“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。 Hh$x8ADf
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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》。 Yvs9)g
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以下是用不同语言写成的Hello World程序的几个例子: _;G"{e.=
Ada b_W0tiyv%
with Ada.Text_Io; use Ada.Text_Io; vp[~%~1(
procedure Hello is UqsVqi
h(
begin UpN:F
Put_Line ("Hello, world!"); (`<l" @:_*
end Hello; N$6Rg1
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汇编语言 t(\d;ybyx
x5c
pv
x86 CPU,DOS,TASM s@jzu
MODEL SMALL Fwm{oypg%
IDEAL [8^jwnAYS
STACK 100H Y9'Bdm/
H9xxId?3u
DATASEG *h-_
HW DB 'Hello, world!$' L/"u,~[
8N'`kd~6[
CODESEG DSM,dO'
MOV AX, @data kK16+`\+
MOV DS, AX n-#?6`>a
MOV DX, OFFSET HW gk>A
MOV AH, 09H ALiA+k N
INT 21H J&@[=zBYw
MOV AX, 4C00H S5-}u)XnH
INT 21H "6gu6f
END )z=`,\&p:
S=0zP36kH:
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x86 CPU,GNU/Linux,NASM 0"ZB|^c=
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). kgEGL]G>
;Enter this into "hello.asm" then type: sc@v\J;k
;"nasm -f elf hello.asm" s~6?p%
2]
;"ld hello.o -o hello" Hd
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;"./hello" <ij;^ygYD
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section .data ;data section declaration sG%Q?&-
msg db 'Hello World!',0AH QukLsl]U
len equ $-msg ;string length P2_ JS]>
lo,?mj%M
section .text ;code section declaration Q6`oo/
global _start ;entry point (start of execution) DQ?'f@I&*
_start: mov edx,len ;string length %+:%%r=Q
mov ecx,msg ;string start |0vY'A)]
mov ebx,1 ;file handle: stdout x&8HBF'
mov eax,4 ;sys_write S=U*is
int 80h ;kernel system call jI_TN5
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mov ebx,0 ;return value zRx-xWo
mov eax,1 ;sys_exit [@eNb^R
int 80h ;kernel system call ((SN We
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-|~6Zf"
x86 CPU,Windows,MASM32 _SJ#k|vcq
.386 u `1cXL['
.model flat,stdcall y"<nx3
option casemap:none CSN]k)\N(
;Include 文件定义 /(bPc12
include windows.inc pUZbZ
U
include user32.inc GO.mT/rB
includelib user32.lib ]uI#4t~
include kernel32.inc W~$YKBW
includelib kernel32.lib V)mRG`L
;数据段 9*h?g+\
.data ;$ D*,W
*
szCaption db 'A MessageBox!',0 O3bo3Cm$
szText db 'Hello,world!',0 yEJ}!/
;代码段 @SF*Kvb&
.code ^%@(>:)0
start: ZxlQyr`~a(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK c`yLn%Of%
invoke ExitProcess,NULL }oIA*:5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ZZL.&Ho
end start QmvhmsDL
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AWK %G1kkcdH<
BEGIN { print "Hello, world!" } B<SuNbR
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BASIC g)u
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传统版BASIC(例如GWBASIC): +/'3=!oyd
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10 PRINT "Hello, world!" oyZ}JTl(Q
20 END C:\BvPoO
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或在提示符输入: byR|L:L
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?"Hello, world!":END tY-{uHW&h
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现代版BASIC(例如Quick BASIC): Cb~_{$ A
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Print "Hello, world!" -&I)3
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以下的语句在Quick BASIC中同样有效: ]mYT!(}
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? "Hello,world!" ZW{pO:-
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_5 Zhv-7
BCPL Z&e_yl
GET "LIBHDR" n dgG1v%
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LET START () BE |_@ '_
$( #]>Z4=]v
WRITES ("Hello, world!*N") Squ'd
$) ZT:&j4A|0
)EZ#BF<0|
h W\q
Befunge JE9SPFQx9M
"!dlrow olleH">v {hr>m,O%
, Hy`Ee7>
^_@ u;R<
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Brainfuck tu8n1W
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< {gT2G*Ed^Z
+++++++++++++++.>.+++.------.--------.>+.>. ^iAOz-H
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C ,)^4H>~V
#include <stdio.h> OBp<A+a
BO)K=gl;8
int main(void) :Lu=t3#
{ W9nmTz\8
printf("Hello, world!\n"); 2x%Xx3!
return 0; *Y8nea^$
} T|RW-i3
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C++ !8S$tk
#include <iostream> zXWf($^&E
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int main() OP>rEUtj
{ 4d~Sn81xW
std::cout << "Hello, world!" << std::endl; </~!5x62Oy
return 0; &qKJN#NM@
} Wm_:1~
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A|C
w ryjs!
