“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。 40/[uW"
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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》。 ?"Q6;np*
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以下是用不同语言写成的Hello World程序的几个例子: P~>nlm82]
Ada EJY:C9W
with Ada.Text_Io; use Ada.Text_Io; @Q5^Q'!
procedure Hello is y+h=x4t
begin |9M
y>8k(
Put_Line ("Hello, world!"); EatDT*!
end Hello; aW5~z^I
i?9Lf
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汇编语言 cH ?]uu(
)~ kb7rfl
x86 CPU,DOS,TASM qIp`'.#m
MODEL SMALL EB,>k1IJ
IDEAL !{\c`Z<#
STACK 100H [r'M_foga*
EQ-~e
DATASEG G9Ezm*I;:
HW DB 'Hello, world!$' ^ jA}*YP
#{sb>^BF
CODESEG I`1=VC]^8
MOV AX, @data O[5ti=W
MOV DS, AX @^@-A\7[KO
MOV DX, OFFSET HW p%'((!a2
MOV AH, 09H #kEdf0
INT 21H PX'%)5:q;i
MOV AX, 4C00H #UIg<:
INT 21H HN%ZN}
END k5M(Ve
nK$m:=
e{/\znBS%
x86 CPU,GNU/Linux,NASM CPG %*E*
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). _>l,%n
;Enter this into "hello.asm" then type: qB`P7!VN^]
;"nasm -f elf hello.asm" i"@?eq#h
;"ld hello.o -o hello" V;=T~K|)>
;"./hello" 5E8PbV-l
;?9~^,l
section .data ;data section declaration g!UM8I-$
msg db 'Hello World!',0AH J4; ".Y=
len equ $-msg ;string length dl4.jLY
!j@ 8:j0WY
section .text ;code section declaration q\<vCKI-^
global _start ;entry point (start of execution) oY: "nE
_start: mov edx,len ;string length ;MD{p1w
mov ecx,msg ;string start 3 -FNd~%
mov ebx,1 ;file handle: stdout `)fGw7J
{
mov eax,4 ;sys_write |v&&%>A2
int 80h ;kernel system call )Ec;kr b+
R_}(p2
mov ebx,0 ;return value W`
V
mov eax,1 ;sys_exit w,7
GC5j\
int 80h ;kernel system call 3z<t#
tuSgh!
`,O^=HBM
x86 CPU,Windows,MASM32 xM,3F jF
.386 s zg1.&
.model flat,stdcall =&'j;j
option casemap:none WUWQcJj
;Include 文件定义 FtXEudk
include windows.inc t Ks0]8tc
include user32.inc V
RL6F2 >6
includelib user32.lib O<*iDd`(e
include kernel32.inc (;h\)B!o
includelib kernel32.lib K!X8KPo
;数据段 o2L/8q.
.data QX4I+x~oo\
szCaption db 'A MessageBox!',0 !p2&$s"N.
szText db 'Hello,world!',0 LO229`ARr|
;代码段 0IK']C
.code %lxo?s@GE
start: ZO~N|s6B^
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK {*m?t 7
invoke ExitProcess,NULL K+Qg=vGY
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> %-dGK)?
end start mon(A|$|j
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(|-/S0AV
AWK q$K~BgFzpZ
BEGIN { print "Hello, world!" } xab[
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=uH`EkY:
BASIC bCsQWsj^NW
传统版BASIC(例如GWBASIC): s`{O-
|@+
x9|'W
10 PRINT "Hello, world!" :;EzvRy
20 END PHoW|K_e
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或在提示符输入: 8K qv)FjB
!O\r[c
?"Hello, world!":END @ 9uwcM1F
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现代版BASIC(例如Quick BASIC): `` ={FaV~m
laAG%lq/'
Print "Hello, world!" D 6(w}W
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以下的语句在Quick BASIC中同样有效: wo/H:3^N
1+]e?
