“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。 YY1{v?[
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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》。 Ki&WS<,0Z
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以下是用不同语言写成的Hello World程序的几个例子: vCYSm 0
Ada >F_qa=t%[
with Ada.Text_Io; use Ada.Text_Io; .eZPp~[lAN
procedure Hello is mdmZ1:PBM
begin 401/33yBJ
Put_Line ("Hello, world!"); dlU
JYI
end Hello; :e5:\|5*5
v ^ FV
t
G
"c&C
汇编语言 "\wDS2M)
2^k^"<h5j
x86 CPU,DOS,TASM "^e}C@
MODEL SMALL 1"~O"m sb
IDEAL *Xf[b)FR
STACK 100H '=Ip5A{S /
cQUH %7m
DATASEG UpE1PLZlB
HW DB 'Hello, world!$' kHz+ZY<?
A>ug'.
CODESEG XSL
t;zL:
MOV AX, @data k:(e79
MOV DS, AX xIq"[?m
MOV DX, OFFSET HW 5Xq.=/eX
MOV AH, 09H 71}L#nQ
INT 21H F|h,a;2
MOV AX, 4C00H TYmUPS$
INT 21H f0N)N}y
END Q
KDb
c)n0D=
xC=3|,U
x86 CPU,GNU/Linux,NASM E@'CU9Fo
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). d=.n|rS4
W
;Enter this into "hello.asm" then type: jN5} 2 p*
;"nasm -f elf hello.asm" ;OT#V,}r
;"ld hello.o -o hello" 2:6Y83
;"./hello" *1 J#Mdd
K2cp f
section .data ;data section declaration |P[D2R}
msg db 'Hello World!',0AH {YxSH%
len equ $-msg ;string length Rd@n?qB
)U/@J+{{
section .text ;code section declaration y:^>(l #;
global _start ;entry point (start of execution) X,C/x)
_start: mov edx,len ;string length ><:lUt*N2
mov ecx,msg ;string start T[8"u<O96
mov ebx,1 ;file handle: stdout zwniS6R1
mov eax,4 ;sys_write [/#k$-
int 80h ;kernel system call sWpRX2{5,
66Cj=n5
mov ebx,0 ;return value v2W"+QS}u
mov eax,1 ;sys_exit aLyhxmn ^)
int 80h ;kernel system call ;?Y`e
n<Xm%KH.
VE S4x%r=
x86 CPU,Windows,MASM32 1rvf\ [
.386 =+sIX3
.model flat,stdcall uN?O*h/(
option casemap:none U}C#:Xi>$
;Include 文件定义 *M\i4FO8
include windows.inc LF3GVu,
include user32.inc >TJKH^7n
includelib user32.lib (
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include kernel32.inc lDX&v$
includelib kernel32.lib %q\P 'cK
;数据段 i+
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.data RWm Q]
szCaption db 'A MessageBox!',0 @gVyLefS6g
szText db 'Hello,world!',0 *"9)a6T
t+
;代码段 %imBGh
.code ;?L[]Ezzt
start: aK=3`q
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 4`'BaUU(
invoke ExitProcess,NULL %` uRUex
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> /IQ-|Qkg
end start S5[RSAbf*t
\kJt@ [w%
3M:B?2
AWK 3S2p:\]
BEGIN { print "Hello, world!" } VA&OI;=ri
fylA0{
2KNKdV3NK
BASIC r
:MaAT<
传统版BASIC(例如GWBASIC): @xM!:
d}B_ll#j-
10 PRINT "Hello, world!" :$Di.|l@7
20 END < $?}^
0R
g(}8n bTA
或在提示符输入: =A&*SE o5
5]n<%bP\
?"Hello, world!":END !Pjg&19
-D^y)
现代版BASIC(例如Quick BASIC): EvardUB)
s!RA_%8/>
Print "Hello, world!" ]TZWFL-
u:u 7|\q
以下的语句在Quick BASIC中同样有效: GbrPtu2{@V
~9'4w-Sy
? "Hello,world!"
