“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。 )U]:9)
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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》。 ?THa5%8f
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以下是用不同语言写成的Hello World程序的几个例子: ed=n``P~}
Ada #jOOsfH|k
with Ada.Text_Io; use Ada.Text_Io; dV)Y,Yx0${
procedure Hello is
\|blRm;
begin WFRsSp2
Put_Line ("Hello, world!"); ~m!#FTc*
end Hello; n%n'1AUP:
R9Ldl97'
#t){ 4J
汇编语言 k]t,q$Vd
xna7kA
x86 CPU,DOS,TASM 'y< t/qo
MODEL SMALL b By'v/
IDEAL Ywmyr[Uh'
STACK 100H akMJ4EF/
ccRlql(
DATASEG )4@M`8
HW DB 'Hello, world!$' J`4Z<b53
Kq$:\B)<c
CODESEG ZT r:xX{R6
MOV AX, @data cW=Qh-`jU;
MOV DS, AX FMoJ"6Q
MOV DX, OFFSET HW HJc<Gwm
MOV AH, 09H *U:VM'a
INT 21H kea e.6[
MOV AX, 4C00H uFz/PDOZ@
INT 21H 3(MoXA*
END d:A\<F
H3!,d`D.N
_MGNKA6JI
x86 CPU,GNU/Linux,NASM ;9}w|!/
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). o1
jk=
;Enter this into "hello.asm" then type: 3xRM
1GgO
;"nasm -f elf hello.asm" n/xXQ7y
;"ld hello.o -o hello" |!{z?
i
;"./hello" km9Gwg/zT
5BrU'NF
section .data ;data section declaration lq~GcM
msg db 'Hello World!',0AH B.V?s,U
len equ $-msg ;string length >s;oOo+5
izXbp02
section .text ;code section declaration ${wU+E*
global _start ;entry point (start of execution) Y,3z-Pa=@
_start: mov edx,len ;string length u9esdOv
mov ecx,msg ;string start `Q:de~+AM{
mov ebx,1 ;file handle: stdout ~&t!$
mov eax,4 ;sys_write { k
kAqJ
int 80h ;kernel system call lt }r}HM+
;+TMx(
mov ebx,0 ;return value 7ESN!
mov eax,1 ;sys_exit J>><o:~@
int 80h ;kernel system call k}- "0>
%=laY_y
G
lq;
x86 CPU,Windows,MASM32 /7c2OI=\
.386 mk#>Dpy?
.model flat,stdcall r3n=<l!Jr
option casemap:none UAnB=L,.\
;Include 文件定义
fn4=
include windows.inc ~C%2t{"
include user32.inc f+*J
ue
includelib user32.lib Rbx97(wK
include kernel32.inc QIR4<]/
includelib kernel32.lib Su$18a"Bc
;数据段 `2Wl
.data }9{dR4hD
szCaption db 'A MessageBox!',0 hfJrQhmE
szText db 'Hello,world!',0 H|grbTv,
;代码段 &mX5&e
.code `Af{H/qiI
start: _{N0OX
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK T+`xr0
invoke ExitProcess,NULL *!._Ais,\
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> }rO?5
end start yTzY?
*rS9eej
L4MxU 2
AWK xnJjCEZ
BEGIN { print "Hello, world!" } aQz|!8Is
i}.{m Et
qzuQq94k
BASIC pWWL{@ J
传统版BASIC(例如GWBASIC): A~qW.
qFvg}}^y
10 PRINT "Hello, world!" ~5lKL5w
20 END _<u8%\
vpZu.#5c
或在提示符输入: 1"8Z
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N BV}4
?"Hello, world!":END *ah>-}-
v_y!Oh?EG
现代版BASIC(例如Quick BASIC): 6a "VCE]
z7OZ4R:
Print "Hello, world!" *ge].E
^+(A&PyP?
以下的语句在Quick BASIC中同样有效: *>H M$.?Q
"6NFe!/Y$*
? "Hello,world!" Dj-\))L
<dju6k7uz
;cM8EU^.
BCPL 1x~%Ydy
GET "LIBHDR" 7P3<o!YA
KzEuPJ?
LET START () BE Qv9*p('~A
$( hgTM5*fD}
WRITES ("Hello, world!*N") -@EBbM&
$) zvek2\*rO
(|yRo
jF%)Bhn(
Befunge r
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"!dlrow olleH">v /e-ka{WS
,
zjluX\
^_@ AzLbD2Pl
N?MJ#lC
F
3v8V*48B$
Brainfuck }-REBrb-
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< r;&]?9)W0
+++++++++++++++.>.+++.------.--------.>+.>. -mev%lV
c!'A)JD@
Ze[g0"
C Y9IJ
#include <stdio.h> C m,*bgX
@<@R=aqE
int main(void) _&k'j)rg
{ uM6CG0
printf("Hello, world!\n"); (PCimT=5
return 0; |<|28~#
} n/9 LRZD|w
N0y;PVAGu
J6@(X8w{j
C++ Nz(c"3T;
#include <iostream> VxUvvJ{-v
uR06&SaA>
int main() )@8'k]Glw.
