“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。 p\F%Nj,
8D,*_p
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》。 6>)nkD32g
B f]Bi~w<
以下是用不同语言写成的Hello World程序的几个例子: "P54|XIJ\
Ada Q;!rN)
with Ada.Text_Io; use Ada.Text_Io; m{?f,Q=u@
procedure Hello is uwr7 .\7
begin mo] l_'
Put_Line ("Hello, world!"); EApbaS}Up
end Hello; 5ya^k{`+ZO
vp.?$(L^@/
{V[}#Mf
汇编语言 J|DZi2o
-W<1BJE
x86 CPU,DOS,TASM Gyy4zK
MODEL SMALL EwU)(UK
IDEAL k.K#i /t
STACK 100H ;b~\[
% @+j@i`&
DATASEG QIevps*
HW DB 'Hello, world!$' 'L-DMNxBr
0Ci/-3HV!
CODESEG {>9ED.t
MOV AX, @data *B}O
MOV DS, AX 3
V>$H\H
MOV DX, OFFSET HW e0(aRN{W
MOV AH, 09H Cl9 nmyf
INT 21H ..+#~3es#y
MOV AX, 4C00H 4oueLT(zc
INT 21H O!{YwE8x9
END Bt(<Xj D
h9CTcWGt
^V#,iO9.-
x86 CPU,GNU/Linux,NASM 3\Q 9>>
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). /e?0Iv"
8>
;Enter this into "hello.asm" then type:
: v;U7
;"nasm -f elf hello.asm" dpscgW{M
;"ld hello.o -o hello" )7NI5x^$
;"./hello" $--+M
D29Q
F.5fasdX'
section .data ;data section declaration h]k$K
msg db 'Hello World!',0AH h_S>Q
len equ $-msg ;string length L YF|
P/|1,Sk
section .text ;code section declaration c$71~|-[
global _start ;entry point (start of execution) K)~a H
_start: mov edx,len ;string length {vCtp
mov ecx,msg ;string start 1^X)vck
mov ebx,1 ;file handle: stdout ;l0dx$w
mov eax,4 ;sys_write Z%:>nDZV
int 80h ;kernel system call y32$b,%Xi,
KNd<8{'.
mov ebx,0 ;return value L/exR6M7
mov eax,1 ;sys_exit /*,_\ ;
int 80h ;kernel system call ktx| c19
D_0Vu/v
HOFxOBV
x86 CPU,Windows,MASM32 p^|l ',e
.386 ,&WwADZ-s
.model flat,stdcall O.ce= E
option casemap:none vQK/xg
;Include 文件定义 bIyg7X)/
include windows.inc 7g(Z@
include user32.inc (BeJ,K7
includelib user32.lib 6`@J=Q?
include kernel32.inc *|dK1'Xr
includelib kernel32.lib
Pap6JR{7
;数据段 2a48(~<_
.data _3yG<'f[Y
szCaption db 'A MessageBox!',0 Z9+fTT
szText db 'Hello,world!',0 H4AT>}ri
;代码段 ?`rAO#1
.code VDbbA\
start: `>)Ge](oN
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK R=LiB+p
invoke ExitProcess,NULL ChG7>4:\
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> jd-]q2fQ|
end start -LszaMR}
8mKp PwG0
%}VH5s9\
AWK D4[t^G;J
BEGIN { print "Hello, world!" } z77>W}d
}0Ns&6 )xG
,Q7;(&x~
BASIC ?V^7`3F
传统版BASIC(例如GWBASIC): >!xyA;
/0XMQy
10 PRINT "Hello, world!" mA+:)?e5~
20 END ()l3X.t,$
~BmA!BZV`
或在提示符输入: Q}L?o
yW=+6@A4
?"Hello, world!":END hyf
;f7`o
%NxQb'
现代版BASIC(例如Quick BASIC): \>-
M&C
KRC"3Qt
Print "Hello, world!" oIj=ba(n1
Nb`qM]&
以下的语句在Quick BASIC中同样有效: (;},~( 2B
`z0q:ME
? "Hello,world!" /GC&@y0yi
8$
u"92
h7UNmwj
BCPL N8dxgh!,
GET "LIBHDR" ?l^Xauk4Pj
Pp tuXq%U
LET START () BE Jq'8"
$( 6D`n^ uoP
WRITES ("Hello, world!*N") nOL"6%q
$) =,#--1R7g
d/&>
`[i
UgC65O2
Befunge \}?X5X>
"!dlrow olleH">v w&aZ 97{
,
8'8`xu$
^_@ wc4BSJa,19
]2wxqglh)
Lr$Mk#'B
Brainfuck {4G/HW28
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
K%? g6j
+++++++++++++++.>.+++.------.--------.>+.>. jfY7ich
Ey|_e3Lf[
r@{TN6U
C 2+
cs^M3
#include <stdio.h> Szgo@x$^
wwB3m&
int main(void) Q,&Li+u|
{ MxIa,M<
printf("Hello, world!\n"); -{xk&EB^$5
return 0; Nhjq.&
} "+ou!YK+
<ukBAux,D
0- )K_JV
C++ E=p+z"Ui
#include <iostream> Y"GNJtsL "
%'=*utOxy
int main() zXn-E
{ o3 fc -
std::cout << "Hello, world!" << std::endl; "s(~k
return 0; :pqUUZ6x&
} KkA)p/
lb-1z]YwQ
l?U=s7s0?
