“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。 0ir]
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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》。 >t 3%-Kc
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以下是用不同语言写成的Hello World程序的几个例子: Rw=gg>\
Ada DMsxHAE1
with Ada.Text_Io; use Ada.Text_Io; QUwSnotgU
procedure Hello is sHmzwvpLA
begin wHAoO#`wn5
Put_Line ("Hello, world!"); .G4(Ryh
end Hello; ~bg?V0
5fDVJE "9"
Nz\=M|@(#
汇编语言 gb(a`
0a ZplE,
x86 CPU,DOS,TASM ggXg4~WL
MODEL SMALL J*5 )g
IDEAL m ['UV2
STACK 100H \Om.pOz
K;k&w; j
DATASEG q0SYV
HW DB 'Hello, world!$' MXq+aS{
\l"1Io=
CODESEG e4j:IK>
MOV AX, @data R>BnUIu
MOV DS, AX -5\hZ!!J2
MOV DX, OFFSET HW u
@?n3l
MOV AH, 09H oZQ%P
INT 21H LlrUJ-uC7
MOV AX, 4C00H Xg_M{t
INT 21H f{t5r
END IlN9IF\9L
9l+'V0?`
-}AAA*P
x86 CPU,GNU/Linux,NASM PB(mUD2"r
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). &k+jVymH
;Enter this into "hello.asm" then type: 4w<U%57
;"nasm -f elf hello.asm" f]jAa?d T&
;"ld hello.o -o hello" 6X$]d^)h{
;"./hello" iqRk\yq<
Y1h8O%?
section .data ;data section declaration [:&4 Tp*C
msg db 'Hello World!',0AH x9hkE!{8
len equ $-msg ;string length
ocotO
5RrzRAxq
section .text ;code section declaration [u`v'*0d
global _start ;entry point (start of execution) \L($;8`\
_start: mov edx,len ;string length %scSp&X
mov ecx,msg ;string start }4Ef31X8q
mov ebx,1 ;file handle: stdout "eA4JL\%)
mov eax,4 ;sys_write q@1b{q#C5
int 80h ;kernel system call rF'_YYpr>
z'z_6]5
mov ebx,0 ;return value K-cRNt
mov eax,1 ;sys_exit \vjIw{
int 80h ;kernel system call iO4Yfj#?
h8iic
)*}2L_5]
x86 CPU,Windows,MASM32 (P%{Tab
.386 7k.=_Tl
.model flat,stdcall @eU;oRVc{
option casemap:none Oi+9kk
e
;Include 文件定义 dUegHBw_`R
include windows.inc $ @QF<?i~
include user32.inc x|g>Zd/n
includelib user32.lib V+G.TI
P
include kernel32.inc nd_+g2x'
includelib kernel32.lib (S3\O `5
;数据段 HRS^91aK
.data He @d~9M
szCaption db 'A MessageBox!',0 #&u9z5ywM
szText db 'Hello,world!',0 ~4IkQ|,
;代码段 l|TiUjs
.code 6jyS]($q
start: Kx==vq%39
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 2#%@j6
invoke ExitProcess,NULL >1q
W*
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 'M8wjU
end start xn|M]E1)
2l^hnog|
VJviX[V?4
AWK }TfZ7~o[
BEGIN { print "Hello, world!" } `=TV4h4
P_6JweN
fhp\of/@
R
BASIC
cih[A2lp
传统版BASIC(例如GWBASIC): Q"rQVO
hA 1_zKZ
10 PRINT "Hello, world!" zmaf@T
20 END m3[R
.nh }f}j
或在提示符输入: *L7&P46
onqfmQ,3E
?"Hello, world!":END .{r 0Szm.
}^3CG9%
现代版BASIC(例如Quick BASIC): X0G6Wp
r Z)?uqa
Print "Hello, world!" \zOo[/-<
~gZ"8frl
以下的语句在Quick BASIC中同样有效: ($s%5|
noI>Fw<V
? "Hello,world!" 'y_<O |-
s9^r[l@W0U
?D[9-K4Vn
BCPL SWwL.-+E]
GET "LIBHDR" 9vX~gh{]~
9=RfGx
LET START () BE A:Y
([
$( +8p4\l$<`
WRITES ("Hello, world!*N") pSMF1Oy
$) FLf< gz
A<$~Q;r2a
tE=;V) %we
Befunge )w/ #T
"!dlrow olleH">v 3(&f!<Uy
, "wqN,}bj\
^_@ Uphme8SX
$>if@}u
VDy2!0
Brainfuck Kd,8PV*_
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< K9G1>*
+++++++++++++++.>.+++.------.--------.>+.>. ZH<:g6
A?)nLp&Y
kz=Ql|@
C ZRCm'p3
#include <stdio.h> )(CZK&<
m+m2<|%x
int main(void) J]mG!# 9
{ #M/^n0E
printf("Hello, world!\n"); 76 ]X
return 0; d-%bRGo/
} #LU<v
"|k 4<"]
NAg9EaWja{
C++ `|rF^~6(dR
#include <iostream> ,ICn]Pdz@
2?c##Izn
int main() ]:"<if gp$
{ Q3h_4{w
std::cout << "Hello, world!" << std::endl; .R";2f3
return 0; ~9ZW~z'
} z.vERP56
Qvc$D{z
3fBV
SFVS
C++/CLI =(aA`:Nl
int main() qz_'v{uAj
{ >v?&&FhHK<
System::Console::WriteLine("Hello, world!"); "O (N=|b
} sd
m4zV]&
),!1B%
H\vd0DD;
C# (C Sharp) L|hoA9/]
class HelloWorldApp
m.6O%jD
{ UgD|tuz]
public static void Main() C
9{8!fYp
{ gc6Zy|^V4`
System.Console.WriteLine("Hello, world!"); 4>t'4p6{
} on^m2pQ
*p
} \>]C
aTWCX${~b
w!kWG,{C
COBOL '73g~T%$^*
IDENTIFICATION DIVISION. 'X%5i2
PROGRAM-ID. HELLO-WORLD. |43dyJW
rGDx9KR4K!
