“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
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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》。 ty8E;['
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以下是用不同语言写成的Hello World程序的几个例子: svMu85z
Ada 'Kd-A:K2g
with Ada.Text_Io; use Ada.Text_Io; dRBWJ/ 1T
procedure Hello is e)|5P
begin
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Put_Line ("Hello, world!"); 'NDr$Qc3
end Hello; r^,"OM]
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汇编语言 y.::d9v
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x86 CPU,DOS,TASM l^rQo_alk
MODEL SMALL D~ 7W
IDEAL FMC]KXSd
STACK 100H {G{>Qa|
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DATASEG v+'*.Iv:
HW DB 'Hello, world!$' {%6g6?=j
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CODESEG <,Jx3yq
MOV AX, @data Oki{)Ssy
MOV DS, AX "fu@2y4^
MOV DX, OFFSET HW *4c5b'u
MOV AH, 09H =lx~tSiS
INT 21H c4}|a1R\=
MOV AX, 4C00H ~zQxfl/
INT 21H xU
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END {6>$w/+~
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x86 CPU,GNU/Linux,NASM B\+uRiD8w
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 18>v\Hi<
;Enter this into "hello.asm" then type: K8h\T4
;"nasm -f elf hello.asm" W?du ]
;"ld hello.o -o hello" JG{`tTu
;"./hello" (dHjf;
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section .data ;data section declaration 2Vxx
msg db 'Hello World!',0AH c;88Wb<|W
len equ $-msg ;string length RJdijj
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section .text ;code section declaration [iC]Wh%
global _start ;entry point (start of execution) .L.9e#?3
_start: mov edx,len ;string length ?B<.d8i
mov ecx,msg ;string start Myh?=:1~(c
mov ebx,1 ;file handle: stdout f\H1$q\p\
mov eax,4 ;sys_write -f"{%<Q
int 80h ;kernel system call /?*ut&hwv
&a'LOq+r'
mov ebx,0 ;return value ,vuC0{C^
mov eax,1 ;sys_exit j k&\{
int 80h ;kernel system call @I?:x4
j)#GoU=w
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x86 CPU,Windows,MASM32 }U|Vpgd!
.386 C4gzg
.model flat,stdcall ~Jlq.S'
option casemap:none Nf}i/
;Include 文件定义 }Zfi/ ^0U
include windows.inc L),bPfz
include user32.inc r"dR}S.Uf
includelib user32.lib *TPWLR ^
include kernel32.inc Y /l~R7
includelib kernel32.lib GF*uDJ Kp
;数据段 9rT"_d#
.data q XB E3
szCaption db 'A MessageBox!',0 kR{$&cE^
szText db 'Hello,world!',0 '30JJ0
;代码段 w^}*<q\
.code 2%)~E50U
start: @)@tIhw
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ){KrBaGa4
invoke ExitProcess,NULL tMyMA}`
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> l0tFj>q"
end start t|*UlTLm
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AWK 3V<c4'O\W
BEGIN { print "Hello, world!" } 2m9qg-W
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BASIC $_gv(&ZT
传统版BASIC(例如GWBASIC): $9Gra#
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10 PRINT "Hello, world!" )M@^Z(W/a
20 END F1p|^hYDW
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或在提示符输入: 97pnq1b
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?"Hello, world!":END zbfe=J4c
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现代版BASIC(例如Quick BASIC): (Z8wMy&:
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Print "Hello, world!" ?<^^.Si
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以下的语句在Quick BASIC中同样有效: #z}0]GJKj
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? "Hello,world!" EF;B)y=
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BCPL &LQfs4}a,
GET "LIBHDR" ,2P/[ :
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LET START () BE m;PTO$--
$( ^BP4l_rO9
WRITES ("Hello, world!*N") 1+Vei<H$
$) MPLeqk$;
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Befunge .:tR*Kst`7
"!dlrow olleH">v "WH
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, wkT4R\H >
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Brainfuck P#"_H}qC*