C++/CLI bx8](cT_
int main() 4VwF\
{ m0"K^p
System::Console::WriteLine("Hello, world!"); FQDf?d5
} o eUi
kt/,& oKI
20;9XJmjl
C# (C Sharp) `r`8N6NQ&]
class HelloWorldApp :}lqu24K
{ X g6ezlW
public static void Main() $')C&
{ y2G Us&09
System.Console.WriteLine("Hello, world!"); vjuFVJwL
} Xo34~V@(
} |`5IP8Z
]dpL
PR
vwU1}H
COBOL >.iF,[.[F<
IDENTIFICATION DIVISION. 'u7-Qetj
PROGRAM-ID. HELLO-WORLD. gsk?
!D
bO=|utpk
ENVIRONMENT DIVISION. h+FM?ct6}
&0F' Ca
DATA DIVISION. )D,KG_7l
6l]X{ A.
PROCEDURE DIVISION. A9$x8x*Lt
DISPLAY "Hello, world!". 2*|T)OA`m,
STOP RUN. k {*QU(
+WH\,E
&]nx^C8V;
Common Lisp _v,0"_"
(format t "Hello world!~%") h Jb2y`,q
z%82Vt!a5
.,bpFcQ
DOS批处理 i}) s4%a
@echo off 5?kfE
echo "Hello, world!" ?h= n5}Y
{>f"&I<xw
1@F-t94I
Eiffel ju"z
class HELLO_WORLD uzy5rA==
9P?0D
creation pM?;QG;jA
make ~dYCY_a
feature w&p+mJL.
make is Y2u\~.;oq
local CL=%eSsuD
io:BASIC_IO bn(N8MFCV
do [n2B6Px
!!io m8q4t,<J
io.put_string("%N Hello, world!") va6Fp2n<1*
end -- make B>,eHXW
end -- class HELLO_WORLD EuK}L[Kl
b3ohTmy4(
_%w680b'
Erlang j9p6rD
-module(hello). i9;
-export([hello_world/0]). x[(6V'
x'GB#svi
hello_world() -> io:fwrite("Hello, World!\n"). !+GYu;_
yqT !A
j/ 5
Forth +V3mF_s|z
." Hello, world!" CR )^>LnQ_u
[jMN*p?
hsC T:1i
Fortran (Xd8'-G$m
WRITE(*,10) |N.2iN:
10 FORMAT('Hello, World!') m=dNJF
STOP 2}hJe+#v
END A3jxjQ
Pe`(9&iT.
C8U3+ s
HTML T+kV~ w{
<HTML> fkA+:j~z_
<HEAD> mq`/nAmt
<TITLE> Hello World! </TITLE> 6_CP?X+T
</HEAD> 1[%3kY-h
<BODY> ?:(y
<p>Hello World!</p> =8AT[.Hh
</BODY> &@0~]\,D7
</HTML> n5:uG'L\
)l3Uf&v^f
<!OBpAq
HQ9+ a3@E`Z
H $R9D
L^iD
gjS|3ED
'!HTE`Aj
INTERCAL Ds9)e&yYrb
PLEASE DO ,1 <- #13 K"#$",}=
DO ,1 SUB #1 <- #238 #@R0$x
DO ,1 SUB #2 <- #112 B
`(jTL
DO ,1 SUB #3 <- #112 Q+:y
DO ,1 SUB #4 <- #0 ]; w 2YR
DO ,1 SUB #5 <- #64 Rs %`6et}\
DO ,1 SUB #6 <- #238 LgqQr6y"
DO ,1 SUB #7 <- #26 hlzB
cz*
DO ,1 SUB #8 <- #248 ]3KeAJ
DO ,1 SUB #9 <- #168 }A)\bffH
DO ,1 SUB #10 <- #24 3BFOZV+
DO ,1 SUB #11 <- #16 9/ <3mF@E
DO ,1 SUB #12 <- #158 h0{X$&:
DO ,1 SUB #13 <- #52 dSM\:/t
PLEASE READ OUT ,1 F.9}jd{
PLEASE GIVE UP hZ&KE78?
@@65t'3S
+7_qg
i7:
Java broLC5hbQU
public class Hello rB>ge]$.
