“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\k# >}}
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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》。 ;u)I\3`*!
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以下是用不同语言写成的Hello World程序的几个例子: [` 7ThHX
Ada 20Wg=p9L
with Ada.Text_Io; use Ada.Text_Io; sd|).;s}
procedure Hello is 1p=]hC
begin qY!Zt_Be6
Put_Line ("Hello, world!"); HN|%9{VeB
end Hello; &
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_.8S&
#AQV(;r7@
汇编语言 /IMFO:c
0n{=%Q
x86 CPU,DOS,TASM h~zT ydnH
MODEL SMALL Ig>(m49d
IDEAL Er?&Y,o
STACK 100H %1+4_g9
(SAs-
DATASEG Rnq7LGy
HW DB 'Hello, world!$' )+9Uoe~6
$~T4hv :
CODESEG <wD-qT W
MOV AX, @data
[/8%3
MOV DS, AX S 30%)<W
MOV DX, OFFSET HW 0<@@?G
MOV AH, 09H u]UOSf n
INT 21H 'TB2:W3
MOV AX, 4C00H _X
x/(.O
INT 21H \,0oX!<YY
END `VguQl_,gA
1bwOmhkS
K]w'&Qm8W
x86 CPU,GNU/Linux,NASM fe_5LC"
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ;;/{xvQ.1
;Enter this into "hello.asm" then type: ]:J$w]\
;"nasm -f elf hello.asm" 4^o^F-k'
;"ld hello.o -o hello" @cXMG6:{
;"./hello" `'7R,
63IM]J
section .data ;data section declaration a9Zq{Ysj
msg db 'Hello World!',0AH FfT`;j
len equ $-msg ;string length .8JTe0
88$8d>-
section .text ;code section declaration f]srRYSR
global _start ;entry point (start of execution) Uw<nxD/+
_start: mov edx,len ;string length _6vWF
mov ecx,msg ;string start dG ?*y
mov ebx,1 ;file handle: stdout ]3Sp W{=^(
mov eax,4 ;sys_write 7WzxA=*#
int 80h ;kernel system call )zDCu`
/Lr.e%
mov ebx,0 ;return value +9sQZB# (
mov eax,1 ;sys_exit [j+sC*
int 80h ;kernel system call >Cq<@$I2EB
mj7#&r,1l
G$('-3@i`w
x86 CPU,Windows,MASM32 PXNuL&
.386 c'\dFb9a
.model flat,stdcall gL/9/b4
option casemap:none `C'H.g\>2Q
;Include 文件定义 U-k`s[dv
include windows.inc vKAN@HSYr
include user32.inc K_}K@'
includelib user32.lib >Y@H4LF;1x
include kernel32.inc M x"\5i
includelib kernel32.lib 2&J)dtqz
;数据段 5146kp|1
.data mgU<htMr1
szCaption db 'A MessageBox!',0 5L}/&^E#p
szText db 'Hello,world!',0 W=+ Y|R!
;代码段 m+z&Q
.code @d1Q"9}B
start: +k R4E23:
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK qwAT>4
invoke ExitProcess,NULL &m;*<}X
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Bdpy:'fJn
end start 42ge3>
,64-1!
w7&A0M
AWK k$:|-_(w
BEGIN { print "Hello, world!" } C\hM =%
i SQu#p@
B&"Q\'c
BASIC <(#ej4ar,
传统版BASIC(例如GWBASIC): _
jlRlt
P@~yx#G
10 PRINT "Hello, world!" 7tCw*t$
20 END 2y1Sne=<Kb
SUK?z!f<i
或在提示符输入: lPAQ3t!,
SSzIih@u
?"Hello, world!":END ,|/f`Pl
X2'0PXv>!
现代版BASIC(例如Quick BASIC): &mM0AA'\?H
ti,d&c_7
Print "Hello, world!" Q\0'lQJdy
E' uZA
以下的语句在Quick BASIC中同样有效: */S_Icf
[{/jI\?v
? "Hello,world!" #,'kXj
lH~[f
*lJxH8 \
BCPL J]r^W)O
GET "LIBHDR" bpa?C
<(! :$
LET START () BE &5!8F(7
$( ZS o)
WRITES ("Hello, world!*N") e]$s
t?