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< T7N\b]?j@Y
+++++++++++++++.>.+++.------.--------.>+.>. ,QLy}=N
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C !ED,'d%J
#include <stdio.h> 5xa!L@)`wF
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int main(void) J$-1odL0Z
{ jI$7vmO
printf("Hello, world!\n"); ZL9|/
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return 0; ,.&D{$1W
} 3w! NTvp
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C++ Az/P;C=
#include <iostream> k0xm-
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int main() 9xL`i-7]
{ 2-^['R
std::cout << "Hello, world!" << std::endl; w7~&Xxa/
return 0; _HkQv6fXpE
} F0'8n6zj
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C++/CLI =-G4BQ
int main() xww\L
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{ OGW0lnQ/
System::Console::WriteLine("Hello, world!"); u2*."W\
} $C8s
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C# (C Sharp) .G|U#%"6x
class HelloWorldApp o^u}(wZ{
{ =E&1e;_xlE
public static void Main() e(9K.3@{
{ e{.P2rnh
System.Console.WriteLine("Hello, world!"); xP 3>8Y
} SnoEi~Da
} ,;yaYF6|/
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COBOL S4{\5ulr7
IDENTIFICATION DIVISION. \G6V -W
PROGRAM-ID. HELLO-WORLD. +Xmza8T9
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ENVIRONMENT DIVISION. b+$-f:mj
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DATA DIVISION. T=fVD8
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PROCEDURE DIVISION. ShOB"J-
DISPLAY "Hello, world!". %i&\X[
STOP RUN. P}-S[[b73s
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Common Lisp UDb
(format t "Hello world!~%") V}Pv}j:;
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DOS批处理 `>`{DEDx{5
@echo off EHt(!;?q
echo "Hello, world!" &y ~GTEP
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Eiffel /-g%IeF
class HELLO_WORLD $oZV 54
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creation T7*p!0
make M5+K[Ir/y9
feature j g_;pn
make is QB7^8O!<
local fJn4'Q*U
io:BASIC_IO wodff_l
do wr2F]1bh@
!!io 5I5#LQv0
io.put_string("%N Hello, world!") I@q4D1g
end -- make ae]
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end -- class HELLO_WORLD J(`(PYo\i
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Erlang d C6t+
-module(hello). o[nr)
-export([hello_world/0]). qox@_
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hello_world() -> io:fwrite("Hello, World!\n"). bd`}2vr
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0j[%L!hny
Forth e'dZ2;X$zo
." Hello, world!" CR /x&52~X5-
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Fortran :UDe\zcd"
WRITE(*,10) *l'5z)]
10 FORMAT('Hello, World!') tVAH\*a,/
STOP wU5= '
END QBTjiaYGa'
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HTML ['@R]Si"!
<HTML> efm#:>H
<HEAD> Qs\!Kk@
<TITLE> Hello World! </TITLE> [\)irCDv
</HEAD> gOn^}%4.I
<BODY> (%|L23
<p>Hello World!</p> 8MCSU'uQ
</BODY> XNB4KjT
</HTML> CGCSfoS9f
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gK-$y9]~+
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gz`P~7-w:
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INTERCAL 1&JB@F9!
PLEASE DO ,1 <- #13 _6MNEoy?
DO ,1 SUB #1 <- #238 _<;westq
DO ,1 SUB #2 <- #112 {@3p^b*E)1
DO ,1 SUB #3 <- #112 8Sg:HU\
DO ,1 SUB #4 <- #0 > 0NDlS%Q:
DO ,1 SUB #5 <- #64 tfq; KR
DO ,1 SUB #6 <- #238 \ dZD2e4
DO ,1 SUB #7 <- #26 )R"deb=s
DO ,1 SUB #8 <- #248 !8OUH6{2
DO ,1 SUB #9 <- #168 YX6[m6LU
DO ,1 SUB #10 <- #24 F$>^pw
DO ,1 SUB #11 <- #16 RyN?Sn5)
DO ,1 SUB #12 <- #158 ;NrU|g/ksX
DO ,1 SUB #13 <- #52 l|~SVk|
PLEASE READ OUT ,1 -hpMd/F
PLEASE GIVE UP c!>",rce
T\$r|
oA$]%
Java I=wA)Bli1p
public class Hello ewzZb*\
{ J l9w/T
public static void main(String[] args) )x&OdFX
{ isV9nWo$
System.out.println("Hello, world!"); >,QW74o
} _;`g*Kx
} ]iVoF N}^
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