“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。 ThxrhQ
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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》。 ho1F8TG=
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以下是用不同语言写成的Hello World程序的几个例子: Q6K)EwN
Ada U\ued=H
with Ada.Text_Io; use Ada.Text_Io; F
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procedure Hello is R=PzR;8
begin ^ne8~
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Put_Line ("Hello, world!"); 7,TWCVap
end Hello; ~|rkt`8p
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汇编语言 0, /x#
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x86 CPU,DOS,TASM kdCOcJB
MODEL SMALL Be+:-t)
IDEAL \0h/~3
STACK 100H kP$gl|
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DATASEG kg@h R}
HW DB 'Hello, world!$' [JoTWouNU
WFP\;(YV
CODESEG cAS_?"V
a
MOV AX, @data 0K ?(xB
MOV DS, AX YHYB.H)
MOV DX, OFFSET HW Ef.4.iDJrR
MOV AH, 09H lWvd"Vlt
INT 21H "zbE
MOV AX, 4C00H Gq/6{eRo\
INT 21H l{9h8]^
END tHbPd.^
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x86 CPU,GNU/Linux,NASM de9l;zF
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). |`wsKr'
;Enter this into "hello.asm" then type: 7-I>53@
;"nasm -f elf hello.asm" VU9P\|c@<
;"ld hello.o -o hello" Cw $^w
;"./hello" \F~Cbj+'Nu
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section .data ;data section declaration cg00t+
msg db 'Hello World!',0AH YS~t d+*
len equ $-msg ;string length 9Z'eBp
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section .text ;code section declaration PU5mz.&0'
global _start ;entry point (start of execution) A@(h!Cq
_start: mov edx,len ;string length T+R I8.#o
mov ecx,msg ;string start
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mov ebx,1 ;file handle: stdout \_nmfTr!K
mov eax,4 ;sys_write ?4e6w
int 80h ;kernel system call mthl?,I|
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mov ebx,0 ;return value ;bZ*6-\!-
mov eax,1 ;sys_exit 1Uk~m
int 80h ;kernel system call JyC&L6[]Z
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x86 CPU,Windows,MASM32 c8tC3CrKp=
.386 h;qy5KS
.model flat,stdcall ?7)(qnbe"
option casemap:none R2THL
;Include 文件定义 Wx$q:$h@q
include windows.inc FJ8@b
include user32.inc BK9x`Oo 2
includelib user32.lib '<< ~wt
include kernel32.inc Uy5 !H1u
includelib kernel32.lib %@n8
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;数据段 ir:~*|
.data _G #"B{7
szCaption db 'A MessageBox!',0 ;+34g6
szText db 'Hello,world!',0 ^z}lGu
;代码段 ~49N
.code /I'u/{KB
start: `(/saq*
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK e>9Z:vY
invoke ExitProcess,NULL Yc`j
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <3=qLm
end start NLZZMr
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AWK W^.-C
BEGIN { print "Hello, world!" } ^7bf8 ^`
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BASIC !{tiTA
传统版BASIC(例如GWBASIC): )9L pX
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10 PRINT "Hello, world!" lkH;N<U
20 END `k]!6osZo
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或在提示符输入: }?]yxa ~
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?"Hello, world!":END br;H8-
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现代版BASIC(例如Quick BASIC): 7k=F6k0)
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Print "Hello, world!" MiH}VfI
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以下的语句在Quick BASIC中同样有效: @D~+D@i$TW
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? "Hello,world!" 9/1+BQ
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BCPL J4v0O="
GET "LIBHDR" Th^(f@.w
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LET START () BE guOSO@
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WRITES ("Hello, world!*N") ,{{#a*nd
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Befunge -*%!q$:
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Brainfuck =^Sw*[eiy
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+++++++++++++++.>.+++.------.--------.>+.>. u-QO>3oY6
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#include <stdio.h> o)#q9Vk%b
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int main(void) i#RElH
{ P}hY{y'
printf("Hello, world!\n"); w3<"g&n|
return 0; ~mK-8U4>K,
} +~
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C++ UW hn1N
#include <iostream> J1tzHa6
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int main() Y@]);MyL
{ V~T`&
std::cout << "Hello, world!" << std::endl; 9^PRX
return 0; *Mwfod
} #dZ/UM(u
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C++/CLI &nqdl+|G*
int main() uNe}"hs
{ qDRNtFa
System::Console::WriteLine("Hello, world!"); \D,M2vC~G
} QB/7/PW{H\
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C# (C Sharp) r(:
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class HelloWorldApp
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{ /v"6BU
public static void Main() ls"b#eFC#
{ %2Epgh4?