C++/CLI M|IR7OtLV
int main() VX#4Gh,~N
{ faH113nc
System::Console::WriteLine("Hello, world!"); fR[kjwX)<1
} #Duz|F+%
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#;,dk(URo
C# (C Sharp) :=9?XzCC
class HelloWorldApp ^UTQcm
{ 7` AQn],
public static void Main() P?D;BAP2
{ Hq=5/N
System.Console.WriteLine("Hello, world!"); y!JZWq%=
} ^PHWUb+``
} >~C*m `#
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COBOL }&|S8:
IDENTIFICATION DIVISION. QfqosoP\D
PROGRAM-ID. HELLO-WORLD. -;rr! cQ?
hS(}<B{x!
ENVIRONMENT DIVISION. ;.*n77Y
cZ>h [XX[
DATA DIVISION. 8:s"
^YLN
mc37Y.
PROCEDURE DIVISION. b3Nr>(Z<}
DISPLAY "Hello, world!". 5k /Y7+*?E
STOP RUN. qRy<W
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gG5@ KD6k
Common Lisp ~:8}Bz2!5
(format t "Hello world!~%") s az<NT
<i}lP/U
Z:51Q
DOS批处理 o1I8l7
@echo off W !.F\H,(
echo "Hello, world!" v8=7
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II(7U3
Eiffel Buazm3q8H
class HELLO_WORLD #Fp5>%*
ME'hN->c
creation #|\w\MJamP
make YXeL7W
feature `+Ko{rf+9
make is jN.'%5Q?H
local cPQUR^!5
io:BASIC_IO !yxb=>A
do >SS
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!!io NFDh!HUm
io.put_string("%N Hello, world!") 1$1s0yg
end -- make $A>\I3B
end -- class HELLO_WORLD 7Q_AZR4
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Erlang !aylrJJ
-module(hello). ?;{d
-export([hello_world/0]). >\J({/ #O
O+ ].'
hello_world() -> io:fwrite("Hello, World!\n"). Pr|:nJs
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k{M4.a[(
Forth G.#`DaP
." Hello, world!" CR x+1Cs$E;
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}r%Si
Fortran vR;?~^{*s
WRITE(*,10) xV]eEOiLM
10 FORMAT('Hello, World!') 55aJ=T
STOP ZjCT * qx
END iA=QK
u!
I.V?O}
k5 s8s@
HTML a!OS2Tz:
<HTML> TgFj-"L\
<HEAD> j%7N\Vb
<TITLE> Hello World! </TITLE> tXlo27J
</HEAD> 6xDYEvHS
<BODY> hT
c
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<p>Hello World!</p> gmF Cjs
</BODY> ;;A8*\*$
</HTML> ):LgZ4h
P~"e=NL5
4<P=wK=a8X
HQ9+ u1@&o9
H HLD8W8
6R.%I{x'
l+%2kR
INTERCAL :[hZn/
PLEASE DO ,1 <- #13 e7T}*Up
DO ,1 SUB #1 <- #238 cM'\u~m{
DO ,1 SUB #2 <- #112 {xW HKsI>,
DO ,1 SUB #3 <- #112 `,-w+3?Al
DO ,1 SUB #4 <- #0 BYhF?
DO ,1 SUB #5 <- #64 osBwX.G'l
DO ,1 SUB #6 <- #238 7FQ&LF46
DO ,1 SUB #7 <- #26 T4
:UJj}
DO ,1 SUB #8 <- #248 x%J4A+kU
DO ,1 SUB #9 <- #168 tBJCfM
DO ,1 SUB #10 <- #24 H8$l }pOz
DO ,1 SUB #11 <- #16 U-b(
DO ,1 SUB #12 <- #158 PTt#Ixn,
DO ,1 SUB #13 <- #52 uItzFX*
PLEASE READ OUT ,1 .mr&zq
PLEASE GIVE UP
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-'q#u C
Java 8ClOd<I
public class Hello 3I}(as{Rp
{ O~wZU Zf
public static void main(String[] args) MKl`9 Y3Ge
{ CtEpS<*c
System.out.println("Hello, world!"); TnuNoMD.