ENVIRONMENT DIVISION. T%Nm
'-KYeT\;
DATA DIVISION. d YliC
DWwPid}
"
PROCEDURE DIVISION. F$6JzF$|F
DISPLAY "Hello, world!". Mil+> X0
STOP RUN. 3QF/{$65!
w\}@+w3b~
GZt L-
Common Lisp OaH1xZNOC`
(format t "Hello world!~%") \#(tI3
&02I-lD4+
+x(~!33[G
DOS批处理 0d|DIT#>?
@echo off =F<bAZ
echo "Hello, world!" 7TU(~]Z
g15~+;33N
YQ-!>3/)-
Eiffel )W,.xP
class HELLO_WORLD @{q:179w^
cF V[k'F
creation +Y!
P VMF
make WcHL:38
feature y>! 8mDvZ
make is nl)l:A+q8
local ascY E
io:BASIC_IO ,j!%,!n o
do cp_<y)__
!!io 5._1G| 3
io.put_string("%N Hello, world!") $a#-d;
end -- make Fm#`}K_
end -- class HELLO_WORLD T0e- X
Z#NEa.]
sS{!z@\Lf
Erlang :9~LYJ
?
-module(hello). E'
_6v
-export([hello_world/0]). `i5 \(cdl
MLT^7'y
hello_world() -> io:fwrite("Hello, World!\n"). UP .4# 1I
X#Sgf|$
0&$,?CL?
Forth MU>6s`6O
." Hello, world!" CR 5<$8.a#
=9!|%j
k -!Jww
Fortran `8lS)R!
WRITE(*,10) e.VQ!)>
10 FORMAT('Hello, World!') B{ tROuN<
STOP 'ju'O#A9
END }bZb8hiG
S;K5JBX0#
[/Sk+ID
HTML $W;f9k@C!
<HTML> jB"IJ$cD
<HEAD> JKTn
<TITLE> Hello World! </TITLE> ,<s/K
</HEAD> AL{iQxQ6
<BODY> :|%1i>O
<p>Hello World!</p> 8J)Kn4jq
</BODY> ZJ8"5RW
</HTML> }eAV8LU
><xJQeW
eb>jT:
HQ9+ lOy1vw'
H <nU8.?\?~
H7
"r^s]D
b5)a6qtb
INTERCAL 5p]V/<r
PLEASE DO ,1 <- #13 RxE.t[
DO ,1 SUB #1 <- #238 B9dc*
DO ,1 SUB #2 <- #112 f= A`{8^
DO ,1 SUB #3 <- #112 r
m
DO ,1 SUB #4 <- #0 K=1prv2
DO ,1 SUB #5 <- #64 _<%YLv
DO ,1 SUB #6 <- #238 /'a\$G"%6
DO ,1 SUB #7 <- #26 w0X})&,{`m
DO ,1 SUB #8 <- #248 FQ"ED:lks
DO ,1 SUB #9 <- #168 = N^Ec[u(l
DO ,1 SUB #10 <- #24 4rLc]
>
DO ,1 SUB #11 <- #16 #T=e p0
DO ,1 SUB #12 <- #158 M#k$[w}=
DO ,1 SUB #13 <- #52 xW|8-q
PLEASE READ OUT ,1 4\E1M[ 6
PLEASE GIVE UP u'T?e+=
4_-L1WH
@E4ya$A)F
Java Q`!^EyRA:^
public class Hello ~t1?oJ
{ ~ycWcZi>
public static void main(String[] args) 2f6BZ8H+Z
{ BvS!P8
System.out.println("Hello, world!"); NJCSo(O
} AC*SmQ\>!