{{)[Ap)
|>fS"u
2P>za\
BCPL b)`#^uxxJ
GET "LIBHDR" 8&[<pbN)
R{y{
LET START () BE IqJ=\
$( #1hz=~YO
WRITES ("Hello, world!*N") E#F9<=mA)
$) oHFDg?Z`
58ZiCvqv
i}{Q\#=#
Befunge -3%)nV
"!dlrow olleH">v $m0x8<7nu
, )tQ6rd'
^_@ U.sPFt
T9v#Jb6
fy-Z{
Brainfuck ~5dq5_
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< jO
N}&/
+++++++++++++++.>.+++.------.--------.>+.>. eeTaF!W
>(4S `}K
r@ *A
C 92ww[+RQ@
#include <stdio.h> 1?$!y
2_~XjwKE
int main(void) ?-& D'
{ bh6wI%8H
printf("Hello, world!\n"); W%ZU& YBc
return 0; l*MUDT@M8\
} v?=VZ~`O(
P\0%nyOG(%
i1\ /\^
C++ JkDZl?x5
#include <iostream> 'Mhdw}
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int main() ewPd hCK
{ Bo(l !G
std::cout << "Hello, world!" << std::endl; 9NXiCP9A
return 0; d?X6x
}
{h+E&u[zL
l0 :xQV`
y:zT1I@>
C++/CLI L"<Eov6
int main() eZkz 1j~
{ TUYl><F5v=
System::Console::WriteLine("Hello, world!"); Jl9TMu!1]
} K T72D
##ea-"m8
#/=yz<B
C# (C Sharp) 3t6'5{
class HelloWorldApp Nmq5Tv
{ mzR
@P$:36
public static void Main() =zGz|YI*?
{ uKzz/Y{
System.Console.WriteLine("Hello, world!"); z`7C)p:
} *fX)=?h56
} K1nwv"
zQfxw?~A
KTJ$#1q
COBOL Q*{
2
IDENTIFICATION DIVISION. +Z0E?,Oz
PROGRAM-ID. HELLO-WORLD. ~m&oa@*=y
R6.#gb8^oS
ENVIRONMENT DIVISION. 'J2P3t
D4-U[l+K>
DATA DIVISION. -iX!F~qS,
L, GtIZkE
PROCEDURE DIVISION.
H;L&G|[
DISPLAY "Hello, world!". ;$;/#8`>
STOP RUN. /YR$#&N2
)fr\V."
jd'R2e
Common Lisp dK$dQR#
(format t "Hello world!~%") [=!MS?-G
^/,yZ:
|{"7/~*[
DOS批处理 8R D)yRJ
@echo off #<3\}*/
echo "Hello, world!" :UciFIa
,FO|'l
Jz b".A
Eiffel PdnK@a
class HELLO_WORLD $^>vJk<
x{5*%}lX8
creation i i
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make k]sT'}[n
feature zb$U'D_-f
make is gC- 0je
local u9(AT>HxT
io:BASIC_IO C(hg"_W ou
do + k:?;ZG
!!io ?^p8]Va%
io.put_string("%N Hello, world!") D._r@~o
end -- make h^,a 1'
end -- class HELLO_WORLD 1)ne-e
x$I>e
MG>;|*$%
Erlang u>Hx#R<*%
-module(hello). X=~QE}x
-export([hello_world/0]). |7'W)s5.
3\ed4D
hello_world() -> io:fwrite("Hello, World!\n"). 2ra4t]f6
{\I\4P
[j39A`t7
o
Forth KG@hjO
." Hello, world!" CR uI/
A_
LLiX%XOh
p10->BBg
Fortran Gx($q;8
WRITE(*,10) Sq%R
10 FORMAT('Hello, World!') e+U o-CO
STOP jT',+
END /8T{bJ5
rD gl@B3
IZLX[y
HTML <LY+"
Y
<HTML> /FY_LM
<HEAD> 00+5a
TrE
<TITLE> Hello World! </TITLE> F_`Gs8-VH
</HEAD> IT|CfQ [D
<BODY> L\I/2aiE
<p>Hello World!</p> u#<]>EtbB
</BODY> 1)y}.y5S
</HTML> (X/JXu{
2z:9^a/]Na
}dCnFZ{K3
HQ9+ G].Z| Z9
H ?fGY,<c
9L,T @#7
6*tGf`Pfdw
INTERCAL *RhdoD|a
PLEASE DO ,1 <- #13 .E(Ucnz/
DO ,1 SUB #1 <- #238 -[z;y73]t
DO ,1 SUB #2 <- #112 fy5)Tih%.*
DO ,1 SUB #3 <- #112 4[D@[kAs
DO ,1 SUB #4 <- #0 O#g31?TO
DO ,1 SUB #5 <- #64 lCXo+|$?s
DO ,1 SUB #6 <- #238
Ox RzKT
DO ,1 SUB #7 <- #26 2\n6XAQ*
DO ,1 SUB #8 <- #248 qW*)]s)z
DO ,1 SUB #9 <- #168 &>SE9w/?o
