“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。 >
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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》。 Cq"KKuf
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以下是用不同语言写成的Hello World程序的几个例子: R2gV(L(!!
Ada U~N7\Pa4
with Ada.Text_Io; use Ada.Text_Io; <"J]u@|
procedure Hello is ]mb8R:a1
begin U8w_C\Q
Put_Line ("Hello, world!"); E5d$n*A
end Hello; *q*3SP/
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汇编语言 :q]9F4im
r8Mx+r
x86 CPU,DOS,TASM fq]PKLW'
MODEL SMALL RhH1nf2UR
IDEAL S@FO&o 0
STACK 100H o)/Pr7Qn
4=xi)qF/@
DATASEG kkF)Tro\
HW DB 'Hello, world!$' <4"-tYa
La;G S
CODESEG Aw |;C
MOV AX, @data }OL"38P
MOV DS, AX `t&{^ a&Y"
MOV DX, OFFSET HW @#)` -]g
MOV AH, 09H "y,YC M`
INT 21H Xq*^6*E-}
MOV AX, 4C00H /Hyz]46
INT 21H ^Tm`motzh
END Ki\.w~Qs
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x86 CPU,GNU/Linux,NASM /|1p7{km
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). DK)W
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;Enter this into "hello.asm" then type: !hBpon
;"nasm -f elf hello.asm" jO-?t9^
;"ld hello.o -o hello" @h%V:c
;"./hello" 4VWk/HK-!
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section .data ;data section declaration RZm%4_p4s
msg db 'Hello World!',0AH [@vz0!@s5
len equ $-msg ;string length NQk aW)
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section .text ;code section declaration zTF{ g+
global _start ;entry point (start of execution) O?JJE8~']
_start: mov edx,len ;string length NXU:b"G
S
mov ecx,msg ;string start V&M*,#(?
mov ebx,1 ;file handle: stdout 3'0Pl8
mov eax,4 ;sys_write _rT\?//B
int 80h ;kernel system call CubQ6@,
.$qa?$@
mov ebx,0 ;return value G<;~nAo?f0
mov eax,1 ;sys_exit Ymk?@mV4
int 80h ;kernel system call Gt9$hB7
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x86 CPU,Windows,MASM32 r~t`H*C)}
.386 jxh:z
.model flat,stdcall WQK<z!W5
option casemap:none q@|+`>h
;Include 文件定义 {^VtD
include windows.inc W$rWg>4>
include user32.inc ~RhUg~o
includelib user32.lib #jQauO
include kernel32.inc J7+G"_)'
includelib kernel32.lib +I3jI <
;数据段 :v&[!
.data SS=<\q#MS
szCaption db 'A MessageBox!',0 >cu%C s=m
szText db 'Hello,world!',0 KP&+fDa
;代码段 { mi}3/
.code SB_Tzp
start: {PHH1dC{
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK J D\tt-
invoke ExitProcess,NULL tE7jTe
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> m&UP@hUV-
end start z M9#1^X
=)[m[@,c
=q4}(
AWK rFRcK>X\L
BEGIN { print "Hello, world!" } Kc MzY
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BASIC [GLH8R
传统版BASIC(例如GWBASIC): 25Dl4<-Z
~MC|
10 PRINT "Hello, world!" k ut=(;
20 END ZZw`8 E
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或在提示符输入: 8+zW:0"[
3db{Tcn\@]
?"Hello, world!":END w?Te%/s.
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现代版BASIC(例如Quick BASIC): LW %AZkAx
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Print "Hello, world!" {%V(Dd[B6
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以下的语句在Quick BASIC中同样有效: DBT4 W/
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? "Hello,world!" =kjKK
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BCPL 067c/c
GET "LIBHDR" _Cmmx`ln
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LET START () BE L$ZjMJ
$( yk+ 50/L
WRITES ("Hello, world!*N") 88g3<&
$) i]JTKL{\q
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S*h52li
Befunge ?bTfQH
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"!dlrow olleH">v jh5QIZf=
, NVyBEAoh
^_@ w_9^YO!!