{ _aXP
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std::cout << "Hello, world!" << std::endl; ?D*Hl+iu
return 0; ?$"x^=te7
} SY!`a:It
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RZ#alFL,
C++/CLI ]p4`7@@)*
int main() #}[Sj-Vp
{ ^%K1R;
System::Console::WriteLine("Hello, world!"); >,w\lf9
} rh:s
7
TTA{#[=7
Z^/z
C# (C Sharp) VYl_U?D
class HelloWorldApp bqw/O`*wfN
{ A&NC0K}G!
public static void Main()
D\45l
{ *6 z'+'
System.Console.WriteLine("Hello, world!"); J[j/aDdP
} v7{ P].M
} I2t-D1X
nvO%
EuKrYY] g
COBOL Z/V`Z* fy
IDENTIFICATION DIVISION. UA69_E{JCH
PROGRAM-ID. HELLO-WORLD. )#b}qc#`
_/QKWk&j
ENVIRONMENT DIVISION. *([0"
)V[w:= *
DATA DIVISION. h3UZ|B0=
Gx(K N57D
PROCEDURE DIVISION. wf~5lpI[
DISPLAY "Hello, world!". xWenKY,
STOP RUN. }AMYU>YE=
%8Z|/LGg
|:7EJkKZ
Common Lisp FT*yso:X/
(format t "Hello world!~%") 6SW|H"!!
r)9i1rI+
_g^K$+F'}
DOS批处理 CI~hmL0
@echo off 5@R15q@c6n
echo "Hello, world!" ~_dBND?
K]H"qG.K
A:8FJ 3'
Eiffel <eud#v
class HELLO_WORLD K%[}[.cW
1}n)J6m
creation %T&&x2p^=?
make uJ|5Ve
feature IEIxjek
make is P\*2c*,W;
local W G3mQ\k
io:BASIC_IO dN$D6*
do 3&a*]
!!io X*0eN3o.
io.put_string("%N Hello, world!") C)&gL=O*$
end -- make _-|yCo
end -- class HELLO_WORLD tK s4}vW
;9!yh\\
|h^G $guw
Erlang vjs|!O=oH
-module(hello). gNEzlx8A
-export([hello_world/0]). H649J)v+m
;i-D~Np|
hello_world() -> io:fwrite("Hello, World!\n"). ^huBqEs
^V XXq
${TB2q}%
Forth Gpxb_}P
." Hello, world!" CR O9qKwn;q(
By"^ Z`EP4
}Yo15BN+
Fortran W{$+mow7S
WRITE(*,10) '$kS]U
10 FORMAT('Hello, World!') tvj'{W
STOP lk+=26>
END xdbu|fC
\K_!d]I {
Q8gdI
HTML mTXNHvv
<HTML> %Zl_{Q]h
<HEAD> T_oW)G
<TITLE> Hello World! </TITLE> #/XK&(X
</HEAD> G8<It5CU
<BODY> 1^WA
<p>Hello World!</p> g`~lIt[=
</BODY> mISuo
</HTML> rvoS52XG,
yN WbI0a
W"}*Q-8W
HQ9+ <4!&iU+;
H R^u^y{ohr
sxC{\iLY%
S{"6PXzb
INTERCAL @|\s$L
PLEASE DO ,1 <- #13 gE6y&a
DO ,1 SUB #1 <- #238 *NwKD:o
DO ,1 SUB #2 <- #112 }07<(,0n
DO ,1 SUB #3 <- #112 !g8.8(/t)
DO ,1 SUB #4 <- #0 d'g{K]=tF
DO ,1 SUB #5 <- #64 0| DG\&?
DO ,1 SUB #6 <- #238 D)/XP
DO ,1 SUB #7 <- #26 !3X%5=#L4
DO ,1 SUB #8 <- #248 k+m_L{#m5
DO ,1 SUB #9 <- #168 *> &N
t
DO ,1 SUB #10 <- #24 !Pi?
!
DO ,1 SUB #11 <- #16 9V4V}[%
DO ,1 SUB #12 <- #158 On96N|
DO ,1 SUB #13 <- #52 S}xDB
PLEASE READ OUT ,1 (?&_6B.*
PLEASE GIVE UP ["#A -S
+DV6oh
C)3$";$5)
Java h}B# 'e
public class Hello 6 peM4X
{ <,]CVo
public static void main(String[] args) |z<wPJ,;2
{ ^)0{42!]
