“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。 R4S))EHg
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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》。 M[L@ej
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以下是用不同语言写成的Hello World程序的几个例子: 9} ]C
Ada o}yA{<"
with Ada.Text_Io; use Ada.Text_Io; U :8cz=#
procedure Hello is <SRo2rjRa
begin [!4V_yOb
Put_Line ("Hello, world!"); @Suww@<
end Hello; x6Q_+!mnk
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r(g2&}o\
汇编语言 #/)U0IR)
^%qQ)>I=j
x86 CPU,DOS,TASM 3Q_)Xs
r`
MODEL SMALL \mw5
~Rf;
IDEAL 1(jx.W3
STACK 100H +d3h @gp
pMkM@OH
DATASEG
TrBtTqH)
HW DB 'Hello, world!$' ;kD
Rm'(
W&2r{kCsQ
CODESEG f_IsY+@
MOV AX, @data yg"FF:^T
MOV DS, AX }L>0}H
MOV DX, OFFSET HW `r0MQkk
MOV AH, 09H vh^?M#\
INT 21H kM3#[#6$!
MOV AX, 4C00H P}
Y .
INT 21H /=KEM gI?
END cY.5z:7u~v
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mh#_lbe'
x86 CPU,GNU/Linux,NASM |43Oc:Ah+
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). vP,$S^7$
;Enter this into "hello.asm" then type: JC7:0A^
;"nasm -f elf hello.asm" aQ0pYk~(
;"ld hello.o -o hello" 1c4:'0
;"./hello" ne=CN!=
j_SUR)5
section .data ;data section declaration v R!
y#
msg db 'Hello World!',0AH a!,X@5
len equ $-msg ;string length ^NO4T
|^OK@KdL1
section .text ;code section declaration Gl9,!"A
global _start ;entry point (start of execution) 4 Z&KR<2Z
_start: mov edx,len ;string length >&Y\g?Z6G
mov ecx,msg ;string start p-,Bq!aG$
mov ebx,1 ;file handle: stdout -K6y#O@@
mov eax,4 ;sys_write ym2"D?P
(
int 80h ;kernel system call ;G*)7fi
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mov ebx,0 ;return value igF<].'V
mov eax,1 ;sys_exit '>t'U?7w<
int 80h ;kernel system call Tj!rAMQk
p,7?rI\N
[iC]Wh%
x86 CPU,Windows,MASM32 [x
-<O:r=P
.386 |?ZNGPt
.model flat,stdcall TpxAp',#7
option casemap:none }+K=>.
;Include 文件定义 ,vuC0{C^
include windows.inc *C.Kdf3w
include user32.inc U"a7myB+jX
includelib user32.lib D{JwZL@7k2
include kernel32.inc n'!x"O7
includelib kernel32.lib Qki?
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;数据段 =tl~@~pqI
.data N\Ab0mDOV.
szCaption db 'A MessageBox!',0 T[2<_ nn=
szText db 'Hello,world!',0 9rT"_d#
;代码段 j? Vs"d|
.code M%7|7V<o)^
start:
=)J<R;
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK q XB E3
invoke ExitProcess,NULL {"db1Gbfg
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ^grDP*;W
end start dcfwUjp[
rVp^s/A^;
bl\;*.s'
AWK oslj<
BEGIN { print "Hello, world!" } 1D%E})B6
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BASIC ruy?#rk
传统版BASIC(例如GWBASIC): olK*uD'`
"+hUt
10 PRINT "Hello, world!" gl!ht@;>ak
20 END vgi`.hk
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或在提示符输入: >2NsBS(
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?"Hello, world!":END ?<^^.Si
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现代版BASIC(例如Quick BASIC): m/`L3@7Tt
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Print "Hello, world!" &"Fz)}
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以下的语句在Quick BASIC中同样有效: ^Zlbs
goZ
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? "Hello,world!" {vur9L
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pE$*[IvQ'
BCPL wkT4R\H >
GET "LIBHDR" V=c?V/pl
u3sr"w&
LET START () BE A@reIt
$( <)o xs]<
WRITES ("Hello, world!*N") &09G9G snQ
$) }{v0}-~@
:^]FpUY
E cd~H+
Befunge A$?o3--#]G
"!dlrow olleH">v z'0
=3
, -#g0
^_@ {(h!JeQ
9xL`i-7]
w7~&Xxa/
Brainfuck LtNspFoLb
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< " pL5j
+++++++++++++++.>.+++.------.--------.>+.>. !0cb f&^:
dCzS f4:
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C Y^,G}
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#include <stdio.h> e'dZ2;X$zo
BEii:05
int main(void) +Z/aG k;
{ *l'5z)]
printf("Hello, world!\n"); lLuAg ds`
return 0; y-vBC3
} T28Q(\C:}
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C++ vv`,H~M6
#include <iostream> q6V\n:hKV
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int main() Y_M3-H=0
{ liVj-*m
std::cout << "Hello, world!" << std::endl; {i:Ayhq~&
return 0; SWMi+)
} _<;westq
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~@EBW3>~5
C++/CLI ?L6ACi`9
int main() I i J%.U
{ 8J+:5b_?
