“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。 dy2rkV.z
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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》。 <*<U!J-i
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以下是用不同语言写成的Hello World程序的几个例子: ^/toz).Q
Ada v*z(@<Y
with Ada.Text_Io; use Ada.Text_Io; )#C
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procedure Hello is NLyXBV[hV
begin w_Uh
Put_Line ("Hello, world!"); o5!f#Y
end Hello; +Rwx%=
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汇编语言 iidT~l
bMm3F%FFq&
x86 CPU,DOS,TASM MzkkcQLK
MODEL SMALL M:n 6BC>t"
IDEAL ab.tH$:<
STACK 100H QM'X@
fDh]tua
DATASEG 1/;o
HW DB 'Hello, world!$' 8Lz]Z
h=ZU
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CODESEG tU@zhGb
MOV AX, @data j}f[W [2
MOV DS, AX ^YlI>_3s
MOV DX, OFFSET HW QJGKQ2^ n
MOV AH, 09H ?X9UTOx
INT 21H 86
.`T l;
MOV AX, 4C00H A m"(+>W21
INT 21H 7TX2&kMoc
END nh.32q]
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h8{(KRa 6
x86 CPU,GNU/Linux,NASM {tiKH=&J
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). -_N)E ))G
;Enter this into "hello.asm" then type: k N7Bd}
;"nasm -f elf hello.asm" )[Z!*a m
;"ld hello.o -o hello" iE].&>w
;"./hello" !t#F/C
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section .data ;data section declaration 12UD19!
msg db 'Hello World!',0AH 8LzBh_J?
len equ $-msg ;string length WXw}^v
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section .text ;code section declaration $IQw=w7p
global _start ;entry point (start of execution) i3$$,W!
_start: mov edx,len ;string length O`[aU%4b
mov ecx,msg ;string start T{v>-xBRy
mov ebx,1 ;file handle: stdout a_~=#]a
mov eax,4 ;sys_write 6%G-Vs]*2
int 80h ;kernel system call p4!:]0c
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mov ebx,0 ;return value ]=pR
mov eax,1 ;sys_exit WJH\~<{mP
int 80h ;kernel system call yLE7>48
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x86 CPU,Windows,MASM32 4<dcB@v
.386 H,unpZ(
.model flat,stdcall i%m"@7.kk
option casemap:none Pz*_)N}j >
;Include 文件定义 "*1f;+\
include windows.inc b?X.U}62_
include user32.inc bNs4 5hDP
includelib user32.lib pKiZ)3U
include kernel32.inc )Z 9E=%
includelib kernel32.lib f5AjJYq1
;数据段 E>'a,!QPv
.data >{gPN"S"a
szCaption db 'A MessageBox!',0 ?'86d_8
szText db 'Hello,world!',0 @hQlrq5c
;代码段 fWfk[(M'9
.code &s Pq<l o
start: jp8@vdRg
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK M5nWVK7c
invoke ExitProcess,NULL ^bg2[FV
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> DI+]D~N
end start {'?)FX*W
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BEGIN { print "Hello, world!" } MYJg8 '[j
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BASIC j
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传统版BASIC(例如GWBASIC): Ya>oCr}K
(" LQll9
10 PRINT "Hello, world!" qmO6,T-|
20 END +fvaUV_-
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或在提示符输入: _^Mx>hb4.
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?"Hello, world!":END S*j6OwZ
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现代版BASIC(例如Quick BASIC): 9Gv[8'I
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Print "Hello, world!" ;"(foY"L
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以下的语句在Quick BASIC中同样有效: T,|
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? "Hello,world!" UnI48Y
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WB
BCPL ,-7R(iMd
GET "LIBHDR" Yjx|9_|Xn
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LET START () BE N[k wO1
$( ^]{R.(#z
WRITES ("Hello, world!*N") dtp oU&?6s
$) v|U(+O
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#1>X58I^
Befunge R: l&2k@
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, ],P;WPU
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+++++++++++++++.>.+++.------.--------.>+.>. dd]/.Z
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C lbpq_=
#include <stdio.h> -wjN"g<
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int main(void) L'u\w
{ jYe'V#5S#
printf("Hello, world!\n"); Z:*76PP,
return 0; [Nk3|u`h
} l g-X:Z.
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C++ Cvf[/C+
#include <iostream> B#M5}QT|2
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int main() ?#45wC
{ 7Zh~lM
std::cout << "Hello, world!" << std::endl; R;j!}D!4
return 0; e:5bzk!~
} xftBSdVE
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C++/CLI ~x|F)~:0=
int main() uH(f$A
{ s{$(*_
System::Console::WriteLine("Hello, world!"); N|6MP
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} 8@tPm$
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C# (C Sharp) 7:2WgLo
class HelloWorldApp fP.
