“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。 svCD&~|K#
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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》。 %'a%ynFs
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以下是用不同语言写成的Hello World程序的几个例子: -=iGl5P?
Ada "~(qp_AI
with Ada.Text_Io; use Ada.Text_Io; z8_m<uewz
procedure Hello is ns[v.YDL
begin B8UtD
Put_Line ("Hello, world!"); veAg?N<c
p
end Hello; C8rD54A'M
I|9(*tq)
HS XS%v/Y
汇编语言 f]`#BE)V
n0F.Um
x86 CPU,DOS,TASM FRd!UqMXY
MODEL SMALL (+68s9XS7
IDEAL C93BK)$}
STACK 100H Xf!@uS6<X
NUbw]Y90~
DATASEG u~[HC)4(0
HW DB 'Hello, world!$' fuSfBtLPR#
^e:C{]S=
CODESEG +%Q:
MOV AX, @data ,A`d!{]5
MOV DS, AX 0{^vqh.La
MOV DX, OFFSET HW 1rKKp h
MOV AH, 09H u\wdb^8ds
INT 21H T]Z|Wq`bot
MOV AX, 4C00H s:3 altv
INT 21H #"-?+F=rk
END 5Ds/^fA
0D/u`-
(|)`~z
x86 CPU,GNU/Linux,NASM c[\ :^w^I6
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 4YDK`:4I~
;Enter this into "hello.asm" then type: ~XN--4%Q
;"nasm -f elf hello.asm" =}>wxO
;"ld hello.o -o hello" x=T`i-M
;"./hello" ma9q?H#X
[ -"o5!0<
section .data ;data section declaration gNF8&T
msg db 'Hello World!',0AH F1) B-wW
len equ $-msg ;string length vQ/}E@?u
yI/2 e [
section .text ;code section declaration }P(RGKQZ"
global _start ;entry point (start of execution) :xJ]#
t..
_start: mov edx,len ;string length qX{"R.d
mov ecx,msg ;string start psyxNM=dN#
mov ebx,1 ;file handle: stdout 7ksh%eV
mov eax,4 ;sys_write IhnHNY]<g
int 80h ;kernel system call LOQoi8j
c.-h'1
mov ebx,0 ;return value A}WRpsA9
mov eax,1 ;sys_exit _a1 =?
int 80h ;kernel system call $2B_a
^ CVhV
cpvN
}G
x86 CPU,Windows,MASM32 9<u^.w
.386 @Gp=9\L
.model flat,stdcall ?PVJeFH
option casemap:none Mx<z34(T
;Include 文件定义 @)s;u}H
include windows.inc Ot}fGiio
include user32.inc )OQhtxK
includelib user32.lib rE0?R(_
include kernel32.inc h07Z.q ;
includelib kernel32.lib L1=3_fO
;数据段 wI.i\S
.data \Zc$X^}vN
szCaption db 'A MessageBox!',0 Q|QVm,m
szText db 'Hello,world!',0 ?#;
oqH<
;代码段 ^2f'I iE
.code 7jvy]5y8&~
start: 8 2qf7`
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK NbOeF7cq+
invoke ExitProcess,NULL j1_ E^
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> j,%@%upM
end start xw_VK1
h4rIt3`
vvA=:J4/i)
AWK (t&]u7Atr
BEGIN { print "Hello, world!" } j.FA!4L
4w,=6|#
_Gs*4:
BASIC @(>XSTh9
传统版BASIC(例如GWBASIC): Gt#Jr!N~
pRI<L'
10 PRINT "Hello, world!" qu]ch&"?U
20 END b`"E(S /
Ci%u =%(
或在提示符输入: o?nlnoe
M|!^ #!a(
?"Hello, world!":END kk]f*[Zi5
}OY]mAv-B
现代版BASIC(例如Quick BASIC): H.-jBFt}
~RcI+jR)
Print "Hello, world!" 5/x"!Jk
Rs+rlJq
以下的语句在Quick BASIC中同样有效: d"3S[_U
tHNvb\MR$
? "Hello,world!" jVP70c
*hVbjI$
GC?X>AC:
BCPL I9O9V[
GET "LIBHDR" V3;4,^=6Dd
dw
%aoe
LET START () BE vZV+24YWb
$( !iKR~&UpAL
WRITES ("Hello, world!*N") (vte8uQe
$) bqugo
s2Gi4fY?
Y.I-hl1<r
Befunge 1I({2@C
"!dlrow olleH">v 6o@}k9AN
, 89@\AjI
^_@ 8N<0|u
W{E22J}
,#3}TDC
Brainfuck kp3(/`xP
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< _\E{T5
+++++++++++++++.>.+++.------.--------.>+.>. Gvo(iOU
@$FE}j_
|1^>n,C
C _^4\z*x
#include <stdio.h> >Gbj1>C}
n^|;J*rD
int main(void) lB!`,>"c
{ eUQ., mP
printf("Hello, world!\n"); !:e|M|T'I*
return 0; Hw"ik6
} "|W .o=R
4R!A.N 9
WelB+P2
C++ =PHl|^
#include <iostream> X!5N2x
b i^h&H
int main() _`lj
3Lm0>
{ u2HkAPhD
std::cout << "Hello, world!" << std::endl; pAS!;t=n,
return 0; rQiX7
} EubR]ckB
SNP.n))
d_9Fc"C~
C++/CLI Hj
]$
int main() gyH'92ck
{ /x.TF'Z*
System::Console::WriteLine("Hello, world!"); Q,Tet&in )
} ]2G5ng' @
<%eY>E
`B+%W
C# (C Sharp) yu"Ii-9z
class HelloWorldApp 2}j2Bhc
{ ={' "ATX(U
public static void Main() ~XGO^P"?
