“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。 F1@Po1VTD
5;0w({1l
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》。 k9rws
HD=F2p
以下是用不同语言写成的Hello World程序的几个例子: +zMPkbP6
Ada #! R>`l(S
with Ada.Text_Io; use Ada.Text_Io; =Z:]%
procedure Hello is Mc@9ivwL#
begin JfN5#+_i
Put_Line ("Hello, world!"); !t23
_b0
end Hello; ,]2?S5R
x'`{#bKD
gE2(E0H
汇编语言 cWkg.ri-x
1WMZ$vsQUb
x86 CPU,DOS,TASM jDY
B*Y^F
MODEL SMALL Ol }5ry
IDEAL -`k>(\Q<d
STACK 100H 9BtGzI\
b}R_@_<u
DATASEG 8{G!OBxc\.
HW DB 'Hello, world!$' N ^rpPq
kzRvLs4xM
CODESEG 4@-tT;$
MOV AX, @data _Rii19k
MOV DS, AX k-|g
MOV DX, OFFSET HW OOSf<I*>
MOV AH, 09H 7y|U!r"Y
INT 21H D j9aTO
MOV AX, 4C00H 7@;*e=v
INT 21H 3k)xzv%r`
END =IMmtOvJ
_h-agn4[i
3<r7"/5
x86 CPU,GNU/Linux,NASM ,IPt4EH$
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). A`3KE9ED
;Enter this into "hello.asm" then type: '0+I' _(
;"nasm -f elf hello.asm" ZwMVFC-d
;"ld hello.o -o hello" d*^JO4'
;"./hello" !
*sXLlS
':4<[Vk
section .data ;data section declaration >j=ZB3yZ
msg db 'Hello World!',0AH $#hU_vr
len equ $-msg ;string length E'f7=ChNF
&gXL{cK'%
section .text ;code section declaration %1A8m-u]M
global _start ;entry point (start of execution) 89&9VX^A
_start: mov edx,len ;string length C|&tdh :g
mov ecx,msg ;string start 2X2Ax~d@
mov ebx,1 ;file handle: stdout F|F0#HC ?
mov eax,4 ;sys_write yQrgOdo,w
int 80h ;kernel system call <
c^'$
2.Vrh@FNRo
mov ebx,0 ;return value bPOPoq1#
mov eax,1 ;sys_exit e#;43=/Ia
int 80h ;kernel system call "rn
Z3TCi7,m
?_gvI
x86 CPU,Windows,MASM32 nnPT08$
.386 b/UXO$_~-
.model flat,stdcall 6-wpR
option casemap:none "^$Ht`p[
;Include 文件定义 $l7}e=1
include windows.inc 5_!L"sJ
include user32.inc #a}w&O";
includelib user32.lib H>/,Re
include kernel32.inc ompr})c
includelib kernel32.lib 7I[[S!((s
;数据段 aE 07#
.data jI8`trD
szCaption db 'A MessageBox!',0 @:zC!dR)G
szText db 'Hello,world!',0 s1_Y~<yX
;代码段 $JOz7j(
.code ,5c7jZ5H
start: ZvF#J_%gE5
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK .@&FJYkLYi
invoke ExitProcess,NULL Wmd@%K
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> nr]=O`Mvh
end start %_E5B6xi{
66?`7j X
%_Vz0
D!7
AWK HAO-|=c4
BEGIN { print "Hello, world!" } (>0`e8v!
KcV"<9rE
z#Jw?K_
BASIC l5w^rj
传统版BASIC(例如GWBASIC): tQzbYzGb7
@M\JzV4 A[
10 PRINT "Hello, world!" C,W@C
20 END c:K/0zY
zdJPMNHg
或在提示符输入: DL,R~
$HQ~I?r{Hf
?"Hello, world!":END bnfeZR1m_
: _Y^o
现代版BASIC(例如Quick BASIC): \xS X'/G
h:pgN,W}
Print "Hello, world!" PNAvT$0LaZ
rmw}Ui"
以下的语句在Quick BASIC中同样有效: 2Di~}* 9&
bsu?Q'q
? "Hello,world!" e Fs5l
|5;,]lbt
Kc]cJ`P4.
