“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。 }qk8^W{
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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》。 %`F&,!d
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以下是用不同语言写成的Hello World程序的几个例子: 3<L>BakD
Ada Mjr19_.S
with Ada.Text_Io; use Ada.Text_Io; *$4 EXwt'
procedure Hello is l JR
begin o2J-&
Put_Line ("Hello, world!"); a7_ &;
end Hello; ZtFOIb*
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汇编语言 L+rMBa
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x86 CPU,DOS,TASM kg@Okz N%
MODEL SMALL /@!%/Kl
IDEAL 4)zHkN+
STACK 100H HLa3lUo
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DATASEG 2^*a$OJ
HW DB 'Hello, world!$' &.ENcEic
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CODESEG wk'12r6=(-
MOV AX, @data M
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MOV DS, AX ;]/emw=a
MOV DX, OFFSET HW
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MOV AH, 09H t[yu3U
INT 21H 0j--X?-
MOV AX, 4C00H ^@"EI|fsP
INT 21H G';yb^DB
END *nj={Ss&
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x86 CPU,GNU/Linux,NASM 5ml#/kE
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). YaWZOuxm
;Enter this into "hello.asm" then type: ST*\ Q
;"nasm -f elf hello.asm" =gYKAr^p5
;"ld hello.o -o hello" YH
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;"./hello" cKb jW
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section .data ;data section declaration Bj-80d,
msg db 'Hello World!',0AH lO=Nw+'$S
len equ $-msg ;string length `ecIy_O3P&
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section .text ;code section declaration )e1&[0
global _start ;entry point (start of execution) \@3B%RW0
_start: mov edx,len ;string length ,y'E#_cTgQ
mov ecx,msg ;string start " G&S`8
mov ebx,1 ;file handle: stdout wTu_Am
mov eax,4 ;sys_write ?aMV{H*Q*
int 80h ;kernel system call hS?pc<~`#
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mov ebx,0 ;return value bGO[P<<
mov eax,1 ;sys_exit 6BnP"R.
int 80h ;kernel system call [#}0)
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x86 CPU,Windows,MASM32 )$.::[pNA
.386 feI%QnK)U
.model flat,stdcall TH%J=1d
option casemap:none 42Qfv%*c
;Include 文件定义 - s}
include windows.inc ,/XeG`vk
include user32.inc jIzkI)WC|
includelib user32.lib K]
include kernel32.inc mw[T[
includelib kernel32.lib HVq02 Z
;数据段 6G^x%s
.data Rfk8trD B
szCaption db 'A MessageBox!',0 O/|,rAE
szText db 'Hello,world!',0 3[RP:W@%
;代码段 T@S\:P
.code re$xeq\1P?
start: $CXMeY{tOo
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK `[&) X
invoke ExitProcess,NULL 5f` a7R
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> GmONhh(k
end start #D qVh!t"
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BEGIN { print "Hello, world!" } I"4Lma
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BASIC hJ>Kfm
传统版BASIC(例如GWBASIC): p H5iv>H
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10 PRINT "Hello, world!" Dm")\"5\?
20 END _N-.=86*
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或在提示符输入: gcy'"d"
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?"Hello, world!":END !'
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现代版BASIC(例如Quick BASIC): z`?{5v -Qs
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Print "Hello, world!" #JOWiO0>
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以下的语句在Quick BASIC中同样有效: 5
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? "Hello,world!" ZSBa+3;z
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BCPL V[w Y;wj
GET "LIBHDR" %y{f]m
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LET START () BE /9K,W)h_
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WRITES ("Hello, world!*N") TSl:a &
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Befunge &EELq"5K
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Brainfuck ]d}h`!:
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< $s*nh>@7
+++++++++++++++.>.+++.------.--------.>+.>. $,/;QP}
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#include <stdio.h> c"pI+Q
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int main(void) 015
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{ ]ZkR~?