$) -$Ih@2"6
2MK-5Kg
dlnX_+((KC
Befunge b|(:[nB
"!dlrow olleH">v Y}KNKO;
, &BSn?
^_@ iH'p>s5L
hgE71H\s
akTk(
Brainfuck 1k^oS$UT
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ?Q;=v~-Q
+++++++++++++++.>.+++.------.--------.>+.>. 2st3
x.4m|f0;
:Llb< MY2
C 3PF_H$`oJ
#include <stdio.h> V|R,!UND
(^>J&[=
int main(void) B`sAk
%
{ -D:b*D
printf("Hello, world!\n"); 1{.9uw"2S
return 0; X5w$4Kj&4l
} :rP=t ,
asqV~n
b\5F ]r
C++ !bP@n
#include <iostream> 3$
PV2"
TkF[x%o
int main() l%=;
{ >@Kx>cg+
std::cout << "Hello, world!" << std::endl; -tU'yKhn
return 0; ?&uu[y
} /zox$p$?h
`
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{2gwk8
C++/CLI ,/U6[P_C5
int main() dD@(z:5M\
{ J9 I:Q<;
System::Console::WriteLine("Hello, world!"); *=xr-!MEk
} _','9|
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hCo|HB
C# (C Sharp) FC4wwzb
class HelloWorldApp f,Ghb~y
{ !TcJ)0
public static void Main() &,)&%Sg[
{ A/?7w
System.Console.WriteLine("Hello, world!"); c4z R*
} 7PF%76TO
} 51.%;aY~z
fd9k?,zM
J,6yYIq
COBOL HOJV,9v N
IDENTIFICATION DIVISION. :MDKC /mC
PROGRAM-ID. HELLO-WORLD. @KUWxFak
/<BI46B\
ENVIRONMENT DIVISION. *n"{J(Jt`
A_UjC`
DATA DIVISION. o<!?7g{
LXCx~;{\
PROCEDURE DIVISION. -DAlRz#d,
DISPLAY "Hello, world!". 3= ;<$+I6
STOP RUN. XB5DPx
x$(f7?s] 1
q" 5(H5
Common Lisp #)VF3T@#'
(format t "Hello world!~%") a-J.B.A$Z/
Yz93'HDB
-D~%|).'
DOS批处理 |vzl. ^"-
@echo off K~EmD9
echo "Hello, world!" lk80#( :Z
e@YK@?^#N
r,2g^K)6
Eiffel rQ snhv
class HELLO_WORLD An/|+r\
>c}u>]D
creation '/%H3A#L
make H" 7u7l
feature k~z Iy;AZ
make is g#E-pdY
local pI<f) r
io:BASIC_IO l}M!8:UzU
do 1yY0dOoLG)
!!io S`Rs82>
io.put_string("%N Hello, world!") [=`q>|;pOv
end -- make hK|Ul]qI
end -- class HELLO_WORLD 8Xs8A.
}W,[/)MO
oe~b}:
Erlang +x}<IS8
-module(hello). 8*a&Jl
-export([hello_world/0]). "tpSg
P{^6v=8)
hello_world() -> io:fwrite("Hello, World!\n"). Eu04e N
~4cC/"q$X
kB%JNMF{A
Forth K!l5coM
." Hello, world!" CR )@bQu~Y
,~W|]/b<q
%D "I
Fortran mpJ#:}n
WRITE(*,10) u\nh[1)a)
10 FORMAT('Hello, World!') hP&Bt
STOP @7n"yp*"
END IIx#2r
SByW[JE
[}]Q?*_
HTML @Do= k
<HTML> ~W]TD@w
<HEAD> K",N!koj
<TITLE> Hello World! </TITLE> .#pU=v#/[
</HEAD> `*KHSA
<BODY> jo@J}`\Zt
<p>Hello World!</p> R{T$[$6S
</BODY> $iz|\m
</HTML> <c/5b]No
!%0 *z
6)Lk-D
HQ9+ #>+ HlT
H Q]>.b%s[
VP]% Hni]
HyWCMK6b
INTERCAL u;c?d!E
PLEASE DO ,1 <- #13 -3Vx76Y
DO ,1 SUB #1 <- #238 wD)XjX
DO ,1 SUB #2 <- #112 n.0fVV-A
DO ,1 SUB #3 <- #112 L;I]OC^J
DO ,1 SUB #4 <- #0 4r}8lpF_(
DO ,1 SUB #5 <- #64 0"bcdG<}
DO ,1 SUB #6 <- #238 LFtt gY
DO ,1 SUB #7 <- #26 `W*U4?M
DO ,1 SUB #8 <- #248 [hj6N*4y
DO ,1 SUB #9 <- #168 _a T5jR=
DO ,1 SUB #10 <- #24 y
h9*z3
DO ,1 SUB #11 <- #16 CizX<Cr}
DO ,1 SUB #12 <- #158 N<injx
DO ,1 SUB #13 <- #52 ) hfpwdQ
PLEASE READ OUT ,1 .0]<k,JZZ
PLEASE GIVE UP Npy:!
