“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。 ypifXO;m7
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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》。 dJ;;l7":~
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以下是用不同语言写成的Hello World程序的几个例子: k/mY. 2yPv
Ada V('b|gsEo
with Ada.Text_Io; use Ada.Text_Io; 0ib 6}L%
procedure Hello is Pb`sn5;
begin #,9|Hr%
Put_Line ("Hello, world!"); bQ4 }no0
end Hello; =1JRu[&]8
o._^
So 5{E4[
汇编语言 c~C W-%wN
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x86 CPU,DOS,TASM a3)#tt=rA
MODEL SMALL j>:T)zhyY
IDEAL @]7\.>)
STACK 100H ynd}w
G'
oy'+n-
DATASEG @Uu\x~3y
HW DB 'Hello, world!$' x~z 2l#ow
-|T^
CODESEG Af%?WZlOq
MOV AX, @data FPMk&
MOV DS, AX ;K_B,@:'
MOV DX, OFFSET HW ditzl(L
MOV AH, 09H x?F{=\z/o
INT 21H p?h;Sv/
MOV AX, 4C00H INT2i8oU
INT 21H zJy{Ry[Sb
END %)e+w+
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x86 CPU,GNU/Linux,NASM g:)vthOs
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). sDC RL%0QK
;Enter this into "hello.asm" then type: ?|/}~nj7
;"nasm -f elf hello.asm" f:SF&t*
;"ld hello.o -o hello" }:irjeI,
;"./hello" |)_R
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section .data ;data section declaration &Y>u2OZ
msg db 'Hello World!',0AH +OmSR*fA0
len equ $-msg ;string length |{nI.>
vOS0E^
section .text ;code section declaration 5zGj,y>u
global _start ;entry point (start of execution) aVb]H0
_start: mov edx,len ;string length *l^'v9
mov ecx,msg ;string start d7P @_jO6
mov ebx,1 ;file handle: stdout ba ?k:b
mov eax,4 ;sys_write vB{b/xmah
int 80h ;kernel system call ?uN(" I
)-{~7@yqZ
mov ebx,0 ;return value a8 1%M
mov eax,1 ;sys_exit rifxr4c[X>
int 80h ;kernel system call 9|`@czw
#jJcgR<
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x86 CPU,Windows,MASM32 ?Sqm`)\>4
.386 ["M>
.model flat,stdcall F~AS(sk
option casemap:none 7y\g~?5N
;Include 文件定义 ~}AP@t*
include windows.inc {;E/l(HNI
include user32.inc (?!0__NN;
includelib user32.lib E-D5iiF
include kernel32.inc Uk9g^\H<D
includelib kernel32.lib GP$Y4*y/
;数据段 B,>Fh X>h
.data -Tx tX8v
szCaption db 'A MessageBox!',0 Mvv=)?:
szText db 'Hello,world!',0 u^9c`
;代码段 w!RH*S
.code av?BpN"l
start: "BRE0Ir:
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ,LZ:y1z'V-
invoke ExitProcess,NULL aAM UJk
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> MDPM OA
end start aC:l;
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p#d UL9
AWK Wwha?W>
BEGIN { print "Hello, world!" }
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F21[r!3
Z L</
BASIC ([*t.
传统版BASIC(例如GWBASIC): DcA'{21
!&lPdEc@T
10 PRINT "Hello, world!" B6\VxSX4{
20 END (Y)h+}n5N
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或在提示符输入: ]LTc)[5Zj
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?"Hello, world!":END ?<'W~Rm6n
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现代版BASIC(例如Quick BASIC): 29^bMau)v
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Print "Hello, world!" GuWBl$|+b
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以下的语句在Quick BASIC中同样有效: ]F;]<_
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? "Hello,world!" , ~xU>L^
ssITe.,ny
>` QX
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BCPL g{hA,-3
GET "LIBHDR" [Z\1"m
PAV2w_X~
LET START () BE ~iZF~PQ1_
$( HDyZzjgG
WRITES ("Hello, world!*N") \STvBI?
$) Qu FCc1Q
X.l"f'`l
~q(C j"7
Befunge xm5FQ) T
"!dlrow olleH">v 0t?<6-3`/
, K=TW}ZO
^_@ i%PHYSJ.