printf("Hello, world!\n"); <~%e{F:[#
return 0; ,C=Lu9
} e(5:XHe
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C++ k2"DFXsv
#include <iostream> CJDnHuozc
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int main() S\,~6]^T
{ %gd{u\h^
std::cout << "Hello, world!" << std::endl; jGeil
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return 0; 4(h19-V
} ?yfw3s
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C++/CLI 17\5NgB
int main() xrXfLujn%
{ ],?rFK{O
System::Console::WriteLine("Hello, world!"); }!&Vc f
} E8Rk
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C# (C Sharp) q&:UP
class HelloWorldApp 8)NQt$lWp
{ "
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public static void Main() feSj3,<!
{ \V1geSoE
System.Console.WriteLine("Hello, world!"); 4
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} $N}nO:`t
} Z4"SKsJT/>
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COBOL ( <Abw{BTm
IDENTIFICATION DIVISION. <hJ%]]
PROGRAM-ID. HELLO-WORLD. aX)k(*|
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ENVIRONMENT DIVISION. fcim4dfP
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DATA DIVISION. r Ljb'\<*
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PROCEDURE DIVISION. $=IJ-_'o
DISPLAY "Hello, world!". z;VAi=m
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STOP RUN. <{z*6FM!'
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Common Lisp wWaJ%z>3y
(format t "Hello world!~%") Y]9AC
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DOS批处理 l2&s4ERqSm
@echo off VJ8"Q
echo "Hello, world!" ]1^F
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M<%g )jn_
Eiffel MnQ4,+ji-
class HELLO_WORLD k|r+/gIV
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creation Z [aKic
make <%SG
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feature `veq/!
make is n/&}|998?
local 4U;Zs3
io:BASIC_IO b W/^2B
do 2i4&*&A
!!io 8Hf:yG,
io.put_string("%N Hello, world!") .$rt>u,8<
end -- make \i2S'AblYq
end -- class HELLO_WORLD =!~6RwwwY
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Erlang {SQ#n@Q&$
-module(hello). w]%|^:
-export([hello_world/0]). /'ukeK+'
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hello_world() -> io:fwrite("Hello, World!\n"). H2cY},
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Forth k>'c4ay290
." Hello, world!" CR 3jJd)C R
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Fortran -Y{=bZS u
WRITE(*,10) ,WA[HwY-
10 FORMAT('Hello, World!') hd'JXKMy
STOP WlF}R\N!
END T\
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HTML 4(hHp6}b
<HTML> ,lUroO^^
<HEAD> =8p *Ijs
<TITLE> Hello World! </TITLE> zG|#__=T
</HEAD> d.)%C]W{
<BODY> e=).0S`*F
<p>Hello World!</p> X`+8rO[
</BODY> ^T.icSxP
</HTML> s^QXCmb$8
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INTERCAL jkrv2 `"
PLEASE DO ,1 <- #13 jx?"m=`s:
DO ,1 SUB #1 <- #238 ?S~@Ea8/M
DO ,1 SUB #2 <- #112 "L)=Y7Dx
DO ,1 SUB #3 <- #112 kuZs30^
DO ,1 SUB #4 <- #0 q
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DO ,1 SUB #5 <- #64 ,5
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DO ,1 SUB #6 <- #238 B S^P&TR!
DO ,1 SUB #7 <- #26 h%0FKi^
DO ,1 SUB #8 <- #248 ,iy;L_N
DO ,1 SUB #9 <- #168 Z'V"nhL
DO ,1 SUB #10 <- #24 rmq^P;At
DO ,1 SUB #11 <- #16 ]rY3bG'&
DO ,1 SUB #12 <- #158 03$lg DQ
DO ,1 SUB #13 <- #52 `Cv@16
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PLEASE GIVE UP p?#%G`dm
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Java X *fle
public class Hello H+O^e l
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public static void main(String[] args) )2YZ [~3
{ )Z.M(P
System.out.println("Hello, world!"); g:&V9