“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。 Y(h(Z
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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<Ltdw
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以下是用不同语言写成的Hello World程序的几个例子: 7nk3^$|
Ada & hv@ &
with Ada.Text_Io; use Ada.Text_Io;
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procedure Hello is Fz^5cxmw
begin RKwuvVI
Put_Line ("Hello, world!"); !s47A"O&B
end Hello; -'RD%_
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汇编语言 xZ>@wBQ
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x86 CPU,DOS,TASM Jb]22]
MODEL SMALL $QJ,V~
IDEAL ~uh,R-Q$
STACK 100H hXQo>t-$
ANXN.V
DATASEG !-s 6B
HW DB 'Hello, world!$' GFgh{'|
fx= %e
CODESEG |eH*Q%M
MOV AX, @data a'B 5m]%
MOV DS, AX f^ 6da6Z
MOV DX, OFFSET HW ;N!W|G
MOV AH, 09H i2n66d
INT 21H LGPg\g`
MOV AX, 4C00H A:,R.P>`C
INT 21H m,#Us
END onF?;>[
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x86 CPU,GNU/Linux,NASM 0j2M< W#
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). .:2=VLuj U
;Enter this into "hello.asm" then type: jjJ l\Vn
;"nasm -f elf hello.asm" J]qx4c
;"ld hello.o -o hello" $iOkn|~<@W
;"./hello" W0KSLxM
xI^nA2g
section .data ;data section declaration a~O](/+p;
msg db 'Hello World!',0AH <PXnR\
len equ $-msg ;string length `zMR?F`
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section .text ;code section declaration 1iIag}?p
global _start ;entry point (start of execution) M;1B}x@
_start: mov edx,len ;string length FHbw&
mov ecx,msg ;string start 6%2\bI.#
mov ebx,1 ;file handle: stdout h!~u^Z.7<
mov eax,4 ;sys_write .DZ8kKY
int 80h ;kernel system call ,)P6fa/
#;Z+X)
mov ebx,0 ;return value c`4i#R
mov eax,1 ;sys_exit a$h
zG-
int 80h ;kernel system call ~Is-^k)y
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!UW{xHu
x86 CPU,Windows,MASM32 A_<1}8{L
.386 <[<]+r&*
.model flat,stdcall GXx/pBdy[4
option casemap:none yB,{:kq7D
;Include 文件定义 lv0}d
include windows.inc !Zma\Ip
include user32.inc o9L$B
includelib user32.lib ~4[4"Pi>|
include kernel32.inc rH5'+x K
includelib kernel32.lib PvB-Cqc
;数据段 ^ G@o} Z
.data +q@g
szCaption db 'A MessageBox!',0 XoqmT/P
szText db 'Hello,world!',0 \' ;zD-MX
;代码段 30nR2mB
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.code TNK~ETE4
start: k4Ub+F
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK EHY}gG)
invoke ExitProcess,NULL ^Q""N<
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> g$$j:U*-
end start VA0p1AD
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BEGIN { print "Hello, world!" } v^QUYsar
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BASIC 64h$sC0z/e
传统版BASIC(例如GWBASIC): v$i[dZSN[
~G*eJc0S:
10 PRINT "Hello, world!" HtbN7V/
20 END u*i[A\Y
_/
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或在提示符输入: '}eA2Q>BV
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?"Hello, world!":END )/2J|LxS
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现代版BASIC(例如Quick BASIC): |<Gq^3 2
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Print "Hello, world!" i4 Vv6Sx1
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以下的语句在Quick BASIC中同样有效: BavGirCp
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? "Hello,world!" #O2e[ E-
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BCPL !c 3li .