{ a2W}Wb+
System.Console.WriteLine("Hello, world!"); h"VQFqQy
} fs4pAB #F
} QFoZv+|
0?uX}8w
A(duUl~
COBOL `}o4 &$
IDENTIFICATION DIVISION. eydVWVN
PROGRAM-ID. HELLO-WORLD. ln.kEhQ3B
Vzy]N6QT{
ENVIRONMENT DIVISION.
?7-#iC`
pM~Xh ]/
DATA DIVISION. A2'
t
K;E&:
PROCEDURE DIVISION. 7SzY0})<U
DISPLAY "Hello, world!". K#M
h
STOP RUN. g!n1]- 1
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e'
PJj{5,#@3
Common Lisp =/=x"q+X
(format t "Hello world!~%") Ab7hW(/
/uI/8>p(
oR}ir
DOS批处理 y8: 0VZox
@echo off Okk[}G)
echo "Hello, world!" |)6(_7e9
Pg[zRRf<
Qi Wv
Eiffel ':#?YQ}2
class HELLO_WORLD %sC,;^wla'
bGRI^
[8#+
creation TRz~rW
k
make UCYhaD@sP
feature z.16%@R
make is
H%7V)"
local )hk=wu6
io:BASIC_IO b{)('C$
do TI}H(XL(
!!io .Pq8C
io.put_string("%N Hello, world!") 4zghM<
end -- make jIE>t5 fy
end -- class HELLO_WORLD kFv\V
7UHqiA`L
?97MW a
Erlang DGY#pnCu
-module(hello). q?z6|]M|u
-export([hello_world/0]). $n `Zvl2
Qpd-uC_Ni
hello_world() -> io:fwrite("Hello, World!\n"). yp5*8g5
3M{!yPlj
rP ;~<IxEr
Forth (Wr;:3i
." Hello, world!" CR Y^LFJB|b4
8DTk<5mW~
1W~-C B>
Fortran `.aL>hf
WRITE(*,10) F$r8hj`
10 FORMAT('Hello, World!') 567ot|cc
STOP 5!#"8|oY
END el!Bi>b9c!
w|WZEu:0|
^a; V-US
HTML 4W9!_:j(j
<HTML> *p?b "{_a
<HEAD> q`1t*<sk
<TITLE> Hello World! </TITLE> 7qE V5!
</HEAD> qNHS 1
<BODY> \$;\,p p
<p>Hello World!</p> ~p;<H
</BODY> {EJVZG:&
</HTML> *B}vYX
:'y
|UnTd$m
HQ9+ ?f']*pD8
H \!ESmxSa;
y NV$IN%
?Z4&j'z<
INTERCAL };9dd3X
PLEASE DO ,1 <- #13 %W"\
DO ,1 SUB #1 <- #238 PkDL\Nqe
DO ,1 SUB #2 <- #112 x|0Q\<mEe
DO ,1 SUB #3 <- #112 Y@eHp-[
DO ,1 SUB #4 <- #0 H[@}ri<
DO ,1 SUB #5 <- #64 R'dF<&Kj|
DO ,1 SUB #6 <- #238 3JW9G04.
DO ,1 SUB #7 <- #26 fH`1dU
DO ,1 SUB #8 <- #248 C*Ws6s>+z
DO ,1 SUB #9 <- #168 BT>*xZLpS
DO ,1 SUB #10 <- #24 Aog3d\1$
DO ,1 SUB #11 <- #16 0nx
<f>n
DO ,1 SUB #12 <- #158 C,2IET
DO ,1 SUB #13 <- #52 5[l3]HOO
PLEASE READ OUT ,1 >[|:cz
PLEASE GIVE UP #*S/Sh?Q
1bzPBi
;ok];4`a
Java 5B'-&.Aj+
public class Hello %c^]Rdl
{ h>mQ; L
public static void main(String[] args) A!^K:S:@
{ /bCrpcH
System.out.println("Hello, world!"); fS#/-wugOB
} b@YSrjJ
} @1n0<V/
jv2l_
@2$PU{dH
JSP [-6j4D
<% qgZ(o@\
out.print("Hello, world!"); !YJdi~q
%> AX'(xb,
}i[i{lKj
t ?bq~!X
MIXAL \!cqeg*53
TERM EQU 19 the MIX console device number 8.-PQ
ORIG 1000 start address *<9 D]
START OUT MSG(TERM) output data at address MSG I$f:K]|.m!
HLT halt execution PtgUo,P
MSG ALF "MIXAL" SF_kap%JM
ALF " HELL" ; UrwK
ALF "O WOR" DVSYH{U4
ALF "LD " SNK+U"Q
END START end of the program AZl=w`;/O%
Q|5wz]!5Y(
(|U+ (~PJ
Nuva t9m`K9.\
<..直接输出..> &OI=rvDmo
Hello, world! FNc[2sI
ZLL0 6p
<..或者..> /c'#+!19
0w+hf3K+:
<. c"O\fX
// 不带换行 L7D'wf
? "Hello, world!" vpXS!o>/Sn
6bb=;
// 或者 VKN^gz
K03a@:
// 带换行 <