“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。 qfRsp
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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》。 X\\c=[#8-
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以下是用不同语言写成的Hello World程序的几个例子: 28/At
Ada s&>U-7fx"
with Ada.Text_Io; use Ada.Text_Io; %(f&).W
procedure Hello is ssf.ef$
begin 3&39M&
Put_Line ("Hello, world!"); l1<]pdLTR
end Hello; ]@Gw$
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汇编语言 Sbf+;:D
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x86 CPU,DOS,TASM -w>2!@8
MODEL SMALL ;M)l7f
IDEAL Qyh_o
STACK 100H u 2)#Ml
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DATASEG rMV<}C ^
HW DB 'Hello, world!$' n@`D:;?{
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CODESEG UW!*=?h
MOV AX, @data lWiC$
MOV DS, AX &CtWWKS"
MOV DX, OFFSET HW z}772hMB
MOV AH, 09H p\>im+0oh
INT 21H |sG@Ku7~4
MOV AX, 4C00H Bu%TTbnz_G
INT 21H /'yi!:FZFC
END @<n8?"{5S
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x86 CPU,GNU/Linux,NASM MQ~OG9.
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). n ]K`ofjl^
;Enter this into "hello.asm" then type: ~s$
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;"nasm -f elf hello.asm" E%+ aqA)f
;"ld hello.o -o hello" oU\Q|mN(
;"./hello" _^Ds[VAgA
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section .data ;data section declaration do-mkvk
msg db 'Hello World!',0AH oB BL7/L
len equ $-msg ;string length f@G3,u!]i
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section .text ;code section declaration :J
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global _start ;entry point (start of execution) ?PpGBm2f*
_start: mov edx,len ;string length Kuj*U'ed7t
mov ecx,msg ;string start 7 3 Oo;
mov ebx,1 ;file handle: stdout E/<5JhI9~
mov eax,4 ;sys_write 1u%e7
int 80h ;kernel system call TB oN8cB}
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mov ebx,0 ;return value K3CTxU(
mov eax,1 ;sys_exit ?zS
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int 80h ;kernel system call J)148/
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x86 CPU,Windows,MASM32 #z(JYw,
.386 x)^/3
.model flat,stdcall vX9B^W||x
option casemap:none #]g9O ?0$
;Include 文件定义 &efwfnG<
include windows.inc J2vaKl
include user32.inc ]j^V5y"
includelib user32.lib 4ONou&T
include kernel32.inc $@VQ{S
includelib kernel32.lib BGe&c,feIc
;数据段 $<]G#&F
.data ZRD@8'1p
szCaption db 'A MessageBox!',0 _QS +{
szText db 'Hello,world!',0 @P$_2IU"
;代码段 f^EDiG>b`
.code /d1
B-I
start: ox}LC,!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK kS\A_"bc
invoke ExitProcess,NULL KRL9dD,&
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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end start &*w)/W
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AWK QcXqMx
BEGIN { print "Hello, world!" } ,hggmzA~
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BASIC 2V-zmyJs5
传统版BASIC(例如GWBASIC): zG[GyyAQ
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10 PRINT "Hello, world!" =Nc}XFq
20 END G#|`Bjv"aP
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或在提示符输入: 0-N"_1k|?
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?"Hello, world!":END 1=9M@r~ ^
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现代版BASIC(例如Quick BASIC): bPe|/wp
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Print "Hello, world!" gM5`UH|
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以下的语句在Quick BASIC中同样有效:
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? "Hello,world!" ++Z,U
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BCPL Z2%ySO
GET "LIBHDR" 03{pxI
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LET START () BE S<-e/`p=H
$( figCeJ!W4
WRITES ("Hello, world!*N") M?3Nh;
$) IKm_YQ$XOy
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Befunge | M|5Nc>W
"!dlrow olleH">v AJ:(NV1=
, $;1TP|
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l
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Brainfuck h VQj$TA
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< \?|FB~.Ry
+++++++++++++++.>.+++.------.--------.>+.>. E\X:VQ9
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C TsvF~Gdp
#include <stdio.h> [ITtg?]F
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int main(void) q#mw#Uw-
{ ;:Yz7<>Y,
printf("Hello, world!\n"); t& *K
return 0; Y[8GoqE|
} L
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C++ "E6*.EtTN#
#include <iostream> fBi6%
#
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int main() : }q~<
{ _UqE
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std::cout << "Hello, world!" << std::endl; x9U(,x6r
return 0; BwpSw\\?@
}
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C++/CLI {tN?)~ZQ
int main() WqHsf1?N
{ ~h<<-c
System::Console::WriteLine("Hello, world!"); T=kR!Gx
} mHY R?