GET "LIBHDR" 3"XS#~l%
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LET START () BE -<GSHckD
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WRITES ("Hello, world!*N") ahJu+y
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Wk"\aoX"E
Befunge gvx
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"!dlrow olleH">v 'K0=FPB/@
, JIobs*e0m
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Brainfuck R:LThFx
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< mI$3[ #+
+++++++++++++++.>.+++.------.--------.>+.>. WKwU:im
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C R#QcQx
#include <stdio.h> :',Q6j( s
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int main(void) H!+T2<F9R
{ Ef2#}%>
printf("Hello, world!\n"); GG@&jcp7
return 0; lN-[2vT<
} mq(*4KFWJ2
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C++ MiX*PqNTM
#include <iostream> v'QmuMWF
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int main() Gpauy=4f
{ l]GUQcN=
std::cout << "Hello, world!" << std::endl; v^;%Fz_Dr
return 0;
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} )|` #BC
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dt efDsK
C++/CLI P}El#y#&
int main() @sV6g?{tI
{ %z_PEqRj
System::Console::WriteLine("Hello, world!"); *:*Kdt`'G
} j(;o
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C# (C Sharp) e uF@SS
class HelloWorldApp 0{Kb1Ut
{ MMI7FlfY
public static void Main() iA^GA8dn
{ b\U p(]
System.Console.WriteLine("Hello, world!"); *)2&gQ&%+
} B tZycI
} S$Cht6m
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^h :%%\2
COBOL ;LBq!
IDENTIFICATION DIVISION. lP!`lhc-^
PROGRAM-ID. HELLO-WORLD. Y-.pslg
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ENVIRONMENT DIVISION. ,pgpu !
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DATA DIVISION. ZS-O,[
0 ;b%@_E
PROCEDURE DIVISION. Felu`@b
DISPLAY "Hello, world!". yH<^txNF
STOP RUN. ~olta\|
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Common Lisp llf|d'5Nl
(format t "Hello world!~%") QT5,_+ho
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DOS批处理 DL ^}?Ve
@echo off m#E%,
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echo "Hello, world!"
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Eiffel ^cE|o&Rm;
class HELLO_WORLD !,#42TY*X
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creation F+Qp
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make #1:&uC1vj
feature YGBVGpE9
make is ~*|0yPFg
local t?1+Yw./em
io:BASIC_IO AeqxH1 %
do a'LM6A8~x
!!io D Hkmn
io.put_string("%N Hello, world!") \BT 8-}
end -- make 1D42+cy
end -- class HELLO_WORLD F[Dhj,C"
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Erlang 6.z8!4fpl
-module(hello). {2`:7U~|
-export([hello_world/0]). \($EYhx
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hello_world() -> io:fwrite("Hello, World!\n"). k%iZ..
w l.#{@J]<
uTNmt]
Forth *5DOTWos
." Hello, world!" CR }MKm>N
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Fortran lW! U:
WRITE(*,10) aB9Pdut
10 FORMAT('Hello, World!') BJgg-z{Y
STOP :T5p6:
END 0*66m:C2
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HTML p&wXRI
<HTML> uf;^yQi
<HEAD> =W1`FbR
<TITLE> Hello World! </TITLE> )NeI]p
</HEAD> YYFJJ,7?
<BODY> $O*rxQ}
<p>Hello World!</p> wv>uT{g#
</BODY> U[\aj;g)
</HTML> KsM2?aqwf_
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H ' bio:1
Fx']kn9
)--v>*,V
INTERCAL ,fQc0gM=[
PLEASE DO ,1 <- #13 j[!'l,I
DO ,1 SUB #1 <- #238 pEIc?i*
DO ,1 SUB #2 <- #112 IS0RhtGy/
DO ,1 SUB #3 <- #112 * iW>i^
DO ,1 SUB #4 <- #0
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DO ,1 SUB #5 <- #64 yW.s?3X
DO ,1 SUB #6 <- #238 6 flc
DO ,1 SUB #7 <- #26 hv
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DO ,1 SUB #8 <- #248 pyZ&[*@
DO ,1 SUB #9 <- #168 "=I
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DO ,1 SUB #10 <- #24 JF]HkH_u
DO ,1 SUB #11 <- #16 T69'ta32V
DO ,1 SUB #12 <- #158 iJ_FJ[ U
DO ,1 SUB #13 <- #52 5KJN](x+
PLEASE READ OUT ,1 |,F/_
PLEASE GIVE UP E 5PefD\m
b'`8$;MII
Eh;SH^&6
Java %RgCU$s[>
public class Hello afRUBjs
{ `As.1@
public static void main(String[] args) /C29^ P
{ %7q,[g8
System.out.println("Hello, world!"); SEQ
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} X_XeI!,b
} Z++JmD1J
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JSP :|xV}
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out.print("Hello, world!"); weC$\st:D
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