? "Hello,world!" B:l(`G
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uZNR]+Yu@
BCPL OG.`\G|
GET "LIBHDR" s=q}XIWK
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eL7
LET START () BE 82$^pg>
$( 607#d):Y
WRITES ("Hello, world!*N") J&5|'yVX
$) "_^FRz#h
Z^sO`C
7HzKjR=B
Befunge .{6TX"M
"!dlrow olleH">v kys?%Y1
, :%Bo)0a9
^_@ xKxWtZ0
2/GH5b(
4CDmq[AVS[
Brainfuck niFjsTA.Z
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 0Y\u,\GrxW
+++++++++++++++.>.+++.------.--------.>+.>. -n6C~Yx
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C h"[
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#include <stdio.h>
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int main(void) } nQHP4'
{ %K zURv
printf("Hello, world!\n"); E*kS{2NAq
return 0; re<"%D
} 9Y7 tI3
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).-FuL4Y
C++ 0j3j/={|.1
#include <iostream> 7JujU.&{6
S"lcePN
int main() f6DPah#
{ 8gZ5D
std::cout << "Hello, world!" << std::endl; W?.Y%wc0
return 0; }JI5,d
} ]^s4NXf+
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X'0A"9
C++/CLI >~6
;9{@
int main() *?c~7ru
{ zj8;ENhEI
System::Console::WriteLine("Hello, world!"); {|a'
=I#2
} h.DQ6!?;s
ieObo foD
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C# (C Sharp) ~!UxmYgO
class HelloWorldApp \A':}<Rj
{ K\ZKVn
public static void Main() .[~E}O
{ -2f0CAh~
System.Console.WriteLine("Hello, world!"); m0 `wmM
} k%hif8y
} /H\ZCIu/7
;v.l<AOE
$?0<rvGJ
COBOL 0^hz 1\g
IDENTIFICATION DIVISION. ?Hq`*I?b9
PROGRAM-ID. HELLO-WORLD. '*K/K],S]
,5<-\"{]
ENVIRONMENT DIVISION. [3j]r{0I
y1P ?A]v
DATA DIVISION. ~jJu*s$?
(!;4Y82#
PROCEDURE DIVISION. wjY3:S~
DISPLAY "Hello, world!". [j&>dE
STOP RUN. %uQ^mK
Dtn|$g,
+&JF|#FQ`
Common Lisp !DLIIKO78
(format t "Hello world!~%") -OoXb( I4
D`Fl*Wc4H
u U\UULH0
DOS批处理 Q5baY\"9^
@echo off ~?nPp$^
echo "Hello, world!" %2V_%KA
N@*v'MEko%
7kleBDDT
Eiffel x_#yH3kJ
class HELLO_WORLD |rsu+0Mtz
='>k|s:
creation IA''-+9
make : wb\N'b
feature O(CUwk
make is 1#XMUbFc
local AM\`v'I*6
io:BASIC_IO I/fERnHM/+
do }(ot IqE
!!io >a
Q;8
io.put_string("%N Hello, world!") @eR>?.:&
end -- make GN(PH/fO9
end -- class HELLO_WORLD )R,*>-OPJL
H!HkXm"
tXwnK[~x
Erlang J/=b1{d"n
-module(hello). vcqL
-export([hello_world/0]). r*y4Vx7
'Ko
T8g\b
hello_world() -> io:fwrite("Hello, World!\n"). 2#ypM 9
c!E+&5|n
KK/~W
Forth R /iB
." Hello, world!" CR ^+!!:J|ra
e~jp< 4
!=Cd1
$<
Fortran WY #pzBA
WRITE(*,10) iwrS>Sm
10 FORMAT('Hello, World!') L/#^&*'B
STOP {- tCLkE
3
END m8#+w0p)
Lw1~$rZg
Tj@s \@hv
HTML B!yAam#^
<HTML> ,"5Fw4G6*
<HEAD> O~Pbu[C
<TITLE> Hello World! </TITLE> 2Q0fgH2
</HEAD> LeXuTd
<BODY> yLG`tU1
<p>Hello World!</p> +Z#lf
</BODY> 89?AcZ.D
</HTML> PG+ICg
gtqgf<mS
%Gh!h4Pv
HQ9+ !Zlvz%X
H u 6$fF=
>@`D@_v
_T)dmhG
INTERCAL
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PLEASE DO ,1 <- #13 I~gU3(
DO ,1 SUB #1 <- #238 7J.alV4`/
DO ,1 SUB #2 <- #112 !*'uPw:l2
DO ,1 SUB #3 <- #112 Sc`W'q^X
DO ,1 SUB #4 <- #0 =T|Z[/fto
DO ,1 SUB #5 <- #64 Tz:mj
DO ,1 SUB #6 <- #238 k[&+Iy
DO ,1 SUB #7 <- #26 ]|@RWzA
DO ,1 SUB #8 <- #248 Xq` '^)
DO ,1 SUB #9 <- #168 mtvfG
DO ,1 SUB #10 <- #24 uR"(0_