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{ zR{W?_cV
public static void Main() aXoVy&x=
{ jJ5W>Q1mK$
System.Console.WriteLine("Hello, world!"); K|Di1)7=/
} oomT)gO 6*
} 4B^ZnFJ%m
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COBOL aL&n[
IDENTIFICATION DIVISION. FGoy8+nB1M
PROGRAM-ID. HELLO-WORLD. _iir<}
zlEX+=3
ENVIRONMENT DIVISION. v^1pN>#%g
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DATA DIVISION. r_-_a(1R:
{PVW D7
PROCEDURE DIVISION. kYjGj,m"
DISPLAY "Hello, world!". |%'
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STOP RUN. , T8>}U(
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Common Lisp [@5Ytv H
(format t "Hello world!~%") ;<(W% _
sk=-M8;\
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DOS批处理 H kQ)n3
@echo off /so8WRu.
echo "Hello, world!" (G[
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Eiffel dF2nEaN0%
class HELLO_WORLD 4x 8)gE
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creation /!3@]xz*
make PEW=@xj2y
feature 'LE=6{#
make is }n4V|f-
local LILQ\I<<'
io:BASIC_IO #g]vc_V
do 3 U7*>H
!!io T>NDSami
io.put_string("%N Hello, world!") j4^9 7
end -- make !;KCU^9
end -- class HELLO_WORLD ;,?KI$K
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Erlang j4cwI90=
-module(hello). 2(#7[mgPI
-export([hello_world/0]). .~l=zu
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hello_world() -> io:fwrite("Hello, World!\n"). a_'2V;
//s:5S<Z
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Forth SUU !7Yd|
." Hello, world!" CR N _86t
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Fortran 6jC`8l:
WRITE(*,10) ]zWon~
10 FORMAT('Hello, World!') 4X+ifZO
STOP Y07ZB'K
END pUV/Ul]
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P_Gw-`L5T
HTML RT.D"WvT
<HTML> -UOj>{-
<HEAD> "O%gFye
<TITLE> Hello World! </TITLE> MP4z-4Y
</HEAD> !BOY@$Y
<BODY> %)0*&a 4
<p>Hello World!</p> Fd[zDz
</BODY> jhb6T ?}
</HTML> qa0 yg8,<
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INTERCAL <U!`J[n%
PLEASE DO ,1 <- #13 4Za7^c.
DO ,1 SUB #1 <- #238 8&)DE@W
DO ,1 SUB #2 <- #112 WRrd'{sB
DO ,1 SUB #3 <- #112 vJ-q*qM1
DO ,1 SUB #4 <- #0 k{Me[B
DO ,1 SUB #5 <- #64 >o7n+Rb:
DO ,1 SUB #6 <- #238 rjp-Fw~1w
DO ,1 SUB #7 <- #26 X;"Sx#U
DO ,1 SUB #8 <- #248 iC98_o_9
DO ,1 SUB #9 <- #168 2-C!jAfd
DO ,1 SUB #10 <- #24 wv\w;'
DO ,1 SUB #11 <- #16 C'o64+W^
DO ,1 SUB #12 <- #158 Zw ^kmSL"
DO ,1 SUB #13 <- #52 =[@zF9
PLEASE READ OUT ,1 oaoU _V
PLEASE GIVE UP / ;,Md,p
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M>i9 i-dU
Java >76\nGO
public class Hello \4-"L>
{ OeS\7
public static void main(String[] args)
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{ o!{w"K
System.out.println("Hello, world!"); 2M68CE
} 7]||UuF<
} S'_-G;g.
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JSP Pl"Nus
<% s0k`p<q
out.print("Hello, world!"); d\
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%> qT`k*i?
:F{:Z*Fi0
;I}kQ!q
MIXAL |!"`MIw,
TERM EQU 19 the MIX console device number 06N}k<10O
ORIG 1000 start address !,Va(E|=
START OUT MSG(TERM) output data at address MSG 83Q4On
HLT halt execution (+FfB"3]
MSG ALF "MIXAL" %|oJ>+
ALF " HELL" k|lcc^[0
ALF "O WOR" }DK7'K
ALF "LD " :=/>Vbd: )
END START end of the program T
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<..直接输出..> |,!IZ-
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Hello, world! Ux}(?Z
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<..或者..> f,:9N 5Z
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// 不带换行 >V*mr{/1
? "Hello, world!"
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// 或者 ]A<~XIu
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// 带换行 }Hxd*S
?? 'Hello, world!' 4bn(zyP
.> HY%i`]4X
~R2 6
p%R
OCaml kT'u1q$3Vo
let main () = elFtBnL'
print_endline "Hello world!";; */|9= $54
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#~l(]h@
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Pascal p~,]*y:XT
program Hello; kAC&S!n
begin (r D_(%o
writeln('Hello, world!'); yGPS`S
end. ^]a #7/]o
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Perl ek}a}.3 {
#!/usr/local/bin/perl zOa_X~!@
print "Hello, world!\n"; 9)gC6IiW
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)Hk3A$6(
PHP eK!V
);
<?php IuRmEL_Q_
print("Hello, world!"); y10h#&k
?> ~ y;6W0x
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Pike 0 SNIYkGE
#!/usr/local/bin/pike I{*<