System::Console::WriteLine("Hello, world!"); 4(}V$#^+
} !$.h[z^
T~-PT39E
#6qLu
C# (C Sharp) atjrn:X
class HelloWorldApp G:?l;+P1
{ 4Awl
public static void Main() Ke,$3Yx
{ 9N{"ob
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System.Console.WriteLine("Hello, world!"); NW@guhK.
} Rac4a@hZ
} 8i?h{G IMV
zu|=1C#5h
nV+]jQ~o
COBOL Zk75GC
IDENTIFICATION DIVISION. P
:D6w){
PROGRAM-ID. HELLO-WORLD. A;#GU`
5K %
ENVIRONMENT DIVISION. 1r;.r|
jCv%[H7
DATA DIVISION. 6?(vXPpT$
MnymV;y"
PROCEDURE DIVISION. K=X13As_
DISPLAY "Hello, world!". 4GTB82V$
STOP RUN. E0Jk=cq
S)[$F}
\Z%V)ZRi=
Common Lisp ImVHX~qHJ
(format t "Hello world!~%") SRf.8j
8q#Be1u<s2
b(.,Ex]
DOS批处理 +XN/ bT
@echo off .~Z@y#
echo "Hello, world!" V57tn6>b
2
.)`8|c9
wth*H$iF
Eiffel W6[# q%o
class HELLO_WORLD dF/HKBJ
lwuslt*E/
creation JHZ`LWq
make 3m9ab"
feature my^2}>wi
make is G*lkVQ6?
local M8wEy_XB1
io:BASIC_IO 96$qH{]Ap
do 79JU
!!io /}=Bi-
io.put_string("%N Hello, world!") nY[]k p@
end -- make XY1eeB-
end -- class HELLO_WORLD D-IXO@x
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Erlang +P?^Yx0d
-module(hello). >^fkHbgNQ
-export([hello_world/0]). {v>orP?
$rG~0
hello_world() -> io:fwrite("Hello, World!\n"). DNN60NX 5Q
Q7-d]xJ^
:UgCP ~Y
Forth C_JDQByfL
." Hello, world!" CR bez_|fY{T
^5yFb=2
f\~OG#AaX
Fortran aA5rvP+
WRITE(*,10)
Mmu>&C\
10 FORMAT('Hello, World!') #nS
STOP LYv$U;*+
END a8Q=_4
l
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ED+tVXyw
HTML 5#SD$^
<HTML> GukS=rC9
<HEAD> z`:uvEX0
<TITLE> Hello World! </TITLE> oL2 a:\7
</HEAD> H[a1n' "<:
<BODY> 0DFxVH_xN
<p>Hello World!</p> N d"4*l;
</BODY> 8
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</HTML> .Y"H{|]Mnh
/5y*ZIq]e
A$9^JF0$
HQ9+ ^mu?V-4
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n' \poB?
INTERCAL +H7lkbW
PLEASE DO ,1 <- #13 -|l^- Qf!