YBIe'(p
NB5B$q_'#
Brainfuck -_DiD^UcXn
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ;}~Bv<#
+++++++++++++++.>.+++.------.--------.>+.>. YwWTv
}#*zjMOz
}#>d2 =T$
C NoZ4['NI\
#include <stdio.h> :TYzzl43
V)QR!4De
int main(void) |~LjH |*M
{ BC{J3<0bf@
printf("Hello, world!\n"); 5qQ(V)ah
return 0; \Ntdl:fSw
} }|"*"kxi!
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2
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C++ 50bP&dj&
#include <iostream> |uwteG5?$s
TL{pc=eBo
int main() .N5R?fmD
{ rbun5&RCyW
std::cout << "Hello, world!" << std::endl; gc7:Rb^E5t
return 0; Rn(F#tI
} I+?$4SC
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C++/CLI ,
gr&s+
int main() GVc[p\h(
{ /\uH[[s
System::Console::WriteLine("Hello, world!"); .Xz"NyW
} #u5;utY:F
S%s|P=u
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C# (C Sharp) ]AA*f_!
class HelloWorldApp r]EZ)qp^@
{ X:-bAu}D
public static void Main() PSqtZN
{ ~uZLe\>K
System.Console.WriteLine("Hello, world!"); VfC[U)w*vm
} .y_bV=
} \3(|c#c
UH,4b`b
+fCyR
COBOL k&_u\D"^"%
IDENTIFICATION DIVISION. hOL y*%
PROGRAM-ID. HELLO-WORLD. >`?+FDOJ,
VmH_0IM^6
ENVIRONMENT DIVISION. V<NsmC=g
b:5%}
DATA DIVISION. [xs)u3b
}Oh'YX#[
PROCEDURE DIVISION. (:bCOEZ
DISPLAY "Hello, world!". *ez~~ Y
STOP RUN. '"fU2M<.
nP{sCH 1
Z=Y_;dS9
Common Lisp q,,>:]f#
(format t "Hello world!~%") $s(4?^GP
qTa]th;
b}*@=X=4o
DOS批处理 ))69a
@echo off ])ALAAIc-
echo "Hello, world!" GE8D3V;*V
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a(43]d&
Eiffel i_'R"ob{S
class HELLO_WORLD "tz0ko,(
k1Mxsd
creation Gg pQ]rw
make #b"5L2D`y'
feature qqt.nrQ^
make is NZ+?Ydr8k
local 'oHOFH9:{b
io:BASIC_IO voej ~z+
do
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!!io L[D/#0qp
io.put_string("%N Hello, world!") Rr;LV<q+
end -- make
vD)A)
end -- class HELLO_WORLD T.w}6?2
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B[/['sD
Erlang vLK\X$4
-module(hello). ;]oXEq`
-export([hello_world/0]). EO9kE.g
HSr"M.k5
hello_world() -> io:fwrite("Hello, World!\n"). kSDa\l!W]
Xm^h5jAr
_Dcc<-.
Forth sg6w7fp>
." Hello, world!" CR oA3W
{
k"^t?\Q%vI
%L \{kUam
Fortran lgjoF_D
WRITE(*,10) o S:vTr+$
10 FORMAT('Hello, World!') hA1gkEM2o
STOP {7![3`%7
END {?>bblw/d
qJFgbq4-
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HTML cxP9n8CuT
<HTML> mb~=Xyk&
<HEAD> z^a!C#IX
<TITLE> Hello World! </TITLE> ahi57r[
</HEAD> C@UJOB
<BODY> S `m-5
<p>Hello World!</p> JX\T
{\m#
</BODY> 10l1a4
</HTML> QC\g%MVG
rPo\Dz
TA@tRGP>
HQ9+ ) (?UA$"
H }KaCf,O
+zVcOS*-
2NArE@
INTERCAL :9x084ESR)
PLEASE DO ,1 <- #13 `3sy>GU?
