“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。 w8iXuRv
poU1Q#+4p*
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》。 ]21`x
x*7Q
以下是用不同语言写成的Hello World程序的几个例子: "
.<>(bE
Ada s=[T,:Z
with Ada.Text_Io; use Ada.Text_Io; ^sqTgrG
procedure Hello is u}QcyG^
begin %ZbdWHO#
Put_Line ("Hello, world!"); ,:=g}i
end Hello; *-\qO.4\
h#JX$9
up==g
汇编语言 PL|zm5923
&@ [pJ2
x86 CPU,DOS,TASM 7,7-E&d
MODEL SMALL Or3GrZ!H
IDEAL "OWW -m
STACK 100H -|g9__|@
e]DuV)k&
DATASEG VqL#w<A%
HW DB 'Hello, world!$' "J"RH:$v
H9%[!
RF
CODESEG Mfinh@K,
MOV AX, @data J5"d|i
MOV DS, AX <19A=
MOV DX, OFFSET HW _MLbJ
MOV AH, 09H
k(ho?
INT 21H ?R":"*eu
MOV AX, 4C00H 1G<S'd+N
INT 21H .Q5zmaA]
END )j\9IdkU;y
A~M .v0
F!7\Za,
x86 CPU,GNU/Linux,NASM ?A]/
M~3B
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). $w+()iI
;Enter this into "hello.asm" then type: ?XllPnuKt%
;"nasm -f elf hello.asm" M.3ULt8
;"ld hello.o -o hello" 2|\WaH9P
;"./hello" O<()T6
\&\U&^?
section .data ;data section declaration d.xT8l}sS
msg db 'Hello World!',0AH Y.
Uca<{.[
len equ $-msg ;string length \__xTL\
Hj97&C{Q^
section .text ;code section declaration Zdy{e|-Zn
global _start ;entry point (start of execution) V~MyX&`
_start: mov edx,len ;string length +F]=Z
mov ecx,msg ;string start >qS2ha
mov ebx,1 ;file handle: stdout Plj >+XRO
mov eax,4 ;sys_write Fk`|?pQm
int 80h ;kernel system call a3J'
c
Nh[H[1"J
mov ebx,0 ;return value C Ef*:kr
mov eax,1 ;sys_exit l1%ubu
int 80h ;kernel system call MGLcM&oR
kca#ssN
/*e6('9s
x86 CPU,Windows,MASM32 %;,4q B
.386 7* R
%zJ
.model flat,stdcall YVLK X}$)(
option casemap:none &fe67#0r)
;Include 文件定义 %:N;+1
include windows.inc wnjAiIE5
include user32.inc 9_xrw:4
includelib user32.lib {J*|)-eAw
include kernel32.inc 9c{T|+]
includelib kernel32.lib 5;@2SY7,
;数据段 ]ONBr(M\
.data &G)/i*
szCaption db 'A MessageBox!',0 nSpOTQ
szText db 'Hello,world!',0 _%KRZx}
;代码段 rEwd76?
.code p]rV\,Yss
start: {sW>J0
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK I<qG{PA
invoke ExitProcess,NULL JH._/I
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 3}5Ya\x
end start }CM#jN?(
/HVxZ2bar
dlH&8
AWK 0@wXE\s
BEGIN { print "Hello, world!" } #_Z)2ESX
1h3`y
lUIh0%O
BASIC sspGB>h8l
传统版BASIC(例如GWBASIC): zNM*xPgS
L, 2;-b|
10 PRINT "Hello, world!" zmFS]IOv$
20 END nT9Hw~f<j
L KLLBrm:
或在提示符输入: D<'G\#n3I=
C6A!JegU
?"Hello, world!":END )Lg~2]'?j
?{%"v\w
现代版BASIC(例如Quick BASIC): 'HJ<"<
0IyT(1hS
Print "Hello, world!" M44$E4a20
Ym?VF{e,
以下的语句在Quick BASIC中同样有效:
{__NVv
}b^x#HC
? "Hello,world!" umN4|X
G^:?)WRG
afE8Kqa:H
BCPL xy-Vw"I[bh
GET "LIBHDR" Q%W>m0%
nd"$gi
LET START () BE VNwOD-b/]
$( 5DJ!:QY!
