2WI
make UH0l8ixc
feature u~*A-X[
make is f_PH?
local #Pk{emYW
io:BASIC_IO ;{0alhMZ
do 1o/(fy
!!io [xY-=-T*4
io.put_string("%N Hello, world!") ~q+AAWL
end -- make DcFY b|p
end -- class HELLO_WORLD >n/0od9
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xU%]G.k
Erlang 6<@+J
-module(hello). W=EcbH9/.)
-export([hello_world/0]). 5Q%)|(U'
U"|1@W#
hello_world() -> io:fwrite("Hello, World!\n"). uQbag]&j
;;i419
m$W2E.-$'#
Forth DM v;\E~D
." Hello, world!" CR zmZU"eWp)
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pr})^w
Z] r9lC
Fortran +JG05h%'
WRITE(*,10) WFc4(Kl
10 FORMAT('Hello, World!') >{(c\oMD
STOP k(tB+k!vH\
END o=94H7@
(rJ-S"^u
yuC$S&Y>!
HTML 6d8)]
<HTML> =e
1Q>~
<HEAD> N/WtQSl
<TITLE> Hello World! </TITLE> }@6yROy.
</HEAD> Q)4[zStR#
<BODY> GQ?FUFuIoW
<p>Hello World!</p> Ff>X='{
</BODY> >pZ_
</HTML> "LDNkw'
Mu:zWLM*M
?r(vXq\
HQ9+ 0LC]%x+"
H Zjn1,\(t~u
Cp!9 "J:
*`qI<]!
INTERCAL Ux?G:LLz
PLEASE DO ,1 <- #13 ^F?B_'
DO ,1 SUB #1 <- #238 x&u@!# d]
DO ,1 SUB #2 <- #112 7>@0nHec
DO ,1 SUB #3 <- #112 2vB,{/GXP
DO ,1 SUB #4 <- #0 GD}rsBQNkJ
DO ,1 SUB #5 <- #64 .e5@9G.jb
DO ,1 SUB #6 <- #238 ubZuvWZ
DO ,1 SUB #7 <- #26 65@GXn[W_
DO ,1 SUB #8 <- #248 'HfI~wN
DO ,1 SUB #9 <- #168 [7x;H
DO ,1 SUB #10 <- #24 xS/=9l/G
DO ,1 SUB #11 <- #16 'bZw-t!M@
DO ,1 SUB #12 <- #158 n::i$ZUdK
DO ,1 SUB #13 <- #52 (W"0c?i|]
PLEASE READ OUT ,1 `_/1zL[
PLEASE GIVE UP _"D J|j
1Zk1!> ?
1$# r)S[*
Java k}kwr[
public class Hello wp8-(E^
{ hx%UZ <a
public static void main(String[] args) 0)PZS>
{ (?uK
System.out.println("Hello, world!"); aH%tD!%,o
} Dz.kJ_"Ro
} 8KP
uCW}q.@4
0V8G9Gj
JSP Q$'\_zV
<% ?vD<_5K;I
out.print("Hello, world!"); JSh'iYJ.
%> *S<I!7Q
>~_>.R+{
{ ~{D(k
MIXAL V^D1:9i
TERM EQU 19 the MIX console device number #0*I|gfV
ORIG 1000 start address n|=yw6aV'
START OUT MSG(TERM) output data at address MSG b!SIs*
HLT halt execution V^.Z&7+E`_
MSG ALF "MIXAL" 2&s(:=
ALF " HELL" T|oDJ]\J
ALF "O WOR" |C+
5
ALF "LD " Z^mIGy}
END START end of the program )i39'0a
R. ryy
Lrx"Hn{
Nuva RM2feWm
<..直接输出..> }
-hH2
Hello, world! }EfRYE$E
ou|3%&*"
<..或者..> r!>=G%
n#GHa>p.-
<. >i1wB!gc8
// 不带换行 A}pe>ja
? "Hello, world!" q_;# EV
LWM& k#i
// 或者 86&r;c:
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// 带换行 rA_r$X
?? 'Hello, world!' _cfAJ)8=
.> V^9%+L+E5
JKXIxw>q
L(`q3>iC4.
OCaml 6NFLk+kqN
let main () = g2r8J0v
print_endline "Hello world!";; =o"sBVj
G
in
\=W t{
Pascal :e_yOT}}
program Hello; lQ.3_{"s
begin jI}{0LW&F&
writeln('Hello, world!'); N~yGtnW
end. 6Vu??qBy
@yPI$"Ma
q=BAYZ\`
Perl K,HR=5
#!/usr/local/bin/perl =PBJ+"DQs
print "Hello, world!\n"; 7.^1I7O
<l9qhqHv&
=)6|lz^
PHP =6w(9O
<?php t9
id^
print("Hello, world!"); G! ryW4
?> ybm&g( -\
s.}:!fBk
{-5b[m(
Pike Zf\It<zT5
#!/usr/local/bin/pike O
>&,h^
int main() @)@hzXQ
{ !. ={p8X-x
write("Hello, world!\n"); CH h6Mnw
return 0; vr>Rd{dm
} vi.q]$ohbV
b(g?X
(&
OEN'c0;5
PL/I j\@|oW0
Test: procedure options(main); hRN>]e,!
declare My_String char(20) varying initialize('Hello, world!'); f['pHR%l2$
put skip list(My_String); +@oo8io
end Test; Zo(QU5m0
7\;gd4Ua1
obIYC
Prolog {7q +3f <
goal pe@/tO&I
write("hello,world!"). {5:V
hW}
cm7>%g(oQo
B7qiCX}pD
Python lT]dj9l
#!/usr/local/bin/python Ed~2Qr\65
print "Hello, world!" =gr3a,2
{~d8_%:b
}NJ? .Y
REXX Vt,"5c
say "Hello, world!" I:#Es.
nR~L$Wu5_a
(hX}O>
Ruby _\xd]~ELj
#!/usr/bin/ruby xSHeP`P^X
print "Hello, world!\n" '||),>~
F{aM6I
GwVSRI:[N
Scheme AfW9;{j&I
(display "Hello, world!") ?_c*(2i&^
(newline) bQM_rqjJGw
|[lM2
3~!PJI1
sed (需要至少一行输入) R'r^v
sed -ne '1s/.*/Hello, world!/p' \=/^H
Me*]Bh
@oL<Ioh
Smalltalk vl}uHdeP9
Transcript show: 'Hello, world!' @=[SsS
)TcW.d6
~\m|pxcj
SNOBOL NLxsxomj
OUTPUT = "Hello, world!" $.@)4Nu!_
END N^.!l_
*m sW4|=^2
D ~Y3\KP
SQL xem:#>&r
create table MESSAGE (TEXT char(15)); Ge;plD-f
insert into MESSAGE (TEXT) values ('Hello, world!'); U= PG0
select TEXT from MESSAGE; >m{)shBX
drop table MESSAGE;
HRKe 7#e
~?{"H<
Z*|qbu)
Tcl ou@ P#:<B
#!/usr/local/bin/tcl z_J"Qk
puts "Hello, world!" d98ZC+q
}A"%YDrNbG
DjjG?(1
TScript s],+]<qX
? "Hello, world!" k w!1]N
0: (@Y
ukSi9| 1-,
Turing 8W"~>7/>D
put "Hello, world!" rX#}2
5sq#bvfJ o
f13%[RA9N
UNIX-style shell d(L u|/~
程序中的/bin/sh可改为您使用的shell { LJRdV
ZIx,?E+eJ
#!/bin/sh l~M86 h
echo 'Hello, world!' bgm$<