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C# (C Sharp) iz0GL&<
class HelloWorldApp i.(kX`~J1
{ - fB;pS,
public static void Main() DC-tBbQkk
{
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System.Console.WriteLine("Hello, world!"); KcK,%!>B
} k|SywATr
} o-f;$]yp>
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COBOL bRhc8#kw)
IDENTIFICATION DIVISION. T"tR*2HwSd
PROGRAM-ID. HELLO-WORLD. $1F$3"k
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ENVIRONMENT DIVISION. 0[O ."9
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DATA DIVISION. Si:$zGL$(
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PROCEDURE DIVISION. =Ay'\j
DISPLAY "Hello, world!". RXbhuI
STOP RUN. )qL UHE=
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Common Lisp /ta5d;@
(format t "Hello world!~%") @uJ^k
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DOS批处理 NQdz]o
@echo off 0|^/ e-^
echo "Hello, world!" jmH=W)
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Eiffel ^Fe%1Lnt
class HELLO_WORLD b)e';M
e0nr dM[i
creation ^s;xLGl]
make *2(W`m
feature AB1.l
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make is *\M$pUS{
local \uUd *
io:BASIC_IO |RA|nu
do &-hz&/A,
!!io ayR;|S
io.put_string("%N Hello, world!") !=f$
[1
end -- make !gKz=-C
end -- class HELLO_WORLD 1\{_bUZ&
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Erlang 8do7`mN
-module(hello). P>wDr`*
-export([hello_world/0]). /KCJ)0UU
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hello_world() -> io:fwrite("Hello, World!\n"). 3%NbT
H({Y
z/Kjz$l!
Forth L4x08 e
." Hello, world!" CR 3SMb#ce*o
VGPBD-6)
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Fortran Ug1[pONk
WRITE(*,10) \(.])I>)eh
10 FORMAT('Hello, World!') d${RZ}/
STOP IcDAl~uG
END |vI1C5e
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KBO{g:"
HTML =ll{M{0Q]!
<HTML> hHoc>S6^M
<HEAD> +,H6)'#Z
<TITLE> Hello World! </TITLE> )dMXn2O
</HEAD> wBb J
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<BODY> <8SRt-Cr
<p>Hello World!</p> KVC$o+<'`%
</BODY> |rhCQ"H
</HTML> DClV&\i=o
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\dG#hH4ZD
INTERCAL @[vwqPOL
PLEASE DO ,1 <- #13 u]Eyb),Gy
DO ,1 SUB #1 <- #238 O6Gg?j
DO ,1 SUB #2 <- #112 mH/$_x)o
DO ,1 SUB #3 <- #112 j_I
DO ,1 SUB #4 <- #0 4NN81~v 4
DO ,1 SUB #5 <- #64 \kQ@G
DO ,1 SUB #6 <- #238 4YmN3i
DO ,1 SUB #7 <- #26 R DAihq
DO ,1 SUB #8 <- #248 `"#0\Wh
DO ,1 SUB #9 <- #168 zq?Iwyo
DO ,1 SUB #10 <- #24 w{HDCPuS
DO ,1 SUB #11 <- #16 NETji:d
DO ,1 SUB #12 <- #158 !6 k{]v
DO ,1 SUB #13 <- #52 uINm>$G,5
PLEASE READ OUT ,1 NyTGvBf
PLEASE GIVE UP
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Java `Qc_]CWYH
public class Hello 9W~3E^x
{ 1q&gTv