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Brainfuck #lYyL`B+~
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< P*|N)S)X%
+++++++++++++++.>.+++.------.--------.>+.>. q!Du
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C LCF}Y{
#include <stdio.h> _:x]'w%
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int main(void) Ss3p6%V/
{ Wn%P.`o#
printf("Hello, world!\n"); =%Y1] F
return 0; L\:|95Yq
} 5ut| eD`3
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w^yb`\$
C++ aukcO;oG<
#include <iostream> tpfgUZ{
Z}W{ iD{
int main() fr17|#L+s
{ ( }-*irSsj
std::cout << "Hello, world!" << std::endl; HiCh:IP7>/
return 0; EX8JlA\-W
} %I1@{>OxG
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inP2y ?j
C++/CLI c[dSO(=
int main() gf|uZ9{
{ u'YXI="(
System::Console::WriteLine("Hello, world!"); |z-f8$
} Y:^hd809
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C# (C Sharp) P/%7kD@5;
class HelloWorldApp 6h 0qtXn-
{ FO!Td
public static void Main() A*JOp8\)
{ /{T&l*'
System.Console.WriteLine("Hello, world!"); iaGA9l<b
} 6$u/N gS
} wu
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%(CC
COBOL f56yI]*N=<
IDENTIFICATION DIVISION. Jo? LPR
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PROGRAM-ID. HELLO-WORLD. VB |?S|<
%hB-$nE
ENVIRONMENT DIVISION. l.Q
-amo8V;2H
DATA DIVISION. \)PB p
v{u3[c
PROCEDURE DIVISION. Z8v\>@?5R
DISPLAY "Hello, world!". c&['T+X
STOP RUN. c_/BS n
5Rbl.5.A
FP@_V-
Common Lisp N$fP\h^AR
(format t "Hello world!~%") 'gwh:
T:^.; ZY
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DOS批处理 -(vHy/Hz.
@echo off )nUdU
= m
echo "Hello, world!" _c5@)I~
[2:d@=%.
ZO+RE7f*?c
Eiffel SN6 QX!3
class HELLO_WORLD Ly=.
A95f!a
creation
Xdvd\H=
make ;jPsS^X
feature 2&6D`{"P
make is TTf
j5
local NdK`-RT
io:BASIC_IO (,At5T
do w,%"+tY_
!!io ,NO[Piok
io.put_string("%N Hello, world!") ^ u$gO3D
end -- make Bm~^d7;Cw
end -- class HELLO_WORLD mnt&!X4<
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GM|&,}
Erlang ?QP>rm
-module(hello). YwVA].p@TI
-export([hello_world/0]). Xo PJ?63
vo/x`F'ib
hello_world() -> io:fwrite("Hello, World!\n"). pY&6p~\p
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#}A"yo
Forth ={g"cx
." Hello, world!" CR Et6j6gmif
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Fortran D+T/ Z)
WRITE(*,10) G|cjI*
10 FORMAT('Hello, World!') uQ=u@qtp
STOP Ar-Vu{`
END FPc`J
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HTML `zoHgn7B9q
<HTML> c |0p'EQ
<HEAD> (Mv~0ShakO
<TITLE> Hello World! </TITLE> 6 (rm%c
</HEAD> 8\J$\Edv
<BODY> ju2H0AQ
<p>Hello World!</p> ZayJllaq^
</BODY> |Iy;_8c
</HTML> h;=~%2Y
F:zmO5L5
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HQ9+ )U/Kz1U
H *r.%/^@
>s<Bu' r
N8]DzE0%
INTERCAL [I;C6p
PLEASE DO ,1 <- #13 U|wST&rU|
DO ,1 SUB #1 <- #238 jV%
VN
DO ,1 SUB #2 <- #112 4s{=/,f
DO ,1 SUB #3 <- #112 {OG1' m6=/
DO ,1 SUB #4 <- #0 gs<~)&x
DO ,1 SUB #5 <- #64 nJ2B*(S'v.
DO ,1 SUB #6 <- #238 m mF0RNE
DO ,1 SUB #7 <- #26 p39$V[*g(
DO ,1 SUB #8 <- #248 wOH:'sk["
DO ,1 SUB #9 <- #168 Q g/Rw4[
DO ,1 SUB #10 <- #24 gj|5"'g%
DO ,1 SUB #11 <- #16 B4 bB`r
DO ,1 SUB #12 <- #158 mJ%^`mrI
DO ,1 SUB #13 <- #52 <*vR_?!
PLEASE READ OUT ,1 F`KXG$
PLEASE GIVE UP KKwM\
VjM/'V5
JCH9~n.
Java vhZXgp0X
public class Hello x@X2r
{ h<L_ =)lH
public static void main(String[] args) o0WwlmB5
{ hUpour
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System.out.println("Hello, world!"); "]3o933D
} zE;|MU@|
} BMq> Cj+
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TY/'E#.
JSP Pk&=\i<
<% -.Wwo(4
out.print("Hello, world!"); drpx"d[c
%> =LGM[Z3$s
"9s}1C; Me
x~k3kj
MIXAL ESviWCh0Fl
TERM EQU 19 the MIX console device number JbEEI(Q>g
ORIG 1000 start address c,#=In2
START OUT MSG(TERM) output data at address MSG `*[Kmb\
HLT halt execution oW
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MSG ALF "MIXAL" !I|_vJ@<
ALF " HELL" I484cR2.