DO ,1 SUB #1 <- #238 [nN\{"~O
DO ,1 SUB #2 <- #112 %+7T9>+
DO ,1 SUB #3 <- #112 Vr/` \441
DO ,1 SUB #4 <- #0 ZXsY-5$#d-
DO ,1 SUB #5 <- #64 1hMX(N&|
DO ,1 SUB #6 <- #238 =~W0 ~lxX
DO ,1 SUB #7 <- #26 `r'0"V
DO ,1 SUB #8 <- #248 RP|>&I
DO ,1 SUB #9 <- #168 /:Z~"Q*r
DO ,1 SUB #10 <- #24 1 ~B<
DO ,1 SUB #11 <- #16 =UB*xm%!
DO ,1 SUB #12 <- #158 FUzMc1zy|
DO ,1 SUB #13 <- #52 6Bq~\b^
PLEASE READ OUT ,1 l#5~t|\
PLEASE GIVE UP _/N'I7g
0x>/ 6 <<
L&DF,fWsF&
Java G1?0Q_RN
public class Hello I4o=6ts
{ 35%[DUkb
public static void main(String[] args) N)vk0IM!
{ }o!#_N0T
System.out.println("Hello, world!"); Xew1LPI
} StdS$XW
} O7'<I|aD
p29yaM
,{uW8L
JSP 6HEqm>Yau
<% Ha=_u+@
out.print("Hello, world!"); 'd2qa`H'}B
%> }:RT,<
%EJ\|@N:
l?o-!M{
MIXAL {w |dM#
TERM EQU 19 the MIX console device number &sZ9$s:(^
ORIG 1000 start address zldfRo\wl
START OUT MSG(TERM) output data at address MSG )y%jLiQv
HLT halt execution ]< s\V-y
MSG ALF "MIXAL" R%Ui6dCLo
ALF " HELL" `FzYvd"N
ALF "O WOR" \ifK~?
ALF "LD " n2xLgK=
END START end of the program s.R-<Y3
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Nuva `x{.z=xC
<..直接输出..> Sc4obcw%
Hello, world! sFQ4O- SM
M1/M}~
<..或者..> +{")E)
<fC@KY>#
<. S'
(cqO}=F
// 不带换行 @)W(q5)}9"
? "Hello, world!" .pS&0gBo\
PcHSm/d0e
// 或者 ~7lTqY\
yqC Q24
// 带换行 YGq=8p7.R
?? 'Hello, world!' ;~Q
.> h&=O-5
GSMk\9SI
P+)qE6\
OCaml &=F-moDD
let main () = DU5:+"
u3
print_endline "Hello world!";; :]CzN^k(1c
[%j?.N
?a'6EAErC
Pascal oUJj5iu}
program Hello; }}^,7npU
begin +Dx1/I
writeln('Hello, world!'); j[J5y#
end. YG0Px Zmi
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0>,.c2),
Perl ]{f^;y8
#!/usr/local/bin/perl ==QWwPpA
print "Hello, world!\n"; hpbwZ
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PHP v ! 7s
M
<?php _GVE^yW~z
print("Hello, world!"); ?M *7@t@
?> gM4P j[W
yfmp$GO:
o&(wg(Rv
Pike 8YuJ8KC
#!/usr/local/bin/pike -PNi^
K_
int main()
f~w>v
{ wP[xmO-%
write("Hello, world!\n"); NH7`5mF$
return 0; A/q2g7My
} ifXW
!M
KcC!N{
PL/I %'Zc2h&z
Test: procedure options(main); ,N53Iic
declare My_String char(20) varying initialize('Hello, world!'); &4,WG
put skip list(My_String); |u@+`4o
end Test; :.*HQt9N
\7pipde
~9Zh,p;
Prolog 9ky7r;?
goal ;{|X,;s
write("hello,world!"). >^a$
o^3FL||P#r
>(X#<`
Python H2_/,n
#!/usr/local/bin/python 0,HqE='w
print "Hello, world!" %BUEX
_ Yfmxn8V
QE|`&~sme
REXX S_J,[#&
say "Hello, world!" aF!E x
b"I~_CL|
LO)GTyzvJ
Ruby {Fbg]'FQ
#!/usr/bin/ruby ]eE 1n2
print "Hello, world!\n" ]kx-,M(
P0^c?s"I
5sCFzo<=vh
Scheme ;HDZ+B
(display "Hello, world!") S}[l*7
(newline) X0`j-*,FX
m6^ 5S
lsk_P&M
sed (需要至少一行输入) 8p&kL