{ >!963>D R
public static void main(String[] args) &> sbsx\y
{ @X==[gQ
System.out.println("Hello, world!"); q+ax]=w
} :U6`n
} /bo}I-<2
Z)?$ZI@
YQBLbtn6(
JSP V6]6KP#D
<% 6(n0{A
out.print("Hello, world!"); cgnNO&
%> {}O~tf_
R9J!}az'
ZpTDM1ro
MIXAL #Hw|P
TERM EQU 19 the MIX console device number ?CpVA
ORIG 1000 start address YT\`R
START OUT MSG(TERM) output data at address MSG ;%e&6
HLT halt execution =[B\50]
MSG ALF "MIXAL" I/E 9:
ALF " HELL" 7^L
ALF "O WOR" ).~
"
ALF "LD " Kk3+ ]W<
END START end of the program 2+1ybOwb
V9c.(QY|f
Myq8`/_
Nuva DT-VxF6 h
<..直接输出..> `TrWtSwv
Hello, world! 9LR=>@Z
K-RmB4WI
<..或者..> Et=Pr+Q{c
JZ5k3#@e
<. X9x`i
// 不带换行 W06aj ~7Z
? "Hello, world!" D,#UJPyg
H$![]Ujq
// 或者 WAu>p3
NxP(&M(
// 带换行 &:&'70Ya
?? 'Hello, world!' *z0!=>(
.> }(EH5jZ'
e3I""D{)[=
epy2}TI
OCaml DiFLat]X
let main () = 9+ 'i(q
z
print_endline "Hello world!";; Lqgrt]L_"
-TUJ"ep]QJ
6VW*8~~Xy
Pascal uibmQ|AQ
program Hello; XKp&GE@Y
begin MAh1tYs4D
writeln('Hello, world!'); I)rnF
end. K_i|cYGV
a5*r1,
AuNUW0/
7
Perl 4fLRl-)
#!/usr/local/bin/perl u`MMK4 %
print "Hello, world!\n"; hD6BP
pH'_k k
^<I(
PHP fO<40!%9cQ
<?php gOF^?M11x
print("Hello, world!"); p9v:T1?
?> +nYFLe
d$!Q6ux;
0 R6:3fV6R
Pike ?sN{U\
#!/usr/local/bin/pike DDE-$)lf>
int main() 4 m:h&^`N
{ Be6Yh~m
write("Hello, world!\n"); rT2Njy1
return 0; gInh+XZs
} *EWWN?d
mixsJ}e
JP#S/kJ%3
PL/I *X0>Ru[
Test: procedure options(main); | {9<%Ok4P
declare My_String char(20) varying initialize('Hello, world!'); abo=v<mR
put skip list(My_String); .}IW!$
dq
end Test; !XPjRd q
W[2]$TwT
aODh5
Prolog pz%s_g'
goal 7l *
&Fh9;
write("hello,world!"). TgiZ
% G
#U:|-
a.>
X^\D"fmE.
Python P6+ B!pY
#!/usr/local/bin/python VLuHuih
print "Hello, world!" erH,EE^-x<
)/RG-L
4'QX1p
REXX q
G%Y & P
say "Hello, world!" x|O7}oj
U5Hi9fe
]]j^
Ruby OBi(]l}^O
#!/usr/bin/ruby YR?Y:?(
print "Hello, world!\n" T$;S
g=Z52y`N<
25>R^2,LiE
Scheme * %D_\0;
(display "Hello, world!") %"WENa/t
(newline) ifDWN*k6
'=dQ$fs
h;V4|jM
sed (需要至少一行输入) 7FC!^)x1
sed -ne '1s/.*/Hello, world!/p' ,Lig6Z`
ddQ+EY@!
k]m ~DVS
Smalltalk P$EiD+5#z
Transcript show: 'Hello, world!' L
FWp}#%
lV\iYX2#
~$J;yo~
SNOBOL yqN`R\d
OUTPUT = "Hello, world!" c
p"K ?)
END w;'XqpP$*|
~?\U];l
9$)&b\D
SQL JL M Xkcc
create table MESSAGE (TEXT char(15)); =gVMt
insert into MESSAGE (TEXT) values ('Hello, world!'); jQ{ @ol}n
select TEXT from MESSAGE; BUXE
s0]Lv
drop table MESSAGE; q T6y&
"OLg2O^
?+zFa2J
Tcl &5W;E+Pub
#!/usr/local/bin/tcl T}fo
puts "Hello, world!" 3x~7N
P~a@{n*8
Q(& @ra!{
TScript Ark]>4x>
? "Hello, world!" T5:Q_o]
lHM+<Z
p/Pus;*s
Turing x Lan1V
put "Hello, world!" ]0UYxv%]
$@PruY3[
;\K]~
UNIX-style shell $;^|]/-
程序中的/bin/sh可改为您使用的shell WARiw[
mG[jR*JW
#!/bin/sh 6 byeO&d
echo 'Hello, world!' i-|N6J
7yE\,
[*
<x)
GUI VeQGdyhY
\5a.JfF
Delphi UFj H8jSBx
program HelloWorld; )Rn\6ka
uses gX"-3w
Dialogs; \c2x
udU
begin #D9.A7fCc5
ShowMessage('Hello, World!'); \,13mB6
end. '8 .JnCg
2Mx\D
k[f2`o=
Nuva f&<+45JI
<. "^&H9