“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。 IwGqf.!.>
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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》。 jYNrD"n
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以下是用不同语言写成的Hello World程序的几个例子: >-&R47G
Ada E.1J2Ne
with Ada.Text_Io; use Ada.Text_Io; MX@IHc
procedure Hello is !w
BJ,&E
begin TAjh"JJIV
Put_Line ("Hello, world!"); h|X^dQb]
end Hello; fs/*V~@
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汇编语言 lRh9j l
Uye|9/w8 !
x86 CPU,DOS,TASM W0I#\b18
MODEL SMALL z;@*r}H
IDEAL 9Fn\FYUq
STACK 100H Dk48@`l2
.`?@%{
DATASEG IK*07h/!
HW DB 'Hello, world!$' vn/.}GkpU
boG_f@dv(
CODESEG 1+?N#Fh
MOV AX, @data "RIZV
MOV DS, AX fNGZ o
MOV DX, OFFSET HW `6+"Z=:
MOV AH, 09H #c^^=Z
INT 21H +iOKb c'
MOV AX, 4C00H D7_*k%;@
INT 21H VK@!lJu!
END Q1@A2+ c
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x86 CPU,GNU/Linux,NASM vloF::1
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ftH:r_"O#
;Enter this into "hello.asm" then type: KZPEG!-5
;"nasm -f elf hello.asm" 8QMPY[{
;"ld hello.o -o hello" !ct4;.2
D
;"./hello" I-OJVZ( V
h=-"SW
section .data ;data section declaration 1;VHM'
msg db 'Hello World!',0AH a&vY!vx3
len equ $-msg ;string length 4tY ss
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section .text ;code section declaration ]l8^KX'
global _start ;entry point (start of execution) W456!OHa
_start: mov edx,len ;string length ,@5I:X!rR
mov ecx,msg ;string start v+99
-.
mov ebx,1 ;file handle: stdout F2X0%te
mov eax,4 ;sys_write tDUwy^j
int 80h ;kernel system call O$4yAaD
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mov ebx,0 ;return value [=~ pe|8:
mov eax,1 ;sys_exit o6 $4/I
int 80h ;kernel system call iYC9eEF
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x86 CPU,Windows,MASM32 $\9~)Rq6
.386 ,0LU~AGe
.model flat,stdcall T
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option casemap:none 4*$G & TX
;Include 文件定义 R##~*>#
include windows.inc mc4i@<_?
include user32.inc %.Q
!oYehj
includelib user32.lib W^"AU;^V56
include kernel32.inc JchSMc.9
includelib kernel32.lib 0wS+++n$5
;数据段 K(aJi,e>
.data L@fY$Rw
szCaption db 'A MessageBox!',0
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szText db 'Hello,world!',0 Sfdu`MQR
;代码段 *g^x*|f6
.code IsR!'%Pu
start: !W?gR.0$=
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Kv~U6_=1O
invoke ExitProcess,NULL XC+A_"w)
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> S{3nM<
end start JfPD}w
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BEGIN { print "Hello, world!" } {5
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c [5KG}
BASIC )vxUT{;sH
传统版BASIC(例如GWBASIC): i&n'N8D@
/t(C>$ }p
10 PRINT "Hello, world!" U,LTVYrO
20 END 2PG [7u^
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或在提示符输入: 71l%MH
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?"Hello, world!":END `/_G$_
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现代版BASIC(例如Quick BASIC): M+x,opl
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Print "Hello, world!" Fgh]KQ/5
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以下的语句在Quick BASIC中同样有效: b6*!ACY
]~Z6;
? "Hello,world!" N\bocMc,X
h\'n**f_x
%'T #pz
BCPL N
8-oY$*
GET "LIBHDR" 2@
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L31|\x]
LET START () BE 9HX =T%
$( E6 WA}_
WRITES ("Hello, world!*N") x|vqNZ\F
$) XO'l Nb.
.rf"
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\7*`}&
Befunge e zOj+vz
"!dlrow olleH">v @K!&qw
, !Ta>U^7
^_@ 1</kTm/Qa
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Brainfuck oqeSG.1
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< }C|dyyr
+++++++++++++++.>.+++.------.--------.>+.>. )Dz+X9;g+
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#include <stdio.h> uAWM\?
