“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。 H<ZU#U0FZf
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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》。 @("}]/O
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以下是用不同语言写成的Hello World程序的几个例子: uu%?K@Qq
Ada ACjf\4Q
with Ada.Text_Io; use Ada.Text_Io; Z0fJ9HW
procedure Hello is BN@,/m9OQ%
begin f]d!hz!
Put_Line ("Hello, world!"); rwpgBl
end Hello; ex?\c"
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汇编语言 MFg'YA2/
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x86 CPU,DOS,TASM }#= Od e
MODEL SMALL I}v]Zm9
IDEAL ^C9x.4I$)
STACK 100H g]`bnZ7
<]8^J}8T{D
DATASEG W>L@j(
HW DB 'Hello, world!$' ZM~`Gd9K0E
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CODESEG 3:|-#F*k{
MOV AX, @data ,w&:_n
MOV DS, AX 67J*&5? |
MOV DX, OFFSET HW 64D%_8#m
MOV AH, 09H " OGdE_E
INT 21H viuiqs5[Bi
MOV AX, 4C00H =ef1XQ{i*
INT 21H |5xz l
END '; /84j-3F
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x86 CPU,GNU/Linux,NASM O3!d(dY=_
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax).
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;Enter this into "hello.asm" then type: s#lto0b"8
;"nasm -f elf hello.asm" S!7g)
;"ld hello.o -o hello" a{_ KSg
;"./hello"
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section .data ;data section declaration "2mFC!
msg db 'Hello World!',0AH uu>lDvR*
len equ $-msg ;string length ?`A9(#ySM
b}%g}L D
section .text ;code section declaration Dq`~XS*
global _start ;entry point (start of execution) CT}' ")Bm
_start: mov edx,len ;string length hNO)~rt
mov ecx,msg ;string start Ofm5[q=
mov ebx,1 ;file handle: stdout @*_ZoO7{
mov eax,4 ;sys_write 8ath45G @
int 80h ;kernel system call nx;$dxx_Ws
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mov ebx,0 ;return value C<t RU5|
mov eax,1 ;sys_exit E{gv,cUM
int 80h ;kernel system call =yh3Nd:u
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x86 CPU,Windows,MASM32 0l1.O2-
.386 lzoeST
.model flat,stdcall V5Xi '=
option casemap:none `r]TA]DR
;Include 文件定义 HZuiVW8
include windows.inc !a4cjc(
include user32.inc C.HYS S
includelib user32.lib 1$OVe4H1
include kernel32.inc /u?9S/
includelib kernel32.lib {,F/KL^u
;数据段 aG
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.data .ujj:>
szCaption db 'A MessageBox!',0 QmHwn)Ly
szText db 'Hello,world!',0 fPrb%
;代码段 I<xy?{s
.code (s Jq;Z
start: 0T1ko,C!,e
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK s<d!+<
invoke ExitProcess,NULL &_YtY47
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WCoF{*
end start 3!bK d2"
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AWK -HN%B?}. x
BEGIN { print "Hello, world!" } k%^<}s@
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BASIC 'X|v+?
传统版BASIC(例如GWBASIC): p6 <}3m$
Ny B&uf
10 PRINT "Hello, world!" 0w'|d@*wV
20 END mw ?{LT
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或在提示符输入: N-D(y
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?"Hello, world!":END zfirb
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现代版BASIC(例如Quick BASIC): 2q/nAQ+
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Print "Hello, world!" erXy>H[;
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以下的语句在Quick BASIC中同样有效: v&e-`.xR
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? "Hello,world!" z2.*#xTZn
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GET "LIBHDR" wInY7uBd!