} PqMu2 e
wf_ $#.;m
~^PNMZk
JSP i&q_h>ZTg
<% 8g {;o7
out.print("Hello, world!");
8 ,W*)Q
%> Bbtc[@"X
3^iVDbAW{
|AXV4{j_i
MIXAL @RZbo@{~
TERM EQU 19 the MIX console device number ~ike&k{
ORIG 1000 start address ftz-l&5
START OUT MSG(TERM) output data at address MSG [P|kY
HLT halt execution `>GXJ~:D["
MSG ALF "MIXAL" JS/~6'uB
ALF " HELL" oB(9{6@N
ALF "O WOR" #O{cplh,
ALF "LD " w"O{@2B3:H
END START end of the program ^{YK'60
{v"Y!/
[z
Jn%Etz-
Nuva e8M0Lz#}
<..直接输出..> DVt^O[
Hello, world! D`fIw`
_
_>bk'V7
<..或者..> TK0WfWch
>)HKruSW.
<. BMtk/r/
// 不带换行 shEAr*u
? "Hello, world!" N8DouDq
FNs$k=*8
// 或者 @{Dfro
FOhq&\nkU
// 带换行 qDcoccEf
?? 'Hello, world!' $b[Ha{9(v
.> 8|nc($}~
x`Wb9[u8
&Ez+4.srkh
OCaml Fkg%_v$
let main () = ^Rtxef
print_endline "Hello world!";; c
D.;
X3][C
9e4`N"#,lI
Pascal P$]K
program Hello; nvA7eTO6C
begin L
F&!od9[
writeln('Hello, world!'); 2D a0*xn{
end. 2.^CIJc
DXFDs=u
r?w>x`
Perl jxZf,]>T
#!/usr/local/bin/perl Dk&(QajL
print "Hello, world!\n"; ~pHuh#>
h/2@4XKj
%<r}V<OeR
PHP F&lH5
<?php E@6gTx*
print("Hello, world!"); a|(|!=
?> 5A^8?,F@
$inKI
j\NCoos
Pike B)/c]"@89
#!/usr/local/bin/pike qO/3:-
int main() #*%?]B=
{ 7VskZbj\
write("Hello, world!\n"); 6@"E*-z$
return 0; =A~5?J=
} 8kC$Z )
+p&zM3:9w
WJI}~/z;C
PL/I [mj=m?j
Test: procedure options(main); cB_9@0r[S
declare My_String char(20) varying initialize('Hello, world!'); J@QOF+ &
put skip list(My_String); DliDBArxZ
end Test; k2fJ
gvPHB+#A
H/k]u)Gtv
Prolog Y]^*mc0fE
goal eA{A3.f"Hz
write("hello,world!"). 72/ bC
7IQaXcl
'T(Q
Python |onLJY7)
#!/usr/local/bin/python {NcJL< ;tS
print "Hello, world!" VbTX;?
|`pBI0Sjo
Dm$SW<!l|
REXX 4.Fh4Y:$'
say "Hello, world!" um%s9
mY[*Cj3WJ
atW^^4:
Ruby xAO\' #m
#!/usr/bin/ruby df {\O*6
print "Hello, world!\n" Ujqnl>l
/D yig
i[MBO`FF
Scheme y~Yv^'Epf
(display "Hello, world!") ,7 m33Pv*
(newline) IWm@pfC+g
bxO[y<|XL
:'xZF2
sed (需要至少一行输入) {<a)+S.6U
sed -ne '1s/.*/Hello, world!/p' gPA8A>U)[
\gK'g-)}
xwW(WHdC]
Smalltalk Q@8(e&{#W
Transcript show: 'Hello, world!' +>AVxV=A#
K>5bb
LN5BU,4=
SNOBOL F_i"v5#
OUTPUT = "Hello, world!" #f;6Ia>#
END X\w["!B
cvf?ID84
j?T>S]xOX
SQL BHS@whj
create table MESSAGE (TEXT char(15)); q2OF-.rE
insert into MESSAGE (TEXT) values ('Hello, world!'); }}u`*&,g
select TEXT from MESSAGE; &;WK=#
drop table MESSAGE; lxbC 7?O
M+^ NF\
8zcSh/
Tcl f`K#=_Kq7
#!/usr/local/bin/tcl M,yxPHlN
puts "Hello, world!" I,05'edCQ
+uj;00 D
IP-M)_I
TScript NPFI^Uj#A
? "Hello, world!" N H:Bdl3
9i
lJ
8e
?9:VM]
Turing +2k{yl
put "Hello, world!" f}KV4'n
!KT.p2\
#;lEx'lKN
UNIX-style shell T+t7/PwC;
程序中的/bin/sh可改为您使用的shell W5e>Z&&
A|@d{g
#!/bin/sh k]P'D
.
echo 'Hello, world!' :Ig9n:
YHke^Ind
(CtRU
GUI *a0#PfS[
aIr"!. 4
Delphi Sn
7h$
program HelloWorld; 1{RA\CF
uses %KN2iNq
Dialogs; <g\:By^
begin aqI m W
ShowMessage('Hello, World!'); :;hm^m]Y
end. a;kiAJ'
jsF5q~F
<Wj/A/
Nuva TEGg)\+D>
<. Im};wJ&
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) bE=[P}E
.> *lu*h&Y