“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。 $w <R".4
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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》。 %#~wFW|]x
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以下是用不同语言写成的Hello World程序的几个例子: $F9w0kz:,*
Ada i=]R1yP
with Ada.Text_Io; use Ada.Text_Io; L-rV+?i`6f
procedure Hello is izGU&VeB
begin )?{!7/H F@
Put_Line ("Hello, world!"); WQze|b%
end Hello; Y<(7u`F
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汇编语言 IDD`N{EA
TQNdBq5I6
x86 CPU,DOS,TASM
89GW!
MODEL SMALL XTk
:lzFH
IDEAL |2n*Ds'
STACK 100H im9EV|;
WAR!#E#J7
DATASEG $'_Q@ZBq
HW DB 'Hello, world!$' xgj'um
T+zhj++
CODESEG pX*E(Q)@!
MOV AX, @data 3D!7,@&>3
MOV DS, AX $ta JVVF
MOV DX, OFFSET HW 4&%H;Q
MOV AH, 09H |6DJ5VFzD
INT 21H , %8)I("
MOV AX, 4C00H p{W
Amly
INT 21H ?I?~BWu
END D|m0Vj b
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x86 CPU,GNU/Linux,NASM }vx,i99W?
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). $joGda
;Enter this into "hello.asm" then type: &qSf
~7/
;"nasm -f elf hello.asm" "=C~IW
;"ld hello.o -o hello" ZsXw]Wa
;"./hello" ("j;VqYUL
0 V]MAuD($
section .data ;data section declaration Qbjm,>H/^
msg db 'Hello World!',0AH qLb~^'<iD
len equ $-msg ;string length \b"|p%CL8
hEZo{0:b"
section .text ;code section declaration 9I
[:#,zdf
global _start ;entry point (start of execution) '%ZKvZ-
_start: mov edx,len ;string length KU{zzn;g
mov ecx,msg ;string start vO~w~u5
mov ebx,1 ;file handle: stdout RrCG(Bh
mov eax,4 ;sys_write IBeorDIZ
int 80h ;kernel system call YcwDNsk
9W\"A$;+&
mov ebx,0 ;return value T+EwC)Ll
mov eax,1 ;sys_exit ^z{Xd|{"
int 80h ;kernel system call w/*#TDR
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cC/32SmY4
x86 CPU,Windows,MASM32 sq(5k+y*J
.386 rr\u)D#)
.model flat,stdcall $M0l
(htR
option casemap:none y4|<+9<7
;Include 文件定义 ^'tT_
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include windows.inc >@cBDS<6R
include user32.inc zh=0zJ
includelib user32.lib @6+_0^
include kernel32.inc dqQJC qc!
includelib kernel32.lib Yy]TU} PY
;数据段 _=`DzudE
.data W.cc!8
szCaption db 'A MessageBox!',0 $8 &Y(`
szText db 'Hello,world!',0 )6X-m9.X
;代码段 WjR2:kT
.code TB&IB:4)R
start: 1BW 9,Xr
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Qnt}:M+
invoke ExitProcess,NULL ntPj9#lf
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> a JjUy%
end start LH+Bu%s
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3]lq#p:
AWK RdyKd_0`Q
BEGIN { print "Hello, world!" } 0F_hXy@K
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BASIC ;r6YIS4@
传统版BASIC(例如GWBASIC): &J|I&p
2-ksr}:
10 PRINT "Hello, world!" =L1%gQJJ&
20 END )!E:
L;vglS=l;
或在提示符输入: {:_*P
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?"Hello, world!":END T95FoA
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现代版BASIC(例如Quick BASIC): lqh:c
B=^M& {
Print "Hello, world!" hS &H*
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以下的语句在Quick BASIC中同样有效: <3N\OV2
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? "Hello,world!" >Je$WE3
)G, S7A
JBOU$A~
BCPL Lk$Mfm5"M
GET "LIBHDR" /g9^g(
R)$]r>YZF
LET START () BE <Z_\2
YWA
$( CH!\uK22
WRITES ("Hello, world!*N") nm%qm
$) m1]/8{EC7
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NRP)'E
Befunge lFcHE c
"!dlrow olleH">v dxZn| Y
, tP2.D:( R
^_@ sm G?y~
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Brainfuck K%/\XnCY
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ;*FY+jM
+++++++++++++++.>.+++.------.--------.>+.>. +8 \?7,FY
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C UA6
C/
#include <stdio.h> 9fTl6?x
be_h
