“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。 qGw6Wp~
5xiYCOy
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》。 y`N1I
`XD$1>
以下是用不同语言写成的Hello World程序的几个例子: pSAXp#g
Ada <Z5prunov
with Ada.Text_Io; use Ada.Text_Io; ua{eri[
procedure Hello is R =jK3yfw
begin YP6+o#==
Put_Line ("Hello, world!"); )KNFS,5
end Hello; ovHbs^H%
N&n{R8=^"
ILQg@Jl
汇编语言 ":Q70*xSm
us]ah~U6A
x86 CPU,DOS,TASM s"'1|^od
MODEL SMALL q q`UvU
IDEAL QW!'A`*x
STACK 100H }A#FGH+
>?kt3.IQ!X
DATASEG YONg1.^!(
HW DB 'Hello, world!$' { sZrI5
kN_LD-
CODESEG r8xH A
MOV AX, @data 6(z.(eT
MOV DS, AX N5s_o0K4TU
MOV DX, OFFSET HW f ZISwr
MOV AH, 09H n_!&Wr^CX
INT 21H UKzmRa,s
MOV AX, 4C00H u&<LW4
INT 21H .`iq+i~
END 9Hu%Z/[!p
8FMP)N4+
FrVD~;
x86 CPU,GNU/Linux,NASM iD\joh-C
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). M,9WF)p)V
;Enter this into "hello.asm" then type: 0t9G$23
;"nasm -f elf hello.asm" `*slQ}i
;"ld hello.o -o hello" | zA ey\
;"./hello" cB<Zez
$UH_)Q2#J^
section .data ;data section declaration A ^~\
msg db 'Hello World!',0AH \/5 8#
len equ $-msg ;string length PCES&|*rf
=#W{&Te;
section .text ;code section declaration hIdGQKr>V
global _start ;entry point (start of execution) A[b'MNsv
_start: mov edx,len ;string length x&f?c=\F
mov ecx,msg ;string start cO<x:{`
mov ebx,1 ;file handle: stdout mX#T<_=d
mov eax,4 ;sys_write zR/ATm]9
int 80h ;kernel system call {c$W-t):U|
$%jV%k
mov ebx,0 ;return value M_PL{
mov eax,1 ;sys_exit lmod8B
int 80h ;kernel system call 3:C *'@
J/mLB7^R
OLiYjYd
x86 CPU,Windows,MASM32 ;[|x5o/<
.386 gcz1*3)
.model flat,stdcall E1>3 [3
option casemap:none ~r{Nc j
;Include 文件定义 u%T.XgY=j
include windows.inc ='mqfGRi>
include user32.inc &
z?y
includelib user32.lib u-? &~WA
include kernel32.inc 3(CUC
includelib kernel32.lib V9MA)If>
;数据段 ^awl-CG
.data Wl*\kQ}U
szCaption db 'A MessageBox!',0 Z8:iaP)
szText db 'Hello,world!',0 ^RY_j>i
;代码段 U$-FQRM4K
.code uW[<?sFG
start: yn7n
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK .
E.OBn
invoke ExitProcess,NULL .Wr7?'D1M
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5$y<nMP
end start !|}>Y
yyXJ_B
Y!SD^Ie7!
AWK Obw uyhjQ
BEGIN { print "Hello, world!" } =]D##R
';
qT
JY /Cd6\
BASIC f",B;C
传统版BASIC(例如GWBASIC): u2DsjaL
F6fm{
10 PRINT "Hello, world!" F'Wef11Yz
20 END ){6;o&CC:
<|.M]]}j
或在提示符输入: kQj8;LU
r[hfN2,#
?"Hello, world!":END L-MpdC
|#S!qnXB
现代版BASIC(例如Quick BASIC): j6Vuj/+}
Sd{>(YWx~
Print "Hello, world!" `;`34t_)
-
@
以下的语句在Quick BASIC中同样有效: =EIsqk^*
(5atU |8r
? "Hello,world!" za24-q
Z3I<
&3AGj,
BCPL k6dSj>F>
GET "LIBHDR" /+3|tb
8I@_X~R
LET START () BE `OBDx ^6F
$( $#0%gs/x
WRITES ("Hello, world!*N") 6-<r@{m$
$) @ws3X\`<C
Haturg
xOS4J+' s@
Befunge LEk
W^Mv
"!dlrow olleH">v ost~<4~
, rR."_Z2
^_@ >SccoI
}|x]8zL8G
6 Iup4sP
Brainfuck P$qIB[Xi
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
vH`u
+++++++++++++++.>.+++.------.--------.>+.>. Rk"_4zJk
(}}BZS&.
