“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。 `,ZsKxI
MWGW[V;
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》。 <Yfk7Un
?4wS/_C/
以下是用不同语言写成的Hello World程序的几个例子: NKd!i09`
Ada c[ @-&o`
with Ada.Text_Io; use Ada.Text_Io; +_uT1Ps BY
procedure Hello is djV^A
begin _wp6rb:8!
Put_Line ("Hello, world!"); P:&XtpP
end Hello; |4BS\fx~N
W:8_S%~d
W0eb9g`s
汇编语言 -Cv:lJj
g*Nc+W](P>
x86 CPU,DOS,TASM tF SO "
MODEL SMALL HF}%Ow
IDEAL } pE<P;\]k
STACK 100H #/t^?$8\\
Pq`]^^=be'
DATASEG ^R\0<\'
HW DB 'Hello, world!$' WlU^+ctS
b Mi,z3z
CODESEG Iz^~=yV)
MOV AX, @data zh)qo
MOV DS, AX N~L3
9
MOV DX, OFFSET HW 6rMGlzuRo
MOV AH, 09H D]v=/43
INT 21H }s{RW<A
MOV AX, 4C00H OOS(YP@b
INT 21H ! FbW7"yE
END 0V
,R|Ln
/\_`Pkd3m
-:t<%]RfY
x86 CPU,GNU/Linux,NASM 0 } uEM_a
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). lN*O</L,"
;Enter this into "hello.asm" then type: FR_R"p
;"nasm -f elf hello.asm" ?B@(W(I
;"ld hello.o -o hello" Z8+{ -
;"./hello" ^Fgmwa'
ZWaHG_
U)
section .data ;data section declaration .)|r!X
msg db 'Hello World!',0AH =Y>_b
2
len equ $-msg ;string length ['j_W$8n
61>@-55k9
section .text ;code section declaration oe,L&2Jz@
global _start ;entry point (start of execution) ;1^_.3
_start: mov edx,len ;string length ZP5.?A-=C
mov ecx,msg ;string start +CtsD9PA
mov ebx,1 ;file handle: stdout sG*1 ?
mov eax,4 ;sys_write ^yg`U(
int 80h ;kernel system call =8[4gM+
:Lqz`
mov ebx,0 ;return value :VC#\/f
mov eax,1 ;sys_exit Wfgs[
int 80h ;kernel system call Au,xIe!t
7k}[x|u
iZ2|/hnw
x86 CPU,Windows,MASM32 7H~StdL/>
.386 1a4
[w
.model flat,stdcall 8nw_Jatk1
option casemap:none _]H$rf,Rc
;Include 文件定义 VU`aH9g3(
include windows.inc ) D:M_T2
include user32.inc =7pLU+ u
includelib user32.lib thcj_BZ8
include kernel32.inc #n5q$
includelib kernel32.lib Dz;^'
;数据段 833KU_ N
.data 0<75G6wd
szCaption db 'A MessageBox!',0 )MqF~[k<-
szText db 'Hello,world!',0 Rf2$k/lZ
;代码段 nAv@^G2
.code #aUe7~
start: pfsRV]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK T<kyxbjR
invoke ExitProcess,NULL cLR02
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ! 4 `any
end start ' p,QI>
F
}l_=
s,>1n0a
AWK '^"6EF.R
BEGIN { print "Hello, world!" } ^;4nHH7z-,
S*~v9+
6n37R#(
BASIC zbn0)JO
传统版BASIC(例如GWBASIC):
e 5U<nf
] )D\ws)a9
10 PRINT "Hello, world!" C^I h"S
20 END Qa~dd{?
"J^M@k\!
或在提示符输入: +~mBo+ ,
`r;e\Cp
?"Hello, world!":END !/O c)Yk
j;@7V4'
现代版BASIC(例如Quick BASIC): Rr+Y::E
*+TIF"|1
Print "Hello, world!" Kt3/C'zu
f.,ozL3*
以下的语句在Quick BASIC中同样有效: =;Gy"F1 dp
w.exLC
? "Hello,world!" C'3/B)u}l
'}h[*IB}5
6KP"F[8I
BCPL /Y|oDfv
GET "LIBHDR" n|
=k9z<y8
?h4-D:!$L
LET START () BE @(2DfrC
$( -#T?C]}
WRITES ("Hello, world!*N") >i=^Mh-bm
$) f.rc~UI?
Gr6XqO_
$$+6=r}
Befunge ;,GE!9HW
"!dlrow olleH">v 3Tv;<hF
, >AIkkQT
^_@ ilL] pU-
odAeBQy
9Cbf[\J!bq
Brainfuck {'P7D4w
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< mf]1mG})
+++++++++++++++.>.+++.------.--------.>+.>. Z'iXuI49
+4U ?*:n
sS#Lnj^`%
C !X721lNP
#include <stdio.h> Wi ]Mp7b
Xi3:Ok6FZ
int main(void) s\g"~2+
{ ]h8[b9$<")
printf("Hello, world!\n"); ~ldqg2c
return 0; & %4x
} <wV?B9j
afY~Y?PJ<
J5PXmL
C++ Dlhb'*@
#include <iostream> 3 "fBp
]&%_Fpx
int main() m }I@:s2
{ q]+'{Ci@
std::cout << "Hello, world!" << std::endl; ;~Y0H9`
return 0; .T0w2Dv/
} N3 qtq9{
Yg@k+
=jZ}@L/+
C++/CLI +$R4'{9q
int main() u'}SaX]0
{ #M$Gj>E%4
System::Console::WriteLine("Hello, world!"); kd^CZ;O
} Tvf%'%h1
^6Y4=
J
WaI[n}
C# (C Sharp) sCG[gshq
class HelloWorldApp RL0,QC)e#@
{ YB{hQ<W
public static void Main() a~>.
