“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。 \.c
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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》。 gA0:qEL\
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以下是用不同语言写成的Hello World程序的几个例子: ' S%?&4
Ada O$d z=)
with Ada.Text_Io; use Ada.Text_Io; D@9adwQb
procedure Hello is QWL$F:9:
begin 5>z`==N)
Put_Line ("Hello, world!"); :x"Q[079
end Hello; S ]_iobWK
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汇编语言 F@ Sw
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x86 CPU,DOS,TASM sfb)iH|sW
MODEL SMALL
W=zHD9
IDEAL {D6lSj
STACK 100H tzH~[n,
N]yh8"7X
DATASEG 62L,/?`B$
HW DB 'Hello, world!$' {yXpBS
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CODESEG p./9^S
MOV AX, @data jU~q~e7Te
MOV DS, AX ] (%EQ[
MOV DX, OFFSET HW fXo$1!
MOV AH, 09H =r1-M.*a.M
INT 21H b!lS=zIN
MOV AX, 4C00H iX]tL:,~i
INT 21H 1}=@';cK*
END @Z}TF/Rx4
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x86 CPU,GNU/Linux,NASM LH_VdLds
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). j Wpm"C
;Enter this into "hello.asm" then type: ~<Eu
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;"nasm -f elf hello.asm" &9j*Y
;"ld hello.o -o hello" 3Gk\3iU!
;"./hello" h^ o@=%b
J 2H$ALl
section .data ;data section declaration oy[>`qyz
msg db 'Hello World!',0AH 4:Ton
len equ $-msg ;string length s~i73Qk/
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section .text ;code section declaration (&o|}"kRq
global _start ;entry point (start of execution) ?1afW)`a.v
_start: mov edx,len ;string length 0bz':M#k &
mov ecx,msg ;string start Q8h0:Q
mov ebx,1 ;file handle: stdout /mK."5-cm
mov eax,4 ;sys_write )B$Uo,1
int 80h ;kernel system call '.gLqm}%
xofxE4.
mov ebx,0 ;return value `ElJL{Rn
mov eax,1 ;sys_exit G=(ja?d
int 80h ;kernel system call Y 8Dn&W
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x86 CPU,Windows,MASM32 -/ YY.F-
.386 -n"7G%$M
.model flat,stdcall fG"4\A
option casemap:none .VA'W16
;Include 文件定义 -Pp =)_O
include windows.inc Yu+;vjbK-
include user32.inc SO+J5,)HA
includelib user32.lib <Kk[^.7C;
include kernel32.inc WR zIK09@
includelib kernel32.lib __Egr@
;数据段 tSX,*cz
.data Uqd2{fji=#
szCaption db 'A MessageBox!',0 j"Z9}F@
szText db 'Hello,world!',0 82P#C4c+d
;代码段 WNp-V02l
.code F7&Oc)f"B
start: 7Um3myXU
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 2>F`H7W
invoke ExitProcess,NULL k/m-jm_h
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >jRH<|Az
end start UNCI"Mjb
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AWK C<E;f]d
BEGIN { print "Hello, world!" } *n*po.Xr
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BASIC l~#%j( Yo
传统版BASIC(例如GWBASIC): "%dok@v
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10 PRINT "Hello, world!" FQBAt0
20 END +8 }p-<a
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或在提示符输入: %&&;06GU}
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?"Hello, world!":END 7b
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现代版BASIC(例如Quick BASIC): )(DX]Tr`
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Print "Hello, world!" m ol|E={si
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以下的语句在Quick BASIC中同样有效: !^IAn
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? "Hello,world!" :M\3.7q
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BCPL :=2l1Y[-G
GET "LIBHDR" *K=Yrisz
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LET START () BE zf?U q
$( )kt,E}609
WRITES ("Hello, world!*N") )" H r3
$) DtOL=m]s
DS>qth
&/{x7;e
Befunge J/ZC<dkYQ
"!dlrow olleH">v PP!}w
, rEY5,'?YHv
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Brainfuck vw/X
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< &&sCaNb
+++++++++++++++.>.+++.------.--------.>+.>. >
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C "|%'/p
#include <stdio.h> V8IEfU
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int main(void) -?PXj)<
{ :Tn1]a)f6
printf("Hello, world!\n"); Ilv
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return 0; F<|x_6a\
} riY[p,
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C++ ["
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#include <iostream> Fc.1)yh.