DO ,1 SUB #11 <- #16 "O!J6
DO ,1 SUB #12 <- #158 H3nx8R$j](
DO ,1 SUB #13 <- #52 zkA"2dh
PLEASE READ OUT ,1 ;n?H/(6X8>
PLEASE GIVE UP z%<Z#5_N
&J,MJ{w6"
eZJrV}V
Java 7?Q<kB=f
public class Hello .r[kNh@
b%
{ 8fY1~\G:\
public static void main(String[] args) 049E#[<Q"
{ \,+act"v
System.out.println("Hello, world!"); Dh*Uv,
} C{H:-"\J9
} ^/h,C^/;
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`
zeZ7:
JSP 'P3CgpF<Z2
<% I&,gCZ#
out.print("Hello, world!"); 0sD"Hu
%> [y F>W$Bn%
\'q 9,tP
`%SFu
MIXAL 82O#Fe q
TERM EQU 19 the MIX console device number 0B7cpw>_J
ORIG 1000 start address 07:CcT
START OUT MSG(TERM) output data at address MSG oj/,vO:QT
HLT halt execution _VFl.U,
MSG ALF "MIXAL" z^;*&J
ALF " HELL" $DuX1T
ALF "O WOR" &!x!j,nT
ALF "LD " *fQ$s
END START end of the program fo;Ftf0
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[7]Kvb2t
Nuva #T &z`
<..直接输出..> <xe=G]v
Hello, world! 6nRXRO
N|WZk2 "
<..或者..> K; ,2ag
#
xx{}g]%
<. t2Q40'
`
// 不带换行 BG\g`NK}Z
? "Hello, world!" y9kydu# q
ckY,6e"6
// 或者 (qG |.a
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// 带换行 @F%H 1
?? 'Hello, world!' !B cd\] q
.> w
4-E@>%
f?}~$agc
,<!_MNw[
OCaml ^vw? 4O
let main () = \D}K{P
print_endline "Hello world!";; )FVW/{NF@q
U{6i5;F#H
aZ"9)RJe
Pascal Vj(}'h-c\
program Hello; !*JE%t
begin 1#9qP~#]'{
writeln('Hello, world!'); kqxX!
end. a"ZBSg(
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c
4xh
Perl gb:)t}|
#!/usr/local/bin/perl oNH&VHjU
print "Hello, world!\n"; !#s1'x{o
BiI?eT+
RKB--$ibj
PHP %<8@NbF
<?php sz}YXR=m
print("Hello, world!"); A&u"NgJ
?> CvDy;'{y1
1<g,1TR
aMI\gCB/
Pike /|v:$iH,C
#!/usr/local/bin/pike z'FD{xdf
int main() Sg;c |u
{ S,A\%:Va
write("Hello, world!\n"); s"G;rcS}#
return 0; l;_zXN
} (o`"s~)
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?+EN.P[;3
PL/I eTVI.B@p
Test: procedure options(main); N4y$$.uv2
declare My_String char(20) varying initialize('Hello, world!'); M8j%bmd(,
put skip list(My_String); `uK_}Vy_
end Test; X$z@ *3=
;/.ZjTRw
~{MmUp rS
Prolog u7R:7$H
goal l{OU\
write("hello,world!"). Hp`Mp)1s
e}e|??'(\
E07g^y"}i
Python V-rzn171Q)
#!/usr/local/bin/python I |@'2z2
print "Hello, world!" Ip_S8
;;
cEzWIS?pp\
N#<h/
REXX PW a!7n#A
say "Hello, world!" `72 uf<YQ
P5{|U"Y_
~bL^&o(W
Ruby Ji%6/zV
#!/usr/bin/ruby QI\ &D)
print "Hello, world!\n" @k.j6LKbc
eyPh^c]?`8
gHCk;dmq81
Scheme ODE9@]a
(display "Hello, world!") eLC}h %
(newline) nU]4)t_o\
=FZt
F@=)jrO=$
sed (需要至少一行输入) ?Uz7($}
sed -ne '1s/.*/Hello, world!/p' 'J*)o<%
QvB]?D#h
f?xc-lX5R
Smalltalk n- cEa/g
Transcript show: 'Hello, world!' 49Sq)jd<
G}.t!"
<3]Qrjl
,b
SNOBOL 8'c_&\kdv
OUTPUT = "Hello, world!" -4:L[.2
END 5|zISK%zHS
u[25U;xo
OW$?
6
SQL t%jB[w&,os
create table MESSAGE (TEXT char(15)); N"d*pi#h
insert into MESSAGE (TEXT) values ('Hello, world!'); 'W0?XaEk-
select TEXT from MESSAGE; RJMrSz$
drop table MESSAGE; ?R2`RvQ
gm;6v30e
ep]tio_
Tcl P<@Yux#
#!/usr/local/bin/tcl ==d@0`
puts "Hello, world!" z;x1p)(xt
Yjo$^q
MguH)r`uT
TScript 4BSSJ@z
? "Hello, world!" wr\d5j
gB\
a
0>jo+b\D$
Turing vF45tw
put "Hello, world!" |Tz/9t
>icK]W
G~Oj}rn
UNIX-style shell +*OY%;dQ7@
程序中的/bin/sh可改为您使用的shell 4qw&G