“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。 pt=[XhxC(>
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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》。 JjM^\LwKkL
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以下是用不同语言写成的Hello World程序的几个例子: W2REwUps
Ada p_qH7W
with Ada.Text_Io; use Ada.Text_Io; GSl\n"S]=
procedure Hello is U5Rzfm4
begin ^ K/B[8
Put_Line ("Hello, world!"); `W"-jz5#=
end Hello; $
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8z@A/$T
汇编语言 ,2u]rLxx;
j J9|
x86 CPU,DOS,TASM ow+NT
MODEL SMALL Yd]f}5F
IDEAL 1W5YS +pf
STACK 100H cZ5[A T
j&8U:Q,
DATASEG B^eea [
HW DB 'Hello, world!$' +1e*>jE
t#kmtJC
CODESEG 18a6i^7
MOV AX, @data -O2QzzE&
MOV DS, AX X~lOFH;}q
MOV DX, OFFSET HW sW[42A
MOV AH, 09H MTr _8tI
INT 21H b%AYYk)d?
MOV AX, 4C00H X!r!lW
INT 21H zm"& 8/l
END ${`\In_?O
XxV]U{i!
0ro)e~_@*
x86 CPU,GNU/Linux,NASM 3fpX
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). GJ!usv u
;Enter this into "hello.asm" then type: G.L4l|%W
;"nasm -f elf hello.asm" {Ke3
;"ld hello.o -o hello" i^j{l_-JE
;"./hello" 8amtTM
594$X@!v
section .data ;data section declaration #~(@Ka.eA0
msg db 'Hello World!',0AH GMksr%0Pj
len equ $-msg ;string length W.>yIA%
)00#Rrt9
section .text ;code section declaration K{HdqmxL.I
global _start ;entry point (start of execution)
c,x2
_start: mov edx,len ;string length ;u, 5
2
mov ecx,msg ;string start n1$p
esr
mov ebx,1 ;file handle: stdout 2_U H, n
mov eax,4 ;sys_write 5JQq?e)n
int 80h ;kernel system call cpf8f i
~ 5`Ngpp
mov ebx,0 ;return value 3"%:S_[
mov eax,1 ;sys_exit )\p@E3Uxf
int 80h ;kernel system call
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_)lK.5
DAJh9I
x86 CPU,Windows,MASM32 owQLAV
.386 2Ask]
.model flat,stdcall vrh}X[JEw'
option casemap:none <PXA`]x~
;Include 文件定义 g`\Vy4w
include windows.inc NeUpl./b
include user32.inc %$Mvq&ZZ
includelib user32.lib L[<MBgFKv
include kernel32.inc SrU,-mA W
includelib kernel32.lib OpYq qBf_
;数据段 @ -g^R4e<
.data *j8w"
4
szCaption db 'A MessageBox!',0 &:w{[H$-
szText db 'Hello,world!',0 !i{@B
;代码段 nbhx2@Teqe
.code n0nkv[
start: 9v0f4Pbxm
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK UI |D?z<
invoke ExitProcess,NULL /TS>I8V!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> bMf+/n
end start 2L ~U^
lYU_uFOs\
lAV6z%MmM
AWK /9W-;l{=z
BEGIN { print "Hello, world!" } y%p&g
=v1s@5;~
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BASIC t:$p8qR
传统版BASIC(例如GWBASIC): t4h5R
H<dm;cU
10 PRINT "Hello, world!" j @sd x)1+
20 END 5h1FvJg
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或在提示符输入: 2i8'*L+j
B
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?"Hello, world!":END u]CW5snz
SC"=M^E
现代版BASIC(例如Quick BASIC): qDOx5.d
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Print "Hello, world!" >e"1a/2%>&
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以下的语句在Quick BASIC中同样有效: Va?wG3 w
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? "Hello,world!" L<5go\!bV
CQ6Z[hLWF
'0z@Jevd?
BCPL 8M8=uw~#
GET "LIBHDR" P7<~S8)Y
zLC\Rc4
LET START () BE )=ZWn,ZB
$( wIL5-k,
WRITES ("Hello, world!*N") ^BSMlKyB
$) ppfBfMX
L)4TW6IUk
B4_0+K H
Befunge (N0G[(>
"!dlrow olleH">v *}A J7]
, |_
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^_@ WZ;f3
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pgfI1`h
Brainfuck tb^3-ZUb
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< mp%i(Y"vp
+++++++++++++++.>.+++.------.--------.>+.>. o1-Zh!*a*
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C OV Iu&6#
#include <stdio.h> p7Gs
5(tOQ%AQ
int main(void) IgQW 5E#
{ Z_cTuu0'
printf("Hello, world!\n"); m?>$!B4jFB
return 0; ES<"YF
} bY&s$Ry3"
jo0p/5;
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C++ %)u5A!"
