“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。 ONx|c'0g
p(2j7W-/
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》。 7 V/yU5
.aRL'1xHl
以下是用不同语言写成的Hello World程序的几个例子: 'WqSHb7
Ada ,gU%%>-_~w
with Ada.Text_Io; use Ada.Text_Io; >.R6\>N%
procedure Hello is ?nm:e.S+?
begin ;bt@wgY
Put_Line ("Hello, world!"); FV[6">;g
end Hello; wf7<#jIq
+MQvq\%tG
-25#Vh
汇编语言 DdI7%?hK
~"l
a2
x86 CPU,DOS,TASM //--r5Q
MODEL SMALL Z$R2Z$f
IDEAL D\Y)E#%,
STACK 100H FNZB M
I3Sl>e(Z
DATASEG ?KxI|os
HW DB 'Hello, world!$' 0XlX7Sk+
lY}mrb
CODESEG 7YRDQjg
MOV AX, @data c ;3bX6RD*
MOV DS, AX O$
i6r]j_
MOV DX, OFFSET HW dRZor gar
MOV AH, 09H m[^;HwJ
INT 21H $ql-"BB
MOV AX, 4C00H JxQwxey{
INT 21H AK<ZP?0
END l,/q#)5[
oWyg/{M
C#r_qn
x86 CPU,GNU/Linux,NASM TJY$<:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). gb:Cc,F,%
;Enter this into "hello.asm" then type: xsRMF&8L
;"nasm -f elf hello.asm" (2@b ,w^
;"ld hello.o -o hello" m@JU).NKCS
;"./hello" mxHNK4/
)EO/P+&
section .data ;data section declaration <YL\E v/[
msg db 'Hello World!',0AH 'D(Hqdr;:
len equ $-msg ;string length ,|I\{J #C
lGB7(
section .text ;code section declaration nGW
wXySq
global _start ;entry point (start of execution) M;MD-|U
_start: mov edx,len ;string length {(wV>Oc>Jw
mov ecx,msg ;string start `Uk,5F5
mov ebx,1 ;file handle: stdout va8:QHdU
mov eax,4 ;sys_write 9r1pdG_C@
int 80h ;kernel system call BHj]w*Ov
(XqeX(s
mov ebx,0 ;return value 3|:uIoR{
mov eax,1 ;sys_exit ECkfFE`
int 80h ;kernel system call tzpGKhrk6
B_cn[?M
0'97af
x86 CPU,Windows,MASM32 cDs#5,
.386
8KWTd
.model flat,stdcall XQ(`8Jl&^
option casemap:none >^J!Z~;L)
;Include 文件定义 3"[ KXzn
include windows.inc n^Z?u9VR
include user32.inc bf;IJ|v^
includelib user32.lib >4EcV1y
include kernel32.inc YSrFHVq
includelib kernel32.lib p'w[5'
;数据段 UjKHGsDi4
.data Zl,K#
szCaption db 'A MessageBox!',0 N=I5MQG
szText db 'Hello,world!',0 X_!mZ\H7
;代码段 I:6xDDpZG`
.code 2:DpnLU5
start: wFqz.HoB
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 3b&W=1J
invoke ExitProcess,NULL -nk %He
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Y6N+,FAk+J
end start 0>e>G (4(8
},Z-w_H
p`d:g
BZ
AWK vY;Lc
BEGIN { print "Hello, world!" } +mxYz#reX
t#pY2!/T3
^cAJCbp7
BASIC moo>~F _^
传统版BASIC(例如GWBASIC): +?@qux!
8c/Ii"1
10 PRINT "Hello, world!" 6nq.~f2`
20 END \U-5&,fP
1b!l+ 8!
或在提示符输入: r2Z`4tN:
^X;>?_Bk
?"Hello, world!":END x)U;
<1LuYEDq
现代版BASIC(例如Quick BASIC): oaXD^H\
k m|wB4
Print "Hello, world!" kt:%]ZZL
T
a[74;VO
以下的语句在Quick BASIC中同样有效: ;yXnPAtJ
bG&qgbN>
? "Hello,world!" {vH8X(m
vVf!XZF
?-Z:N`YP
BCPL R"=M5
GET "LIBHDR" YOoP]0'L
#3$|PM7,_
LET START () BE gjWH
}(K
$( S\rfR N
WRITES ("Hello, world!*N") t8+93,*B
$) x}[` -
)K6{_~Kc\
)gLasR.1
Befunge M*HG4(n0
"!dlrow olleH">v &ivIv[LV
, \*
#4
^_@ e+WVN5"ID>
]mh+4k?b
7(;VUR%%.
Brainfuck ZSSgc0u^?