} #o>~@.S#:0
} c8@zpkMj/
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m
lKtA.{(
JSP 1KHFzx,
<% 8ztVv
out.print("Hello, world!"); fN!ci']
%> :NHP,"
s *8)|N
x6h';W_ 8
MIXAL @pV~Q2%
TERM EQU 19 the MIX console device number Fl{@B*3@w
ORIG 1000 start address jV}tjwq
START OUT MSG(TERM) output data at address MSG @Rc/^B:
HLT halt execution LBcnBo</v
MSG ALF "MIXAL" j3W)
ALF " HELL" Ht{Q=w/9
ALF "O WOR" <6!;mb
;cX
ALF "LD " 6k4ZzQ}
END START end of the program hggP9I:s,
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Rhfx
Nuva 6h?v/\
<..直接输出..> 5{PT
Hello, world! /i[1$/*
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<..或者..> NZ|(#` X
bXiOf#:''
<. 6I<^wS9j_
// 不带换行 3|se]~
? "Hello, world!" {E 'go]
hOOkf mOM
// 或者 \me'B {aa
y;GwMi$KI
// 带换行 O
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?? 'Hello, world!' )R+26wZ|n*
.> tCF,KP?
aSGZF w
N I*x):bx
OCaml yPn!1=-(
let main () = B$\,l.hE
print_endline "Hello world!";; ;Xr|['\'
u&E$(
:j<ij]rsI
Pascal T4c]VWtD
program Hello; +46m~" ]
begin u/ Gk>F
writeln('Hello, world!'); / b;GC-"v
end. j#f7-nHyz8
U!TSAg21P
crDm2oA~t
Perl R(1N]>
#!/usr/local/bin/perl rL KwuZ
print "Hello, world!\n"; ~43T$^<w;
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:TZ</3Sw
PHP dlf nhf
<?php 17C"@1n-
print("Hello, world!"); ;_nV*G.y#^
?> o8ERU($/
L>ruNw'-K
_u]S/X-
Pike <@](uWu
#!/usr/local/bin/pike n>o0PtGxC
int main() 5bZjW~d
{ e,X{.NS
write("Hello, world!\n"); 4b@Awtk
return 0; O: J;zv\
} Cqra\
Rf4}4ixkj
j@guB:0
PL/I h!!7LPxt
Test: procedure options(main); Kqn{q4L
declare My_String char(20) varying initialize('Hello, world!'); -qDM(zR
put skip list(My_String); RAs5<US:
end Test; c_N'S_)~7Q
{[[j .)
!uxma~ZH-
Prolog u,88V@^
goal z]V%&f
write("hello,world!"). r;"uk+{i
*?`<Ea
uO{'eT~
Python c`M
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#!/usr/local/bin/python GEGg
S&SM
print "Hello, world!" Ir4M5OR\
P.>5`^
M>xjs?{%k
REXX B s {n
say "Hello, world!" Be4n\c.
713)D4y}
ixjhZk i<
Ruby 8jdEx&K
#!/usr/bin/ruby +wpQ$)\
print "Hello, world!\n" 8j^3_lD
:dML+R#Ymh
LEgx"H=c
Scheme TPi=!*$&
(display "Hello, world!") -udKGrT+
(newline) rv26vnJy"
nB.u5
[CAV"u)0
sed (需要至少一行输入) sI% =G3o=
sed -ne '1s/.*/Hello, world!/p' rl0|)j
NNTUl$
5n#@,V.O/
Smalltalk \1H~u,a
Transcript show: 'Hello, world!' IS[&V&.n
B.ar!*X
"l7))>lL
SNOBOL n u!tk$Q
OUTPUT = "Hello, world!" G@+AB*Eu
END :h!&.FB
;R4qE$u2^
bi<?m^j
SQL eI:;l];G9
create table MESSAGE (TEXT char(15)); :WM[[LOaC
insert into MESSAGE (TEXT) values ('Hello, world!'); --'!5)U
select TEXT from MESSAGE; bKb}VP
drop table MESSAGE; ><