System.out.println("Hello, world!"); {</$ObK
} 6'sFmC
} Vp-OGX[
cwW~ *90#
- m x3^
JSP @9kk
f{?
<% 8Jy1=R*S
out.print("Hello, world!"); W!Ct[t
%> y3o4%K8
M3Z Jt' |
[2j(\vC!
MIXAL H R!>g
TERM EQU 19 the MIX console device number j>Bk; f|
ORIG 1000 start address Y,pS/
START OUT MSG(TERM) output data at address MSG Mb/6>
HLT halt execution ,LPFb6o
MSG ALF "MIXAL" zH\;pmWiN9
ALF " HELL" j
n&9<"W
ALF "O WOR" r;6YCI=z
ALF "LD " 0R^(rE"2#
END START end of the program VV}fW"_ND
gZ=9Y:$
C2,cyhr
Nuva 4[EO[x4C
<..直接输出..> v%8-Al^G
Hello, world! ;0X|*w1JO
Ynh4oWUp
<..或者..> {^19.F
#y9K-}u
<. ^[\53\R~
// 不带换行 *1$~CC7
? "Hello, world!" .L TFa.jxA
O>):^$-K%
// 或者 #pn AK
2'^OtM,
// 带换行 H2_>Av{m
?? 'Hello, world!' Zz*mf+
.> [6gHi.`p'
%Ja{IWz9L
Hr,lA(
OCaml ZxeE6M^w
let main () = y2% ^teXk
print_endline "Hello world!";; F-\8f(\
tlxjs]{0E
kd4*Zab
Pascal +n~rM'^4/
program Hello; 9M~$W-5
begin \,#4+&4b
writeln('Hello, world!'); 7Hlh
(k
end. >5},qs:lZ
3$G25=eN
2F@<{v4
Perl )xy{[ K|M(
#!/usr/local/bin/perl C%o/
print "Hello, world!\n"; KZ/^gR\d
L$?~TY
Zu73x#pI
PHP 3bL2fsn5
<?php WoG
print("Hello, world!"); Oy`\8*Uy__
?> =xWW+w!r
dSD}NM
9v3Nba
Pike &$Ip$"H
#!/usr/local/bin/pike 2<. /HH*f
int main() ;}9Ws6#XQs
{ ^p%+r B.j[
write("Hello, world!\n"); jP6G.aiO
return 0; tfIBsw.
} B-p5;h>
K>JU/(
kT=|tQ@
PL/I 3A/MFQ#2
Test: procedure options(main); 8ewEdnE
declare My_String char(20) varying initialize('Hello, world!'); ZrT|~$*m`
put skip list(My_String); <;Z~ vZ]
end Test; -ns a3P
{"AYOc>2|
s+G9L)b'
Prolog 5{f/H]
P
goal zw:b7B]
write("hello,world!"). zYJ`.,#C 5
a9JJuSRC
Vk=<,<BB
Python Vx8.FNJh
#!/usr/local/bin/python m`0{j1K
print "Hello, world!" EGO@`<"h
tD482Sb=
U,}T ]J
REXX T $]L 5
say "Hello, world!" >a~FSZf
\V\ET
'QS~<^-j"
Ruby APm[)vw#f
#!/usr/bin/ruby }j@@
print "Hello, world!\n" \>k#]4@rp
v"TH[}C9D
u<r('IW0
Scheme @
MoMU
(display "Hello, world!") A+*(Pds
(newline) J, U~.c
R.$Y1=U6
D"aQbQP
sed (需要至少一行输入) 6j![m+vo%
sed -ne '1s/.*/Hello, world!/p' l),13"?C(
32' 9Ch.
%R "nm
Smalltalk :#KURYO<
Transcript show: 'Hello, world!' }+Z;zm@/6
ttt&sW`
+/8?+1E ^
SNOBOL O3GaxM\x
OUTPUT = "Hello, world!" td$Jx}'A
END u3!!_~6,z
G?(:Z=
y`Y}P1y*
SQL 01w/,r
create table MESSAGE (TEXT char(15)); $l"(tB7d
insert into MESSAGE (TEXT) values ('Hello, world!'); 0tyU%z{RV
select TEXT from MESSAGE; Li$k<AM
drop table MESSAGE; 'v)+S;oB
S8<aq P
+& Qqu`)?F
Tcl @2O\M ,g5
#!/usr/local/bin/tcl @3D%i#2o&[
puts "Hello, world!" zOp"n\
8)ol6Mi{
l8li@K
TScript j* ja)
? "Hello, world!" DzOJ{dF
:fUmMta
?7s
Turing 0 ']M,iC/
put "Hello, world!" n-WvIy
+g30frg+Gl
5lY9
UNIX-style shell KwyXM9h6=
程序中的/bin/sh可改为您使用的shell M,lu)~H
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