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< LN^8U
+++++++++++++++.>.+++.------.--------.>+.>. !R@4tSu
Ye6O!,R
Oe!&Jma*>
C =R"tnjR
#include <stdio.h> 5b'S~Qj#r$
c%!wKoD
int main(void) BSf"'0I&
{ . gJKr
printf("Hello, world!\n"); l :"*]m7o_
return 0; n58jB:XR(
}
}+J@;:
{;/o4[jlg
g-}sVvM
C++ 6hq)yUvo4
#include <iostream> J5T#}!f
J;`~
!g
int main() zJ`(LnV
{ F! e`i-xt
std::cout << "Hello, world!" << std::endl;
3lN+fQ>)S
return 0; ]IV;>94[
} xn8B|axB
*% *^a\2
r|@?v ,
C++/CLI zY+Et.lg]^
int main() }C1wfZ~F~
{ #^ #i]{g
System::Console::WriteLine("Hello, world!"); I>#ChV)(#
} ={'($t%|T
BkfBFUDQ
qS|VUy4
C# (C Sharp) 9A(K_d-!H
class HelloWorldApp auW]rwY
{ JrTBe73.]j
public static void Main() T}[vfIJD
{ ""^BW Re D
System.Console.WriteLine("Hello, world!"); {B.]w9
} m!g8@YI
} Uc0'XPo3I
VAE?={-
EIQy?ig86
COBOL @F^L4 N':
IDENTIFICATION DIVISION. gDNW~?/
PROGRAM-ID. HELLO-WORLD. `kSCH; mwP
@|Bp'`j%J
ENVIRONMENT DIVISION. zEfD{I
b.*4RL
DATA DIVISION. |7x^@i9w
"Cj#bUw
PROCEDURE DIVISION. 2z# @:Q
DISPLAY "Hello, world!". *+4iBpyiB
STOP RUN. Bqlc+d:
l:yAgm`
!!%nl_I(
Common Lisp $ow`)?sh
(format t "Hello world!~%") G3^]Wwu
t~K!["g
R6mJFE*6T9
DOS批处理 , %O3^7i
@echo off uN3J)@;_
echo "Hello, world!" _hL4@C
@~G`~8
QfWu~[
Eiffel [<a%\:c m4
class HELLO_WORLD Sc3M#qm_
-f|^}j?
creation psy(]Pf
make "gajBY
feature ~<[5uZIo
make is g4SYG)'R+
local i=H>D
io:BASIC_IO LEnP"o9ZW
do y"L`bl A9}
!!io Rn_W|"
io.put_string("%N Hello, world!") ,bp pM
end -- make ^_h7!=W
end -- class HELLO_WORLD JgKZ;GM:W
JK]tcP
xp8f
Erlang "M0l;
-module(hello). SJc@iffS
-export([hello_world/0]). lrX0c$)
@&xaaqQ-
hello_world() -> io:fwrite("Hello, World!\n"). v[DbhIXU
z<vO#
>AX~c
jo
Forth =*:_swd
." Hello, world!" CR RHl=$Hm.%
_AB9BQm
"~2#!bK7
Fortran I&fh
WRITE(*,10) ^C)T M@+
10 FORMAT('Hello, World!') <6O_t,K]
STOP aGk%I
END $#ju?B~
xm,`4WdG
VMye5 P
HTML z vb}p
<HTML> jM1%6
<HEAD> M$4=q((0
<TITLE> Hello World! </TITLE> 5-WRv;
</HEAD> [+MX$y
<BODY> oTD-+MZn
<p>Hello World!</p> $n#Bi.A
j
</BODY> t-7U1B}=<C
</HTML> q&Tn>B
=i^<a7M~
vG<pc_ak
HQ9+ <k\H`P
H oS#'u1k
hUT^V(
r -q3+c^+
INTERCAL ;64mf`
PLEASE DO ,1 <- #13 T<f\*1~^
DO ,1 SUB #1 <- #238 !H1tBg]5
DO ,1 SUB #2 <- #112 8hK P
DO ,1 SUB #3 <- #112 Gkv~e?Kc~^
DO ,1 SUB #4 <- #0 << ;HY}s
DO ,1 SUB #5 <- #64 EwD3d0udL
DO ,1 SUB #6 <- #238 w &|R5Q
DO ,1 SUB #7 <- #26 ]KXMGH_
DO ,1 SUB #8 <- #248 phgexAq
DO ,1 SUB #9 <- #168 QOV}5 0
DO ,1 SUB #10 <- #24 h^A3 0f_x
DO ,1 SUB #11 <- #16 a%T -Z.rd
DO ,1 SUB #12 <- #158 {;&B^uz
]
DO ,1 SUB #13 <- #52 k]Alp;hVd
PLEASE READ OUT ,1 ;;?vgrz
PLEASE GIVE UP hr[B^?6
&