DO ,1 SUB #10 <- #24 L-yC 'C
DO ,1 SUB #11 <- #16 *
-)aGL
DO ,1 SUB #12 <- #158 oID,PB*9
DO ,1 SUB #13 <- #52 &LE/hA
PLEASE READ OUT ,1 c)?y3LX
PLEASE GIVE UP 7o3f5"z
*" wsMO
%0 S0"t
Java v2NzPzzyb
public class Hello S"*wP[d.9
{ zKo,B/Ke4
public static void main(String[] args) 6Y=)12T
{ t+t&eg
System.out.println("Hello, world!"); G"]'`2.m
} :7gIm|2"]
} {8eNQ-4I
sqhM[u
k
}QK-@T@4<
JSP o 0B`~7(
<% B4%W,F:@
out.print("Hello, world!"); 9"[#\TW9Vb
%> hq|/XBd||
I?gbu@o
09r.0Ks
MIXAL lq74Fz&(
TERM EQU 19 the MIX console device number ^c*'O0y[D
ORIG 1000 start address OvkY zI`
START OUT MSG(TERM) output data at address MSG PM{kiz^
HLT halt execution ?o2L
MSG ALF "MIXAL" \7RP6o
ALF " HELL" FKPI{l
ALF "O WOR" (c;$^xZK
ALF "LD " 72aj4k]^
END START end of the program i9Qx{f88
ffd yDUzQ
^vUdf.n9
Nuva 9!tRM-
<..直接输出..> @l 1 piz8
Hello, world! J}BS/Tr}=
(fC [Y
<..或者..> b1-JnEc
=KkHck33
<. a4?:suX$
// 不带换行 {C
[7V{4(%
? "Hello, world!" <S<(wFE@4
@#nB]qV:e
// 或者 h/d&P
bx1'
// 带换行 o}<}zTU
?? 'Hello, world!' )tB mSVprl
.> ds`a6>746
)]'?yS"
E1=]m
OCaml ^$VOC>>9
let main () = WL<Cj_N_{H
print_endline "Hello world!";; o@}Jd0D4
P'[w9'B
u>}k+8~
Pascal ^8DC
W`V
program Hello; qjuX16o
begin uGOvZO^v
writeln('Hello, world!'); ]w({5i
end. k \|Hd"T
~)ls.NXI
Pn0V{SJOJ%
Perl B+ +:7!
#!/usr/local/bin/perl ~nw]q<7r
print "Hello, world!\n"; /_v@YB!0
lf&g *%?1
VB\oK\F5z
PHP D{~I
<?php '~2;WF0h
print("Hello, world!"); k? X7h2
?> `8EHhN;
U\P ;,o
s J,:[
Pike i!9yN:m0
#!/usr/local/bin/pike K[O'@v
int main() >J+hu;I5
{ )=#QTiJ
write("Hello, world!\n"); ?J|~G{yH
return 0; >O?5mfMK
} l:%4@t`
|\J8:b>}
w`q):yXX
PL/I Gz@'W%6yaV
Test: procedure options(main); $3k5hDA0e
declare My_String char(20) varying initialize('Hello, world!'); mJp)nF8r~
put skip list(My_String); YQLp#
end Test; (=,p"3^
;vnG
\^i/:
Prolog %&0_0BU
goal 8V?O=3<a
write("hello,world!"). 3+rud9T
{fmSmD
]25 x X
Python <J!#k@LY]7
#!/usr/local/bin/python "CX&2Xfe
print "Hello, world!" '(4$h3-gv7
[kaj8
4vQ]7`I.f
REXX sz9C':`W
say "Hello, world!" Z7lv|m&
T_i]y4dg
_Gvn1"l
Ruby |5^tp
#!/usr/bin/ruby LNOm"D?"
print "Hello, world!\n" <KlG#7M>
eX;C.[&7;8
.-Yhpw>f
Scheme Ksr.'
(display "Hello, world!") ;rC)*=4#
(newline) $9)| cO
'tm%3`
F
O0[.*xG
sed (需要至少一行输入) 5srj|'ja
sed -ne '1s/.*/Hello, world!/p' #-r,;
9)}Nx>K
KeFEUHU
Smalltalk {a;my"ly
Transcript show: 'Hello, world!' ?B7n,!&~
9x$Kb7'F
{]ie|>'=C
SNOBOL lC):$W
OUTPUT = "Hello, world!"
gJz~~g'
END lB3@jF
]n _OQ)VO
OFH!z{*
SQL 0Rgo#`7l
create table MESSAGE (TEXT char(15)); !(QDhnx}9c
insert into MESSAGE (TEXT) values ('Hello, world!'); #[=%+ *Q
select TEXT from MESSAGE; D;
i%J
drop table MESSAGE; T$)N2]FE
i^`]TOP
y(!J8(yA
Tcl 2GkJ7cL
#!/usr/local/bin/tcl [ed6n@/O@
puts "Hello, world!" %+0
7>/
98O0M#|d
@'XxMO[Z!<
TScript w&VM