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int main(void) P Gxv4(%
{ y0O e)oP
printf("Hello, world!\n"); =^*EM<WG)
return 0; ?y>v"1+
} a Iyzt
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C++ OtQ]\:p7
#include <iostream> vZS/?pU~~
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int main() SJLs3iz_)
{ %t1Z!xv_
std::cout << "Hello, world!" << std::endl; >,k2|m
return 0; u6Ux nqNc
} #wvGS%
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C++/CLI iGj,B =35
int main() =c#mR" 1
{ |t3}>+"?z
System::Console::WriteLine("Hello, world!"); g}hNsU=$5~
} +gBDE:
qQo*:3/];
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C# (C Sharp) YbWz!.WPe
class HelloWorldApp `-b{|a J
{ aYpc\jJ
public static void Main() Y4,p_6aKJ]
{ _Fv6S}~Q
System.Console.WriteLine("Hello, world!"); Oo(xYy
} NL-PQ%lUA
} [rAi9LSO"
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&pz`gna
COBOL eDNY|}$}v
IDENTIFICATION DIVISION. TI"Ki$jC
PROGRAM-ID. HELLO-WORLD. 0lYP!\J3]%
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ENVIRONMENT DIVISION. Y}yh6r;i
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DATA DIVISION. &lzCRRnvt
tN.BI1nB
PROCEDURE DIVISION. ,5t_}d|3C=
DISPLAY "Hello, world!". U%VFr#
STOP RUN. hmb=_W
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Common Lisp KlBT9"6"
(format t "Hello world!~%") l#+@!2z
=R9`to|
_XrlCLp: d
DOS批处理 {Q]7!/>>
@echo off i{Q,>Rt
echo "Hello, world!" juM~X5b
?G&J_L=@Y
Dp^=% F{t
Eiffel J]48th0,
class HELLO_WORLD t0:~BYXu
L/bvM?B^
creation es+ZPX>Y
make L!ms{0rJ
feature fbah~[5}
make is '?{L
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local v Oo^H
io:BASIC_IO P$clSJW
do ?&U~X)Q
!!io kqC7^x
io.put_string("%N Hello, world!") S|yDGT1
end -- make dOgc%(kz
end -- class HELLO_WORLD %/s+-j@s:
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1mfB6p1Z(
Erlang ~1,$
-module(hello). "zFTPL"
-export([hello_world/0]). R-f('[u
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hello_world() -> io:fwrite("Hello, World!\n"). su8()]|0x
[e:ccm
[,z>msEB.
Forth l]IQjjJ`
." Hello, world!" CR {;JFoe+
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&&96kg3
Fortran '0qKb*
WRITE(*,10) S^i<_?nwg
10 FORMAT('Hello, World!') v:9Vp{)
STOP MP
Q?Q]'
END 5'(#Sf
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HTML pM!cF
<HTML> <2I<Z'B,e
<HEAD> +6<g N[
<TITLE> Hello World! </TITLE> = o1&.v2j
</HEAD> nC9xN
<BODY> D r6u0rx8
<p>Hello World!</p> lOIf4
</BODY> Nb>C5TjR
</HTML> hN;$'%^
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>-CNHb
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INTERCAL 6bbzgULl
PLEASE DO ,1 <- #13 [Ue"#w
DO ,1 SUB #1 <- #238 :&O6Y-/B
DO ,1 SUB #2 <- #112 @Y&(1Wl
DO ,1 SUB #3 <- #112 &=-{adm
DO ,1 SUB #4 <- #0 G\r>3Ys
DO ,1 SUB #5 <- #64 t@BhosR-
DO ,1 SUB #6 <- #238 c 9zMI
DO ,1 SUB #7 <- #26 o{K#LP
DO ,1 SUB #8 <- #248 1tCe#*|95
DO ,1 SUB #9 <- #168 =G1
5eZW
DO ,1 SUB #10 <- #24 glNXamo
DO ,1 SUB #11 <- #16 gBy7q09r
DO ,1 SUB #12 <- #158 - I j
DO ,1 SUB #13 <- #52 mS-{AK
PLEASE READ OUT ,1 1jj.oa]
PLEASE GIVE UP R"JT+m
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Java ]y/!GFQ
public class Hello fq[,9lK
{ 9m2Yrj93
public static void main(String[] args) )^Md ^\?
{ "3uPK$
System.out.println("Hello, world!"); SBG.t:
} Lq5Eu$;r
} W}> wRy
{ Em fw9L
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JSP *JY2vq
<% aK'%E3!~=x
out.print("Hello, world!"); f`,isy[
%> xz vbjS W
vA@\V)s
2c8e:Xgv
MIXAL P&8QKX3
j^
TERM EQU 19 the MIX console device number 7?~*F7F
ORIG 1000 start address 4-\gha
START OUT MSG(TERM) output data at address MSG vsCy?
HLT halt execution &