{ rMkoE7n
System.Console.WriteLine("Hello, world!"); !#P|2>>u
} 63R?=u@
} OrN>4S
(}1 gO
\]pRu"
COBOL ;ew j
IDENTIFICATION DIVISION. <:=}1t.Z
PROGRAM-ID. HELLO-WORLD. B;f\H,/59
U_!Wg|
ENVIRONMENT DIVISION. QRbiO
LPr34BK
DATA DIVISION. R$qp3I
D90m..\w
PROCEDURE DIVISION.
LJ7Qwh_",
DISPLAY "Hello, world!". 3D<s#
STOP RUN. D{1k{/cF
3Z.<=D
'r_{T=
Common Lisp O/EI8Qvm
(format t "Hello world!~%") IK~'ke
!bEy~.
a(>oQG8F
DOS批处理 4t3Y/X
@echo off 0N02 E
echo "Hello, world!" D|`O8o?)
!Yuu~|
7q_B`$ata
Eiffel @&!`.Y oy
class HELLO_WORLD Th&-n%r9K
8%-+@\=
creation KI&+Zw4VL
make SymBb}5
feature bF'Y.+"dr
make is pU4k/v555;
local VKUoVOFvPR
io:BASIC_IO $#q:\yQsPC
do \ZSZ(p#1
!!io q1C) *8*g
io.put_string("%N Hello, world!") rybs9:_}
end -- make cs0;:H*N*
end -- class HELLO_WORLD 09FHE/L
~dkN`1$v
%mLQ'$
Erlang bvVEV
-module(hello). dg#w/}}m
-export([hello_world/0]). 3/+r*lv>X
qfF/X"#0
hello_world() -> io:fwrite("Hello, World!\n"). ')]K&
\KmgFyF
tuZA q;X
Forth }O=QXIF5
." Hello, world!" CR u#TRm?s
v/ dyu
frB~ajXK
Fortran (J!FW(Ma|=
WRITE(*,10) Mf [v 7\
10 FORMAT('Hello, World!') '9O4$s1
STOP zMZP3
xir
END n/ ]<Bc?
pv/LTv
@KtQ~D
HTML #Av6BGM|,
<HTML> QuEfV ?)_4
<HEAD> CUz1q*):
<TITLE> Hello World! </TITLE> Snm
m(.
</HEAD> $"VgNynq
<BODY> O3H~|R+^
<p>Hello World!</p> *dB^B5
</BODY> Wz}DC7
</HTML> Dw\)!,,i7U
y_aKW4L+
QL_~E;U
HQ9+
{@XzY>
H 5v1f?btc
-p|JJx?r
wD(1Sr5n
INTERCAL <Uz~V;
PLEASE DO ,1 <- #13 *Ru@F:
DO ,1 SUB #1 <- #238 IP)?dnwG
DO ,1 SUB #2 <- #112 ^;on
DO ,1 SUB #3 <- #112 ?|Q[QP
DO ,1 SUB #4 <- #0 _oOEMQb
DO ,1 SUB #5 <- #64 9wR-0E
)
DO ,1 SUB #6 <- #238 vkFfHzR$
DO ,1 SUB #7 <- #26 Ww(($e!
DO ,1 SUB #8 <- #248 @|yRo8|
DO ,1 SUB #9 <- #168 ']'H8Y-M
DO ,1 SUB #10 <- #24 }o>6 y>=
DO ,1 SUB #11 <- #16 F_KPhe$
DO ,1 SUB #12 <- #158
kzZdYiC
DO ,1 SUB #13 <- #52 N*d
)<8_
PLEASE READ OUT ,1 D%PrwfR
PLEASE GIVE UP r&^LSTU0!
&c;@u?:@S
3$cIm+
Java >0#WkmRY
public class Hello \tL9`RKpg
{ G$hH~{Y$
public static void main(String[] args) >G4EiJS
{ '
KX'{Gy
System.out.println("Hello, world!"); k-o(Q"[ '
} x2@Q5|a
} ;4E.Yr*
M$|r8%z1
1h.Ypzu
JSP ho5mH{"OV
<% `R}q&|o7<
out.print("Hello, world!"); axf 4N@
%> /CpU.^V
DA>_9o/l
L;wfTZa
MIXAL SZGeF;N
TERM EQU 19 the MIX console device number D{b*,F:&@)
ORIG 1000 start address N$Pi4
START OUT MSG(TERM) output data at address MSG ?kOtK
HLT halt execution B.zRDB}i=
MSG ALF "MIXAL" >Ln/ )j
ALF " HELL" ?]JTrv"zp
ALF "O WOR" [^iQE
ALF "LD " 6\8
lx|w
END START end of the program s)?=4zJ
J;?#Zt]`L
<r[5 S5y
Nuva [&6VI?
<..直接输出..> *}yOL
[
Hello, world! :n1^Xw0q
?Hb5<,1u3
<..或者..> XYBvM]
jzRfD3_s
<. fgmu*\x<