ALF "O WOR" 5VE=Oo#&
ALF "LD " Tkr~)2,(I!
END START end of the program lP=,|xFra
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Nuva xM{[~Kh_x
<..直接输出..> ,7$&gx>2&
Hello, world! }S"gZ6
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<..或者..> >'n[B
AK
lra$
<. Z/Wf
// 不带换行 |Ja5O
? "Hello, world!" qo:Zc`t(R
{^
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// 或者 zEjl@Kf
ys!O"=OJ
// 带换行 Dhm;K$T
?? 'Hello, world!' N9ipw r'P
.> u/k'
ry=
NXLb'mH~
E 9Kp=3H
OCaml iTevl>p!
let main () = ipG 0ie+
print_endline "Hello world!";; g3s5ra[
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Pascal ((?"2 }1r
program Hello; =H: N!!:
begin Obu 6k[BE.
writeln('Hello, world!'); =2*2$
end. _e8Gt6>
P:J|![
} A6z%|d
Perl G;u 6p
#!/usr/local/bin/perl 3]iw3M
print "Hello, world!\n"; f7zB_hVDmE
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g[y&GCKY!=
PHP lhQMR(w^
<?php Nnn~7
print("Hello, world!"); ,nog6\
?> bs}SFT L
Rhlm
U4Zx1ieCKH
Pike HI1|~hOb'
#!/usr/local/bin/pike /g0' +DP
int main() <bn|ni|c"
{ a^G>|+8
write("Hello, world!\n"); .`*(#9(M9
return 0; )%9:k9
} H [M:iV
gdAd7
T
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PL/I I+Y Z+
Test: procedure options(main); WCaMPz
declare My_String char(20) varying initialize('Hello, world!'); 6wOj,}2Mn
put skip list(My_String); ui"`c%2n
end Test; @Nm{H
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LvGo$f/9
Prolog "tb KbFn9
goal P;7[5HFF
write("hello,world!"). od@!WjcM[8
* W"Pv,:
aA%x9\Y
Python qU&v50n
#!/usr/local/bin/python 3]\'Q}
print "Hello, world!" J>hjIN
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6."|m+D
REXX R4D$)D
say "Hello, world!" ~urk
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?iaO+G&|
Ruby !!6@r|.
#!/usr/bin/ruby `^g-2~
print "Hello, world!\n" 0p,_?3nX
J,h'eY5
5OTZa>H
Scheme pNHL &H\
(display "Hello, world!") #VZ-gy4$\B
(newline) .i7"qq.M
;M+~e~
Q>z(!'dw
sed (需要至少一行输入) -hK^ *vJ
sed -ne '1s/.*/Hello, world!/p' wO%617Av
SQ/}K8uZ
G{+zKs}~
Smalltalk gYpFF=7j<@
Transcript show: 'Hello, world!' :p1_ij]ND
Oxi^&f||`
AAi4}
8+\
SNOBOL j;_E0j#
OUTPUT = "Hello, world!" 1"l48NL L|
END XU['lr&,W
;F2"gTQS
r"7 !J[u
SQL >'3nsR
create table MESSAGE (TEXT char(15)); x` 4|^u
insert into MESSAGE (TEXT) values ('Hello, world!'); 4{$ L]toP
select TEXT from MESSAGE; 43`Atw`\
drop table MESSAGE; ;P8.U(
YRaF@?^Gn
2 I.Q-'@
Tcl Q9g^'a
#!/usr/local/bin/tcl BgsU:eKe
puts "Hello, world!" Mf9x=K9
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e9F+R@8
TScript ypvz&SzIh
? "Hello, world!"
/p|L.&`U
!'bZ|j%
m*AiP]Qu
Turing `b)i;m
put "Hello, world!" bz\nCfU
H9=8nLb.
Q-e(>=Gv_
UNIX-style shell g s%[Cv
程序中的/bin/sh可改为您使用的shell @ +>>TGC
:Q;mgHTNz
#!/bin/sh hC!8-uBK5<
echo 'Hello, world!' m4 c2WY6k
vf!lhV-UG+
YQ-V^e6
GUI S2V+%Z
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Delphi ZjgfkZAS
program HelloWorld; r#mH[|@W~
uses K
&G
Dialogs; #!jwn^yq
begin a/~1CrYr
ShowMessage('Hello, World!'); 2Gc0pBqx
end. RbEtNwG@c
na|23jz4
K!tM "`a
Nuva 5BM rn0
<. D'
h%.
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) X$<CIZ
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