WRITES ("Hello, world!*N") hcoZ5!LvT
$) |3BxNFe`%
xAr&sGMA
KGGJ\r6
Befunge $!^C|,CS
"!dlrow olleH">v <B!DwMk;.
, NH4T*R)Vz
^_@ 1[!7xA0 j
:OV6R,
[Pl''[
Brainfuck j>G|Xv
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 5|Oj\L{
+++++++++++++++.>.+++.------.--------.>+.>. f^lhdZ\
B:ugEAo_
N%9?8X[5
C K^IB1U$
#include <stdio.h> 6Zx5^f(qd
dEkAUH
int main(void) #u3E{NB
{ ji<(}d~L*
printf("Hello, world!\n"); :mhO/Bx
return 0; N]-skz<v
} >z73uKA(
e.W <pI,
,[<$X{9
C++ -/:K.SY,
#include <iostream> QZJnb%]
O*%5P5'p"{
int main() )hC3'B/[Y
{ e/x6{~ju^N
std::cout << "Hello, world!" << std::endl; mV+9*or
return 0; lUdk^7:M
} tT+W>oA/M
^%0^DN
VO~%O.>
C++/CLI `dhBLAt
int main() (gIFuOGi>
{ ;*hVAxs1
System::Console::WriteLine("Hello, world!"); _{n4jdw%(
} -/Zy{2 <u
O;|jLf_If
&Zjs
C# (C Sharp) 'K\H$<CJ
class HelloWorldApp g_rk_4]
{ Eqi;m,)
public static void Main() pG22Nx
{ sFHqLG{/
System.Console.WriteLine("Hello, world!"); 'uF-}_
|
} n@6vCdk.
} ={51fr/C%
7=s0Pm
yCuLo`
COBOL @d:GtAW
IDENTIFICATION DIVISION. P9 y+rF.
PROGRAM-ID. HELLO-WORLD. 9@}5FoX"
P=7X+}@
ENVIRONMENT DIVISION. SVObJsB^
!s:_>P`MQ
DATA DIVISION. gLg.mV1<
<$ qT(3w<y
PROCEDURE DIVISION. #fk1'c2
DISPLAY "Hello, world!".
^Vf@J
STOP RUN. gX*j|(r
0|g@;Pc
{`-AIlH(
Common Lisp Hp5.F>-
(format t "Hello world!~%") E!uQ>'iq.
*3s-=.U~
(" +clb`
DOS批处理 {,1>(
@echo off 8|Ob7+
echo "Hello, world!" HD3WsIim*
Z!*6;[]SfG
H[}lzL)
Eiffel ouO9%)zv
class HELLO_WORLD KT+{-"4-
0/1=2E^,
creation %gj7KF
make !yr4B"kz
feature Db !8N
make is w`fbUh6/
local O*Y ? :
t
io:BASIC_IO ].2t7{64
do :4\%a4{Ie
!!io k7j[tB#
io.put_string("%N Hello, world!") CD5% iFy
end -- make My Ky*wD
end -- class HELLO_WORLD 6uKP
BL@,
\En"=)A
BoOuN94
Erlang [rW];H8:~
-module(hello). x-W~&`UU
-export([hello_world/0]). EhW"s%Q
Lf%=vd
hello_world() -> io:fwrite("Hello, World!\n"). qM6hE.J
HXC\``E
:{VXDT"
Forth l<+PA$+}}
." Hello, world!" CR ,In%r`{i
x+ER 3wDD@
IP@3R(DS%
Fortran o7WAH@g
WRITE(*,10) ijvDFyN>
10 FORMAT('Hello, World!') 6RguUDRQ
STOP =qpGAv_#
END k+*pg4'
f=VlO d
6 EfBz
HTML #9Fk&Lx
<HTML> iX<" \pV
<HEAD> wwQ2\2w>Hm
<TITLE> Hello World! </TITLE> NHe)$%a=H
</HEAD> vVIND
<BODY> J*Ie# :J]
<p>Hello World!</p> Ryh 0r
</BODY> (:O6sTx-hE
</HTML> <&g