#include <iostream> \c_1uDRoUn
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int main() g_5:o
3s
{ 00n6v;X
std::cout << "Hello, world!" << std::endl; bxK1v7
return 0; `4gm'C
} }`\+_@w
gNo.&G [
owJPEx
C++/CLI }I9\=jT
int main() $+R0RqV$V~
{ TCv}N0
System::Console::WriteLine("Hello, world!"); iw12x:
} a<rk'4,8a
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lX;2~iW{/
C# (C Sharp) Nq"/:3@4
class HelloWorldApp xW#r)aN]p
{ W{?7Pn?1`
public static void Main() *R0Ae 4
{ 8 U B?X
System.Console.WriteLine("Hello, world!"); {xMY2I++
} 1wi{lJaz
} W,}HQ
=;i@,{
~
CT6a
COBOL l{E+j%
IDENTIFICATION DIVISION. 5kofO
PROGRAM-ID. HELLO-WORLD. #xNLr
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ENVIRONMENT DIVISION. { P&l`
qWfG@hn
DATA DIVISION. AN\:
'&xv)tno
PROCEDURE DIVISION. #7/_Usso
DISPLAY "Hello, world!". #y~^!fdp9
STOP RUN. U(3{6^>Gc
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!dv
Common Lisp 9pb4!=g*
(format t "Hello world!~%") /q ;MihK
6dt]$
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DOS批处理
pBG(%3PpW
@echo off `s Az1/N
echo "Hello, world!" [2a*TI
ZYos.ay
"Rf8#\Y/<
Eiffel YrS%Yvhj0
class HELLO_WORLD H B_si
f|cd_?|
creation >c|u|^3zt
make .Qn54tS0q
feature ,)@Q,EHN;
make is [u[F6Wst
local l23_K7
io:BASIC_IO /o*r[g7<
do D ?1$I0 =
!!io xVao3+r
io.put_string("%N Hello, world!") L6fc_Mo.EE
end -- make b?hdWQSW7
end -- class HELLO_WORLD IX7<
P%]li`56-c
HcXyU/>D
Erlang lUJ/ nG0l
-module(hello). \H!ECTI
-export([hello_world/0]). Bmm#5X@*
>%h_ R:
hello_world() -> io:fwrite("Hello, World!\n"). ]s?BwLU6
#DXC6f
)cbe4
Forth <]r.wn=}M
." Hello, world!" CR Y 4sf 2w
x JQde 4
0Y,_
DU
Fortran 7?:7}xb-
WRITE(*,10) GU8b_~Gk?
10 FORMAT('Hello, World!') ]rO`eN[~U
STOP WoHFt*e2
END g>_lU
vSE
.cdm@_Ls
/%\E2+6
HTML X3NHQMI
<HTML> a;|C51GH
<HEAD> *Em 9R
<TITLE> Hello World! </TITLE> -o#HO_9
</HEAD> $?YRy_SI
<BODY> <03 @c s
<p>Hello World!</p> !j#Z48=&
</BODY> -9Wx;u4]o
</HTML> @%q0fj8b
lR\=] ]7I>
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5t
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i+IHV
H rj&
qOVs9'R
!([Q1r{u
INTERCAL br*L|s\P\9
PLEASE DO ,1 <- #13 JhRXfIK>{
DO ,1 SUB #1 <- #238 )sWdN(E3
DO ,1 SUB #2 <- #112 oM/(&"
DO ,1 SUB #3 <- #112
#"&h'V
DO ,1 SUB #4 <- #0 RUC
V!L
DO ,1 SUB #5 <- #64 *lRP ZN
DO ,1 SUB #6 <- #238 /Y_F"GQ
DO ,1 SUB #7 <- #26 L']EYK5
DO ,1 SUB #8 <- #248 ))^rk6
DO ,1 SUB #9 <- #168 3
[: x#r
DO ,1 SUB #10 <- #24 $=uyZTYF)}
DO ,1 SUB #11 <- #16 }A3(g$8KR
DO ,1 SUB #12 <- #158 d?C8rkV'
DO ,1 SUB #13 <- #52 qRT1W re
3
PLEASE READ OUT ,1 `d2}>