DO ,1 SUB #1 <- #238 MU ;
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DO ,1 SUB #2 <- #112 qDQ$Zq[
DO ,1 SUB #3 <- #112 7n1@m_7O
DO ,1 SUB #4 <- #0 ~9OART='
DO ,1 SUB #5 <- #64 @} 61D
DO ,1 SUB #6 <- #238 =3Y:DPMB
DO ,1 SUB #7 <- #26 L%[om c?
DO ,1 SUB #8 <- #248 .5',w"R
DO ,1 SUB #9 <- #168 pD+_ K
DO ,1 SUB #10 <- #24 $LLy#h?V]
DO ,1 SUB #11 <- #16 Wq+6`o
DO ,1 SUB #12 <- #158 eJ+uP,$
DO ,1 SUB #13 <- #52 d8|bO#a%9
PLEASE READ OUT ,1 d{UyiZm\
PLEASE GIVE UP |g3a1El
Q.q'pJ-
BnLM ;5
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Java oCBZ9PGkK
public class Hello OIuEC7XM^C
{ h|_E>6d)
public static void main(String[] args) 4v"9I(
{ M>pcG.6V
System.out.println("Hello, world!"); ohHKZZ
} /e^q>>z
} ?F@0"qi
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7j&iHL
JSP " .9b}}
<% Jon<?DQj
out.print("Hello, world!"); Fxu'(xa
%> 6gLk?^.
v'"0Ya
q;dg,Om
MIXAL mCa[?
TERM EQU 19 the MIX console device number cr{;gP
ORIG 1000 start address 6R%Ra
START OUT MSG(TERM) output data at address MSG v-;j44sB
HLT halt execution #S57SD
MSG ALF "MIXAL" >a@c5
ALF " HELL" x
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ALF "O WOR" W0]W[b,:u$
ALF "LD " ; ]*
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END START end of the program NuLyu=.?
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Nuva !TJCQ[Aa}
<..直接输出..> 1LbJR'}
Hello, world! gpB pG
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<..或者..> 1}A1P&2>
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<. _5F8F4QY`
// 不带换行 /8\gT(@
? "Hello, world!" xn49[T
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// 或者 g$c\(isY;
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// 带换行 86c@Kk7z
?? 'Hello, world!' o ]UG*2
.> #&JhA2]q
l6^IX0&p
czM Thm
OCaml 1+1Z]!nG#!
let main () = oMH-mG7:K
print_endline "Hello world!";;
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Pascal 'l+).},
program Hello; T%
begin h
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writeln('Hello, world!'); Z5 lE*z
end. N"X;aVFs_
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Perl h,-8(
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#!/usr/local/bin/perl 0/7y&-/(
print "Hello, world!\n"; 8`e75%f:2
yi7m!+D3
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PHP e;1n!_l\
<?php .VFa,&5;3
print("Hello, world!"); 7Sc._G{[%
?> RP}.Ei
.G"UM>.}d
Gw3H1:yo
Pike ,2H@xji
[
#!/usr/local/bin/pike O>YXvu
int main() rQ0V3x1"Qx
{ b2x8t7%O
write("Hello, world!\n"); 1
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return 0; 9$-V/7@)
} m'|{AjH
z6
?nW K s
=yn|.%b
PL/I FX+;azE7
Test: procedure options(main); O gQE1{C
declare My_String char(20) varying initialize('Hello, world!'); r^<W$-#
put skip list(My_String); y:TLGQ0
end Test; {-28%
J(CqT/Au-
=c{/ Z
Prolog wYTF:Ou^5~
goal F<'@T,LVc
write("hello,world!"). B+yr
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Python }"?v=9.G
#!/usr/local/bin/python q$[x*!~
print "Hello, world!" -rYOx9P4
OidF{I*O
s`2Hf&%aZJ
REXX xngK_n
say "Hello, world!" ({/@=e x*
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vi+k#KE
Ruby +" 4E:9P?
#!/usr/bin/ruby
Vj^<V|=
print "Hello, world!\n" \IZfp=On
3c<).aC0f
XP
Nk#"
Scheme p9*#{~
(display "Hello, world!") R8
1z|+c|_
(newline) !o.l:Mr
Xj :?V;
]V!q"|
sed (需要至少一行输入) gie}k)&M
sed -ne '1s/.*/Hello, world!/p' !"\UT&