“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。 HR>Y?B{
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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》。 =C %)(|
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以下是用不同语言写成的Hello World程序的几个例子: <'y<8gpM
Ada }\4yU=JPK
with Ada.Text_Io; use Ada.Text_Io; 24sMX7Q,i
procedure Hello is *X5)9dq
begin Pz4#>tP
Put_Line ("Hello, world!"); 6F\ 6,E
end Hello; V&mkS
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汇编语言 ]4:QqdV
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x86 CPU,DOS,TASM uU
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MODEL SMALL *_V+K
IDEAL rYUIFPN
STACK 100H N:j7J
:;?$5h*|`
DATASEG ?d')#WnC
HW DB 'Hello, world!$' + NlnK6T/
(m]l -Re
CODESEG 8P I%Z6
MOV AX, @data d)%WaM%V
MOV DS, AX ~id6^#&>
MOV DX, OFFSET HW 4,RPidv%O
MOV AH, 09H Z0gtliJ@
INT 21H ;QI9 OcE@/
MOV AX, 4C00H D
0Xl`0"'
INT 21H p1N}2]e
END *&U~Io"U
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x86 CPU,GNU/Linux,NASM +Z`=iia>
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). D(b01EQ;d
;Enter this into "hello.asm" then type: r. 82RoG?G
;"nasm -f elf hello.asm" -L2.cN_
;"ld hello.o -o hello" E'iE#He
;"./hello" 3(YvqPp&
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section .data ;data section declaration )f?I{
msg db 'Hello World!',0AH !gh8 Qs
len equ $-msg ;string length r$jWjb
\w9}O2lL
section .text ;code section declaration WfPb7T
global _start ;entry point (start of execution)
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_start: mov edx,len ;string length zJQh~)
mov ecx,msg ;string start ;zCUx*{
mov ebx,1 ;file handle: stdout S-t#d7'B
mov eax,4 ;sys_write *-VRkS-G
int 80h ;kernel system call O'4G'H)
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mov ebx,0 ;return value )JMqC+J3*t
mov eax,1 ;sys_exit k4+vI1Cs
int 80h ;kernel system call 0U42QEG2
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x86 CPU,Windows,MASM32 <q63?Ms'
.386 \gA!)q.;
.model flat,stdcall ~^wSwd[
option casemap:none Okq,p=D6
;Include 文件定义 }[+uHR6L
include windows.inc ^PG"
include user32.inc O9ex=m `L
includelib user32.lib dT|XcVKg
include kernel32.inc =<]`'15"V
includelib kernel32.lib &V4Zmn?UU
;数据段 vQWmHv\P
.data i)#-VOhX)
szCaption db 'A MessageBox!',0 vh,(]t
szText db 'Hello,world!',0 2 6#p,P
;代码段 y3~=8!Tj?Q
.code b6k`R4S3
start: b{0a/&&1O
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ybaY+![*
invoke ExitProcess,NULL G`!x+FB
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> O|Uz)Y94
end start =\Q<TY
*-0s
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BEGIN { print "Hello, world!" } uq5?t
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BASIC ?(ORk|)kU
传统版BASIC(例如GWBASIC): w8lrpbLh
zx@!8Z
10 PRINT "Hello, world!" <Gpji5f2
20 END r]9-~1T
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或在提示符输入: s|C[{n<_
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?"Hello, world!":END ,gV#x7IW
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现代版BASIC(例如Quick BASIC): 0/HFLz'
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Print "Hello, world!" /@:X0}L
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以下的语句在Quick BASIC中同样有效: P2n8H Fi
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? "Hello,world!" _k:8ib2TQ
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BCPL 0zW*JJxV
GET "LIBHDR" |5u~L#P
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LET START () BE k>&cHCS`*
$( ~ QRjl
WRITES ("Hello, world!*N") gIo\^ktW
$) t/ \S9
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@i ~ A7L0/
Befunge +4yre^gC
"!dlrow olleH">v ~z^?+MgZ2
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Brainfuck ('x]@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< s|%R
+++++++++++++++.>.+++.------.--------.>+.>. x3n9|Uud
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C U["0B8
#include <stdio.h> r+#{\~r7T
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int main(void) y[N0P0r l:
{ E#!N8fQ
printf("Hello, world!\n"); kN=&"
return 0; ,I"T9k-^
} @)>Z+g
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C++ )j;^3LiV3
#include <iostream> L:HvrB~