PLEASE GIVE UP )eop:!m
}2:/&H'
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Java pRe, B'&
public class Hello dtw1Am#Ci
{ ; {$9Sc $
public static void main(String[] args) SUsD)!u_H
{ s,XKl5'+8e
System.out.println("Hello, world!"); +QT(~<
} 3YVG|Bc~_
} n0 q5|ES
r e.chQ6
JG @bl
JSP rT9<_<
<% uUu]JDdz
out.print("Hello, world!"); *xR;}%s\
%> 4:RL[;
y
Dg
jE|Ju:}&
MIXAL D[ U[D
TERM EQU 19 the MIX console device number - ?_aYJ
ORIG 1000 start address t-*oVX3D
START OUT MSG(TERM) output data at address MSG H6X]D"Y,
HLT halt execution Ve#VGlI
MSG ALF "MIXAL" Vui5Z K
ALF " HELL" teH $hd-q
ALF "O WOR" 6Ko[[?Lf[
ALF "LD " E5qh]z(
END START end of the program ":EfR`A#
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Nuva ]`)50\pdw
<..直接输出..> Cy-q9uTm
Hello, world! v*`$is+
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<..或者..> K-(k6<h
,6:ya8vB
<. n=!]!'h\:
// 不带换行 $o"Szy
? "Hello, world!" V1 T?T9m
(1p[K-J)r
// 或者 (oO*|\9u
:c3}J<Z
// 带换行 Nv}'"V>
?? 'Hello, world!' 58)`1p\c'
.> M>^Ho2
{)nm
{IV,
ykcW>h
OCaml 6!7LgM%4
let main () = }w .[ZeP
print_endline "Hello world!";; Y^$^B,
-jy-KC
.^j 6
Pascal tj/X7|
program Hello; &TYTeJ]
begin q8%T)$!
writeln('Hello, world!'); )HbsUm#
end. $/^DY&
~?i;~S
7pH`"$
Perl KPO?eeT.WZ
#!/usr/local/bin/perl ZYDLl8
print "Hello, world!\n"; sUA==k
9a}rE
<?UbzT7X
PHP 1%~yb Q
<?php ({JXv
print("Hello, world!"); eaLSq
?> H0<(j(JK
|>o]+ V
Tbv", b
Pike >PdYQDyVS
#!/usr/local/bin/pike 8OE=7PK
int main() X+zFRL%
{ tSX<^VER7
write("Hello, world!\n"); %
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return 0; \; ! oG
} |"h# Q[3
0G`_dMN
Y"~Tf{8
PL/I Y+5nn
Test: procedure options(main); 8|kr|l
declare My_String char(20) varying initialize('Hello, world!'); kDJ$kv
put skip list(My_String); wGdnv}#
end Test; qW*JB4`?a
BoQLjS{kN
4FSA:]o-
Prolog I\djZG$s;N
goal XFpII45
write("hello,world!"). )yvI {
c'M#va
k L\;90
Python u!I Es
#!/usr/local/bin/python M^^5JNY
print "Hello, world!" (IdXJvKU!
f P'qUN
7u[U %yd
REXX cQ(zBf
say "Hello, world!" umPd+5i
Q;r9>E!
48;6C g
Ruby rg Gm[SL*<
#!/usr/bin/ruby m(MPVY<X
print "Hello, world!\n" ?sfas57&y
$|+q9o\
Ia_I~ U$
Scheme
*Ju$A
(display "Hello, world!") Q72}V9I9
(newline) WJH-~,u
fZ8%Z
'
>a(|
sed (需要至少一行输入) {
FVLH:{U^
sed -ne '1s/.*/Hello, world!/p' }diB
4C@ .X[r
3ZdheenK9
Smalltalk _dOR-<
Transcript show: 'Hello, world!' =`RogjbP
g<C_3ap/
{Up@\M
SNOBOL Ay?KE{Qs '
OUTPUT = "Hello, world!" B \?We\y
END c@H_f
;',hwo_LBf
7{<:g!
SQL #E35%7*
create table MESSAGE (TEXT char(15)); .m--#r
insert into MESSAGE (TEXT) values ('Hello, world!'); !6y<