System.Console.WriteLine("Hello, world!"); e&$p-0DmT|
} >f\zCT%cf
} -BA"3 S
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COBOL B2~f;zy`
IDENTIFICATION DIVISION. h; 'W :P
PROGRAM-ID. HELLO-WORLD. L$1K7<i.
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ENVIRONMENT DIVISION. m~u|VgD
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DATA DIVISION. 50LHF%
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PROCEDURE DIVISION. )=jT_?9b
DISPLAY "Hello, world!". CAUijMI@
STOP RUN. T8$%9&j!UE
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Common Lisp })20Zld}a
(format t "Hello world!~%")
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DOS批处理 5<89Af&&K8
@echo off cMD RWh
echo "Hello, world!" Ia=_78MgZ
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Eiffel ?}vzLgp
class HELLO_WORLD Z)mX,=p
v9%nau4
creation yp=|7
make pC*BA<?Rg
feature ^ED"rMI
make is Bk@)b`WR
local !|B3i_n
io:BASIC_IO u3 ]Uxy
do br0u@G
!!io p?Ed-
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io.put_string("%N Hello, world!") sFLcOPj-%
end -- make B?SNea,I4
end -- class HELLO_WORLD k}D[Hp:m
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Erlang 1g1? zk8zO
-module(hello). 4P|$LkI
-export([hello_world/0]). G%a] j
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hello_world() -> io:fwrite("Hello, World!\n"). pd d|n2q
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Forth :.#z
." Hello, world!" CR "YJ[$TG
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Fortran /D0RC
WRITE(*,10) 8;TAb.r
10 FORMAT('Hello, World!') t)9]<pN%
STOP [s~JceUyX
END )ZGYhE
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HTML "Y7+{
<HTML> {AOG"T&<
<HEAD> f'&GFL=c
<TITLE> Hello World! </TITLE> YMT8p\#rp
</HEAD> ^IBGYl5n
<BODY> "OO96F
<p>Hello World!</p> U^[<
</BODY> %y>+1hakkX
</HTML> =_[2n?9y
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INTERCAL GM](=|F
PLEASE DO ,1 <- #13 s`"O M^[-
DO ,1 SUB #1 <- #238 1Ao6y.S
DO ,1 SUB #2 <- #112 jyiFM5&
DO ,1 SUB #3 <- #112 1HhX/fpq
DO ,1 SUB #4 <- #0 ]ni6p&b>
DO ,1 SUB #5 <- #64 )\wuesAO
DO ,1 SUB #6 <- #238 abBO93f^
DO ,1 SUB #7 <- #26 @lS==O-`f
DO ,1 SUB #8 <- #248 _#!U"hkH
DO ,1 SUB #9 <- #168 7R,qDp S
DO ,1 SUB #10 <- #24 OUzR@$
DO ,1 SUB #11 <- #16 i^*M^P3m
DO ,1 SUB #12 <- #158 /s:w^g~
DO ,1 SUB #13 <- #52 n#BvW,6J
PLEASE READ OUT ,1 IU|kNBo
PLEASE GIVE UP 2Z)4(,
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Java oV9z(!X/
public class Hello 03EV%Vc
{ |jT2W
public static void main(String[] args) %x2uP9
{ n!G.At'JP
System.out.println("Hello, world!"); |O-`5_z$r
} w9f
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} hGI+:Js6
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JSP 1a$IrQE
<% :=<0=JE#
out.print("Hello, world!"); }_}KVI
%> t0Zk-/s
BC! 6O/kr
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MIXAL hv>KX
TERM EQU 19 the MIX console device number dv~pddOs
ORIG 1000 start address H_w%'v &
START OUT MSG(TERM) output data at address MSG v^SsoX>WMH
HLT halt execution ?^9BMQ+
MSG ALF "MIXAL" R4{-Qv#8
q
ALF " HELL" E1 |<Pt
ALF "O WOR" "_< 9PM1t
ALF "LD " 8[zb{PRu
END START end of the program cJDd0(tD!
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<..直接输出..> F2;:vTA>
Hello, world! OQp, 3M{_
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<..或者..> FI"HJwAs
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<. =gjDCx$|
// 不带换行 53Yxz3v
? "Hello, world!" yK1ie
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// 或者 _?`&JF