65Yv4pNL
,nDaqQ-C!!
Java ZExlGC
public class Hello r\V
={p
{ @6T/Tdz
public static void main(String[] args) JnM["Q=`
{ hx]?&zT@
System.out.println("Hello, world!"); }Kbb4]t|"
} [K0(RDV)%
} v,>Dbxn
,1o FPa{?
o:Sa,
!DK
JSP
}?Ai87-{
<% Dwfu.ZJa
out.print("Hello, world!"); 'AS|ZRr/
%> :E )>\&
RdRp.pb8
7! INkH]
MIXAL n8ZZ#}Nhg
TERM EQU 19 the MIX console device number zue~ce73J
ORIG 1000 start address L>4"(
START OUT MSG(TERM) output data at address MSG 'kO!^6=4M
HLT halt execution 5uj?#)N
MSG ALF "MIXAL" cB}D^O
ALF " HELL" t=W}SH
ALF "O WOR" JO6)-U$7UG
ALF "LD " +*/Zu`kzX
END START end of the program 0[?Xxk}s0
pYmk1!]/
>V8-i`
Nuva jkF^-Up.
<..直接输出..> |[aiJR[Q
Hello, world! 3K0A)W/YEs
CU2*z(]&
<..或者..> Gm^U;u}=f
3eAX.z`D
<. EDl!w:
// 不带换行 eiaFaYe\
? "Hello, world!" rlSeu5X6
L2i_X@/
// 或者 w;:*P
B7E:{9l~s{
// 带换行 j@3Q;F0ba
?? 'Hello, world!' ShP^A"Do
.> czgO ;3-C
aP@N)"
2*l/3VW
OCaml T<Z &kYU:R
let main () = W/bQd)Jvk
print_endline "Hello world!";; nRZ]z( b
,77d(bR<
u?<%q!
Pascal (Y? gn)*t
program Hello; <7Or{:Sc90
begin `V)8
QRN(
writeln('Hello, world!'); x,@B(9No
end. Ma']?Rb`
$$;M^WV^?.
-4IE]'##
Perl +YKi,
#!/usr/local/bin/perl .*S#aq4S
print "Hello, world!\n"; !v_|zoCEj
}Gm>`cw-
/1V xc 6
PHP J~zUp(>K
<?php ;dtA4:IRZ4
print("Hello, world!"); gpvYb7Of0
?> r|fL&dtr
7yH"l9Z
%G/hD
Pike .* ?wF
#!/usr/local/bin/pike RYQR(v
int main() uLL]A>vR
{ Fg5kX
write("Hello, world!\n"); =_ ./~
return 0; 2Aazy'/
} c"n\cNP<
FaQe_;
2~1SQ.Q<RY
PL/I y^,1a[U.
Test: procedure options(main); t?x<g <PJ4
declare My_String char(20) varying initialize('Hello, world!'); F|o:W75
put skip list(My_String); G%AbC"
end Test; L_uVL#To
~ Ei $nV
Jr
,;>
Prolog "$Z= %.3Q
goal Ic"ybj`
write("hello,world!"). Ustv{:7v
,.83m%i
hk(ZM#Bh
Python @fZ,.2ar
#!/usr/local/bin/python ~q@|l3?$
print "Hello, world!" 7a=gH2]&
+j`5F3@
szZr4y<8|1
REXX H1pO!>M
say "Hello, world!" _(W+S`7Z
TluW-S
*v
jmy/3
Ruby <ktrPlNuM
#!/usr/bin/ruby |"X*@s\'
print "Hello, world!\n" ]_mb7X>
W7R<