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int main() )\|Bghui
{ )1 =|\
std::cout << "Hello, world!" << std::endl; us3fBY'
return 0; N77EM
} X/-u$c
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C++/CLI #+6t|
int main() _
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{ Nw|m"VLb
System::Console::WriteLine("Hello, world!"); }~3 %KHT
} K_t!P
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C# (C Sharp) 7n*[r*$
class HelloWorldApp O]N
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{ kEpCF:@A
public static void Main() #(Ah>y
{ %?~`'vYoi
System.Console.WriteLine("Hello, world!"); PDH00(#;+
} s0bWg$
} c<n <!!vi
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COBOL f*Dy>sw
IDENTIFICATION DIVISION. UM QsYD)
PROGRAM-ID. HELLO-WORLD. r7=r~3)
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ENVIRONMENT DIVISION. M4m90C;dq
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DATA DIVISION. U)g27*7
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PROCEDURE DIVISION. 5gnmRd
DISPLAY "Hello, world!". ,@]rvI6x
STOP RUN. fR6.:7&
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Common Lisp A]k-bX= s
(format t "Hello world!~%") 9V5d=^
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DOS批处理 fX[6
{
@echo off KqH_?r`
echo "Hello, world!" WMw]W&
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Eiffel Q
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class HELLO_WORLD k_}aiHdG
w2/3\3p
creation h72#AN
make #=* y7w
feature Qso"jYl<
make is }F~4+4B^
local ZC\&n4~7
io:BASIC_IO 7^|,l
do Cm5:_K`;]
!!io 9gLUM$Kd
io.put_string("%N Hello, world!") zu@5,AH
end -- make H^<LnYZ
end -- class HELLO_WORLD m)aNuQvy:Z
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Erlang :jc
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-module(hello). apxY2oE&
-export([hello_world/0]). lwU$*?yv
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hello_world() -> io:fwrite("Hello, World!\n"). ,py:e>+^t
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M#PutrH
Forth K3WhF
." Hello, world!" CR v_$'!i$
c-a he;q
!k= ~5)x
Fortran w>q:&Q
WRITE(*,10) W]t!I}yPR
10 FORMAT('Hello, World!') z+Cw*v\Y
STOP \ tK{!v+
END mimJ_=]DC
wLDWD,"K
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HTML [=
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<HTML> 2KUm(B.I
<HEAD> ia!b0*<
<TITLE> Hello World! </TITLE>
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</HEAD> @4'bI)
<BODY> x'.OLXx>
<p>Hello World!</p> "XU
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</BODY> ZDI%?.U
</HTML> ;0R>D g
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t#Q" ;e
INTERCAL
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PLEASE DO ,1 <- #13 mv,<#<-W
DO ,1 SUB #1 <- #238 h|MTE~
DO ,1 SUB #2 <- #112 h27awO
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DO ,1 SUB #3 <- #112 QEavbh^S
DO ,1 SUB #4 <- #0 Zj*kHjn"
DO ,1 SUB #5 <- #64 ]$StbBP
DO ,1 SUB #6 <- #238 ZwV`} 2{
DO ,1 SUB #7 <- #26 v[aFSXGj)
DO ,1 SUB #8 <- #248 b&y"[1`
DO ,1 SUB #9 <- #168 x}`]9XQ
DO ,1 SUB #10 <- #24 u]B15mT?
DO ,1 SUB #11 <- #16 nj (/It
DO ,1 SUB #12 <- #158 j A 9!
DO ,1 SUB #13 <- #52 T4O H,^J
PLEASE READ OUT ,1 7#
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PLEASE GIVE UP Bc/'LI.%
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Java Y\.ds%G
public class Hello cmzu
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{ ]kN<N0;\d
public static void main(String[] args) W;Rx(o>
{ eYER"E
System.out.println("Hello, world!"); m#D+Yh/y{n
} $#cZJ@;]
} pT90TcI2
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C+*qU
JSP t8"*jt
<% GwOn&EpY!
out.print("Hello, world!"); ad\?@>[I
%> !n=?H1@
>|)ia5#
.`iG}j)\
MIXAL UBmD
3|Zo
TERM EQU 19 the MIX console device number }@6/sg
ORIG 1000 start address ; bBz<
START OUT MSG(TERM) output data at address MSG gaK m`#
HLT halt execution KtT.WHr(m
MSG ALF "MIXAL" *h<=
(Y%
ALF " HELL" *^BW[C/CTR
ALF "O WOR" s`j QX\{
ALF "LD " m15MA.R>
END START end of the program A@8Ot-t:\2
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m=^`u:=
Nuva sr0.4VU1
<..直接输出..> 4%8}vCs
Hello, world! w/8`]q
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<..或者..> Q9(J$_:
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<. E8TJ*ZU
// 不带换行 hSxlj7Eo^T
? "Hello, world!" 6sRe. ct<