Ha;^U/0|
C 73P(oVj<
#include <stdio.h> YRB,jwne
SA}]ZK P
int main(void) ]2v31'
{ W~gFY#w
printf("Hello, world!\n");
}<XeZ?;
return 0; q7X/"Dfx
} V-t!
:^px1
4Jht{#IIG
C++ A/GEDG
?
#include <iostream> ]x~H"<V
QHA<7Wg
int main() rU(N@i%
{ In]h+tG?rN
std::cout << "Hello, world!" << std::endl; YsDn?p D@
return 0; {-H6Z#b[
} Rg'1 F
"bRck88V
#OG_OI
C++/CLI 1!,lI?j,
int main() Ib]{rmaP
{ 84|Hn|4t
System::Console::WriteLine("Hello, world!"); x@Q}sW92
} qc@CV:
5.idC-\
E@t^IGDr
C# (C Sharp) +\Rp N
class HelloWorldApp MB:E/
{ 0hCJovSG%
public static void Main() `y
m^0x8
{ CkIICx
System.Console.WriteLine("Hello, world!"); KeY)%{
} LkNC8V
} $Nnz|y
% &{>oEQ
trg+")a
COBOL YQ2ie>C8
IDENTIFICATION DIVISION. YS/{q~$t
PROGRAM-ID. HELLO-WORLD. =XyK/$
fM d]P:B
ENVIRONMENT DIVISION. )7:2v1Xr]
.}2^YOmd
DATA DIVISION. "o%N`Xlx
%Wn/)#T|
PROCEDURE DIVISION. ~E#>2Mh
DISPLAY "Hello, world!". YP+0uZ[g
STOP RUN. vlx
wt~
HuCH`|v-
_! \X>rfz
Common Lisp rAk*~OK
(format t "Hello world!~%") '^n2]<
EcFYP"{U
J*qepq`_
DOS批处理 HIeWgw^"
@echo off }kGJ)zh
echo "Hello, world!" miEfxim
zN*/G6>A
NhXTt!S6C
Eiffel ME{i-E4
class HELLO_WORLD \2pJ ]
,??xW{*|
creation r(0I>|u
make 7[^:[OEE
feature w=y!|F
make is .}%$l.#a
local j<4J_wE
io:BASIC_IO lD.PNwM
do cBiv=!n
!!io Ond"Eq=r
io.put_string("%N Hello, world!") R2Lq,(@-
end -- make 5fSDdaO
end -- class HELLO_WORLD yUqvF6+26
0X~Dxs
':kBHCR7
Erlang ;"wU+
-module(hello). p~$\@8@
-export([hello_world/0]). D9+a"2|3<
'&'?
S
hello_world() -> io:fwrite("Hello, World!\n"). ;F"W6G
{FteQ@(
tbl!{Qwx
Forth l&^9<th
." Hello, world!" CR DTI+VY.W^
^s_E |~U
_|x%M}O},
Fortran %t`a-m
WRITE(*,10) qdjRw#LS^q
10 FORMAT('Hello, World!') m>jX4D7KZ
STOP {.DI[@.g
END Xo;J1H
_LxV)
Yk6fr~b
HTML 's(0>i
<HTML> <~<I K=n
<HEAD> aG?'F`UQ
<TITLE> Hello World! </TITLE> 0&$e:O'v
</HEAD> b8feo'4Z
<BODY> #AFr@n
<p>Hello World!</p> G]=U=9ZI
</BODY> ]nEN3RJ
</HTML> rKP"|+^
9v_gR52vh
x.<^L] "
HQ9+ 0[x?Q[~S_0
H #sq -V,8
#<MLW4P
3T|:1Nw
INTERCAL gjk=`lU
PLEASE DO ,1 <- #13 rbqH9 S
DO ,1 SUB #1 <- #238 VABrw t
DO ,1 SUB #2 <- #112 ig7)VKr
DO ,1 SUB #3 <- #112
QSmE:Y
DO ,1 SUB #4 <- #0 *B#<5<T
DO ,1 SUB #5 <- #64 5MO:hE5sm
DO ,1 SUB #6 <- #238 [="moh2*f
DO ,1 SUB #7 <- #26 GL.&
g{$#+
DO ,1 SUB #8 <- #248 kS[k*bN0
DO ,1 SUB #9 <- #168 ^-f5;B`\i
DO ,1 SUB #10 <- #24 x\3tSP7Vp
DO ,1 SUB #11 <- #16 _Oh;._PS
DO ,1 SUB #12 <- #158 _|g(BK2}
DO ,1 SUB #13 <- #52 69`9!heu
PLEASE READ OUT ,1 H7H'0C
PLEASE GIVE UP Gg{@]9
p}}}~ lC/
_+T;4U'p
Java t9zPJQlT}
public class Hello \# lh b
{ axxdW)+K
public static void main(String[] args) @$F(({?
{ <