BCPL mdL T7
GET "LIBHDR" ? /!Fv/
dwB#k$VIOw
LET START () BE "#wAGlH6>
$( ',hoe
WRITES ("Hello, world!*N") ?3N/#
$) ]rGd!"q
+jrx;xwot
:gRrM)n
Befunge 2f:h z
"!dlrow olleH">v D?E
VzG
, pu MVvo
^_@ G--vwvL
e[x,@P`
%GjG.11V,_
Brainfuck Aa1#Ew<r
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 9Y2u/|!.3
+++++++++++++++.>.+++.------.--------.>+.>. ;
]%fFcy
9*iVv)jd
1N _"Mm{
C
[uqr
#include <stdio.h> Q']'KU.
E7h@c>IK
int main(void) 7V=deYt_p
{ tz65Tn_M
printf("Hello, world!\n"); #p=+RTZ<
return 0; %+/v")8+?
} {!(
htg;
WClprSl8
dh]Hf,OLF
C++ <8%+-[(
#include <iostream> vH6(p(l
>7a
ENKOg:
int main() fPN/Mxu
{ r|Uz?
std::cout << "Hello, world!" << std::endl; J-=fy^S5
return 0; :D}?H@(69
} mK M[[l&A
b^i$2$9_
2FL_!;p;2E
C++/CLI TS=%iMa
int main() zk70D_}L
{ vyc<RjS_x
System::Console::WriteLine("Hello, world!"); d<?Zaehe\
} :OU(fz]
T:Q+ Z }v+
"nJMS6HJ[
C# (C Sharp) uR")@Tc
class HelloWorldApp sfG9R"
{ LU*mR{B
public static void Main() vIi&D;
{ QN;NuDHN
System.Console.WriteLine("Hello, world!"); &VjPdu57
} U#Kw+slM
} 0* ^f
EoV
:;#^gvH
*>iJ=H
COBOL M2:3k
IDENTIFICATION DIVISION. l+(B~v
PROGRAM-ID. HELLO-WORLD. 4cm~oZ
:'t"kS
ENVIRONMENT DIVISION. \py&v5J)s!
qYqd -R
DATA DIVISION. 9%k4Ic%P
!
,]Fx
PROCEDURE DIVISION. Qmd2C&Xw
DISPLAY "Hello, world!". +CEt:KQ
STOP RUN. #I ,c'Vj
brE%/%!e
/ORK9g
Common Lisp KPK`C0mg@k
(format t "Hello world!~%") ,iiI5FR
RionKiN
4wS!g10 }
DOS批处理 '6WZi|(a
@echo off <1sUK4nQ,
echo "Hello, world!" Pmuk !V}f
R $/q=*k
Nde1`W]:
Eiffel 50S*_4R
class HELLO_WORLD H6#SP~V
O> wGJ.
creation 5*"WS $
make ) \cnz
feature }sZy |dd
make is bnp:J|(ld
local C`oB [
io:BASIC_IO }D~m%%,
do $H,9GIivD
!!io [eF|2:
io.put_string("%N Hello, world!") Y% [H:
end -- make &6Wim<*
end -- class HELLO_WORLD jN+2+P%OL
up3mum
D1fUEHB}A8
Erlang H/#WpRg
-module(hello). fK4O
N'[R:
-export([hello_world/0]). Xp|$z ~
DqH]F S?]
hello_world() -> io:fwrite("Hello, World!\n"). \iwUsv>SB
C5^N)-]"
Mm^6*L]
Forth 1kc{`oL
." Hello, world!" CR n
u>6UjV
{6*UtG
xUs1-O1i
Fortran H#`&!p
WRITE(*,10) ~bjT,i
10 FORMAT('Hello, World!') y3 S T"U
STOP |R Qa.^.
END kdm@1x
,+g0#8?p^x
#4sSt-s&
HTML ^[ >
<HTML> 0?g&