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int main(void) `Ry]y"K
{ p
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printf("Hello, world!\n"); ]EpWSs!"g
return 0; x|5k<CiA
} C7O6qpO
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C++ b?'yAXk
#include <iostream> +j4"!:N}B
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int main() Q6r7.pk"SU
{ pn^ d]rou?
std::cout << "Hello, world!" << std::endl; G2FXrkU
return 0; J^g!++|2P
} |.3DD"*
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C++/CLI a.zpp'cEb
int main() j.@\3'
{ ,#kIr
System::Console::WriteLine("Hello, world!"); pt}X>ph{
} wLH] <k
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C# (C Sharp) Qg<(u?7N
class HelloWorldApp .?hP7;hhI
{ 1&U>,;]*
public static void Main() $-*!pRaVU
{ "%x<ttLl
System.Console.WriteLine("Hello, world!"); h?azFA~
} C;vtY[}<
} xoR;=ph
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COBOL :]1TGfS
IDENTIFICATION DIVISION. 2Roc|)-47
PROGRAM-ID. HELLO-WORLD. ,YMp<C
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ENVIRONMENT DIVISION. Xqm::1(-(
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DATA DIVISION. MHC^8VL
_> *jH'
PROCEDURE DIVISION. !U~WK$BP
DISPLAY "Hello, world!". $
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STOP RUN. 8M`#pN^
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Common Lisp
({=gw9f
(format t "Hello world!~%") ;/rXQe1
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9,r rQQD_
DOS批处理 xcf%KXJf6
@echo off oGRhnP'PF+
echo "Hello, world!" M )2`+/4
G-.^O,%
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Eiffel i?F
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class HELLO_WORLD _\GC(
=Fr(9(
creation )6J9J+%bi
make ])!o5`ltZ
feature a0ObBe'
make is ;{"+g)u
local 81i655!Z
io:BASIC_IO L#
2+z@g
do 7fba-7-P
!!io ;hjwD
io.put_string("%N Hello, world!") CtS l
end -- make hBX!iukT|{
end -- class HELLO_WORLD LmnymcH
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Erlang F;<xnC{[
-module(hello). CLJ;<
-export([hello_world/0]). TBT:/Vfun
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hello_world() -> io:fwrite("Hello, World!\n"). 7!JQB
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2mGaD\?K
Forth qCnZhJ
." Hello, world!" CR wGP;Vbk
LMAE)]N
p ObX42
Fortran (X3Tav
WRITE(*,10) x"
L20}
10 FORMAT('Hello, World!') :FTMmW,>'
STOP eF3,2DDC
END {>)#HD
% V8U(z
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HTML 2P@sn!*{1
<HTML> uvG]1m#
<HEAD> dKxyA"@
<TITLE> Hello World! </TITLE> _`:1M2=
</HEAD> csW43&
<BODY> trp0V4b8
<p>Hello World!</p> [S>2ASj
</BODY> AGYc |;
</HTML> 7*Ej. HK
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HQ9+ suzZdkMA
H -3=#u_
?qWfup\S
W|g4z7Pb
INTERCAL 7M<'/s
PLEASE DO ,1 <- #13 F6{bjv2A
DO ,1 SUB #1 <- #238 /Id%_,}Kb
DO ,1 SUB #2 <- #112 [.uG5%fa
DO ,1 SUB #3 <- #112 K8UP,f2
DO ,1 SUB #4 <- #0 #/<&*Pu5t
DO ,1 SUB #5 <- #64 U5.LDv;
DO ,1 SUB #6 <- #238 /q`xCS
DO ,1 SUB #7 <- #26 0p}D(m2B
DO ,1 SUB #8 <- #248 2
Cv4=S
DO ,1 SUB #9 <- #168 YLzx<~E4a
DO ,1 SUB #10 <- #24 2-Ej4I~
DO ,1 SUB #11 <- #16 VYk!k3qS
DO ,1 SUB #12 <- #158 zIu
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DO ,1 SUB #13 <- #52
7B\Vs-d
PLEASE READ OUT ,1 zPjHsulK
PLEASE GIVE UP 9E>|=d|(d
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75/(??2
Java f m)pulz
public class Hello 'g
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{ A"G
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public static void main(String[] args) ^Uf]Q$uCjE
{ G'ei/Me6{
System.out.println("Hello, world!"); [Q/TlO t5
} ov_j4j>6P
} [8=vv7wS
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