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int main() s{b\\$Rb
{ Jc":zR@5
std::cout << "Hello, world!" << std::endl; O9daeIF0#
return 0; Pd7\Q]of
} 8"%Es
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C++/CLI >YI Vi4''
int main() !Cgj
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{ _?-oPb
System::Console::WriteLine("Hello, world!"); (MLcA\LJ
} 5W)ST&YPL*
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C# (C Sharp) j(%N.f6
class HelloWorldApp evZcoH3~
{ g}MUfl-L
public static void Main() PC9,;T&7_
{ ~| j
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System.Console.WriteLine("Hello, world!"); Q:b0M11QR
} M50I.Rd
} M\{n+r-m
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COBOL vAX ( 3
IDENTIFICATION DIVISION. uZ6krI
PROGRAM-ID. HELLO-WORLD. r
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ENVIRONMENT DIVISION. 3(c-o0M
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DATA DIVISION. 8>YF}\D V
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PROCEDURE DIVISION. ^+x?@$rq
DISPLAY "Hello, world!". zT>!xGTu7~
STOP RUN. 6*i**
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c)#P}Ai
Common Lisp l5-[a
(format t "Hello world!~%") !<M
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DOS批处理 oPi>]#X
@echo off 2 GRI<M
echo "Hello, world!" Ay(p~U;gN*
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n^nE&'[?0g
Eiffel AJ7w_'u=@
class HELLO_WORLD %)j&/QdzF&
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creation CyIlv0fd}
make Cu7{>"
feature 529b. |
make is h'"m,(a
local Na91K4r#
io:BASIC_IO `#$}P;W
do >[ B.y
!!io s#Dj>Fej
io.put_string("%N Hello, world!") ?I=1T.
end -- make #Ha:O,|
end -- class HELLO_WORLD
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Erlang NifQsy)*%
-module(hello). .?{no}u.
-export([hello_world/0]). f30J8n"k
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hello_world() -> io:fwrite("Hello, World!\n"). F
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Forth HJ&P[zV^
." Hello, world!" CR {VAih-y
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Fortran c~hH
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WRITE(*,10) M|blg!j;
10 FORMAT('Hello, World!') m[}P
STOP v_XN).f;
END kk78*s {6
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HTML | In{5Ek
<HTML> l\Ozy
<HEAD> _*~F1% d
<TITLE> Hello World! </TITLE> G!j 9D
</HEAD> r~,y3L6ic
<BODY> :UdW4N-
<p>Hello World!</p> _=$~l^Y[
</BODY> S#]]h/
</HTML> Xz4q^XJ
hF$`=hE,F~
.{ v$;g
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H k3bQ32()
6!_Wo\_%
SrKitSG
INTERCAL uq3pk3
)W9
PLEASE DO ,1 <- #13 #}#m\=0
DO ,1 SUB #1 <- #238 ob>)F^.iS
DO ,1 SUB #2 <- #112 eB~\~@
DO ,1 SUB #3 <- #112 .,u>WIUxj
DO ,1 SUB #4 <- #0 OQumAj
DO ,1 SUB #5 <- #64 ]1++$Ej
DO ,1 SUB #6 <- #238 )|*Qs${tF
DO ,1 SUB #7 <- #26 d7^
`
DO ,1 SUB #8 <- #248 v_zt$bf{Y
DO ,1 SUB #9 <- #168 q=3>ij{v
DO ,1 SUB #10 <- #24 hwGK),?"+
DO ,1 SUB #11 <- #16 :[<Y#EX.
DO ,1 SUB #12 <- #158 D|OGlP
DO ,1 SUB #13 <- #52 [ K?
PLEASE READ OUT ,1 ;^/ruf[t
PLEASE GIVE UP N|i>|2EB
4<[?qd3v=
;
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Java K e4oLF2
public class Hello oB 1Qw'J
w
{ wm@j(h4
public static void main(String[] args) Onx6Fy]L
{ lfAy$qP"}
System.out.println("Hello, world!"); $$ND]qM$M
} Iynks,ikA
} 2BC!,e$Z
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JSP 2mEqfy
<% x/<ow4C
out.print("Hello, world!"); mW{;$@PLF"
%> N[
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Qm[((6}
i$y=tJehi
MIXAL QD.5oS
TERM EQU 19 the MIX console device number =OK#5r[UV
ORIG 1000 start address dSwfea_
START OUT MSG(TERM) output data at address MSG _YX% M|#
HLT halt execution 04U|Frc
MSG ALF "MIXAL" QjLU@?&
ALF " HELL" Z0&^(Fb
ALF "O WOR" FJ84'T\~
ALF "LD " [6TI_U~
END START end of the program $tu
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Nuva 3.YH7rN
<..直接输出..> | +;ZC y
Hello, world! $+PioSq
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<..或者..> SGl|{+(A
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<. vGyQ306
// 不带换行 ])?dqgwa
? "Hello, world!" B<s+I#
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