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LET START () BE xnT3^ #-h
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WRITES ("Hello, world!*N") vJ~4D*(]l
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Befunge ^=Q8]W_*
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S^|$23}
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Brainfuck z~BD(FDI
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< n?zbUA#
+++++++++++++++.>.+++.------.--------.>+.>. ?]s%(R,B5
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#include <stdio.h> >_&~!Y.Z=
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int main(void) 2T//%ys=
{ c!tvG*{
printf("Hello, world!\n"); :0WkxEY9
return 0; s.VUdR"
} wEBtre7
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C++ `l+ >iM
#include <iostream> gsLr=
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int main() )w
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{ A
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std::cout << "Hello, world!" << std::endl; "L9C
return 0; 8FB\0LA!g
} t9?R/:B%
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C++/CLI R#"U/8b>z
int main() di8W2cwz
{ [LJ705t
System::Console::WriteLine("Hello, world!"); "V*kOb&'*Z
} H @_eFlT t
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C# (C Sharp) 3C>2x(]M
class HelloWorldApp 08zi/g2
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{ =nJOaXR0
public static void Main() c+@d'yR
{ di-O*ug
System.Console.WriteLine("Hello, world!"); K)yCrEZ
} skk-.9
} c'4>D,?1
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COBOL tU+@1~
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IDENTIFICATION DIVISION. DZHrR:q?e
PROGRAM-ID. HELLO-WORLD. JIyBhFI
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ENVIRONMENT DIVISION. :N^@a-
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DATA DIVISION. %k/
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PROCEDURE DIVISION. PphR4 sIM
DISPLAY "Hello, world!". ](B&l{V
STOP RUN. opUKrB
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Common Lisp #,f}lV,&
(format t "Hello world!~%") p?dGZ2` [I
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DOS批处理 xm%[}Dt]
@echo off l|@/?GaH
echo "Hello, world!" s=^r/Sz902
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Eiffel }S~ysQwT
class HELLO_WORLD 88 tFB
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creation ]MqH13`)A
make (ybtXoQs
feature jV,(P$ 5;
make is <FUqD0sQ
local D,}'E0
io:BASIC_IO q
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do f_re"d 3u
!!io 3PvZ_!G
io.put_string("%N Hello, world!") D&z'tf5
end -- make a'_MhJ zs
end -- class HELLO_WORLD H0D>A<Ue
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Erlang ?RRSrr1
-module(hello). o@<6TlZM
-export([hello_world/0]). xY\*L:TwW
c{m
;"ZCFS
hello_world() -> io:fwrite("Hello, World!\n"). dbMu6Bm\G
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Forth ~`G;=ITo
." Hello, world!" CR $+lz<~R
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? !oVf>
Fortran m]-v IUpb
WRITE(*,10) c5B_WqjJ
10 FORMAT('Hello, World!') PNxVW
STOP }> !"SU:d
END MUCJ/GF*
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HTML ]df9'\
<HTML> *&hXJJ[+
<HEAD> {0)WS}&
<TITLE> Hello World! </TITLE> B(en5|
</HEAD> o%4&1^ Vg
<BODY> (}~eD
<p>Hello World!</p> [KimY
</BODY> *xv/b=
</HTML> t'=~"?T/o
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H ?9('o\N:
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INTERCAL j6R{
PLEASE DO ,1 <- #13 RZV1:hNN
DO ,1 SUB #1 <- #238 t5jhpPVf
DO ,1 SUB #2 <- #112 #a'x)$2;R|
DO ,1 SUB #3 <- #112 2ucF(^
DO ,1 SUB #4 <- #0 {Jw<<<G
DO ,1 SUB #5 <- #64 ,a]~hNR*X
DO ,1 SUB #6 <- #238 :WfB!4%!
DO ,1 SUB #7 <- #26 e@2Vn? 5
DO ,1 SUB #8 <- #248 @8<uAu%
DO ,1 SUB #9 <- #168 Za:BJ:
DO ,1 SUB #10 <- #24 7ck0S+N'b
DO ,1 SUB #11 <- #16 TJw.e/
DO ,1 SUB #12 <- #158 #`vGg9
DO ,1 SUB #13 <- #52 Sj{rvW
PLEASE READ OUT ,1 vn%U;}
PLEASE GIVE UP P{i8
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2$i 0yPv
Java 0p>:rU~
public class Hello WH*=81)zp
{ PM@s}(
public static void main(String[] args) t!=~5YgKs
{ 8{4D |o#O
System.out.println("Hello, world!"); ;DgX"Uzm
} 5.K$
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} }rMpp[
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q=0{E0@9({
JSP DHumBnQ
<% norc!?L
out.print("Hello, world!"); U9p.Dh~)vG
%> '3_B1iAv
u FYQ^
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MIXAL Lc: SqF
TERM EQU 19 the MIX console device number xc]C#q
ORIG 1000 start address K9N0kBJ0<
START OUT MSG(TERM) output data at address MSG `E0.P V
HLT halt execution 9Or4`JOO
MSG ALF "MIXAL" "1`i]Y\'
ALF " HELL" ]Y:
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ALF "O WOR" I'%H:53^0
ALF "LD " }Ka.bZS
END START end of the program ZR q}g:
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