“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。 1~_]"Y'
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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》。 a#mdD:,cF
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以下是用不同语言写成的Hello World程序的几个例子: air{1="<-
Ada ?C4a,%
with Ada.Text_Io; use Ada.Text_Io; cW3;5
procedure Hello is .*y{[."!
begin b^%4_[uRu
Put_Line ("Hello, world!"); Qs4Jl ;Y _
end Hello; zg^5cHP\
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汇编语言 ]P 2M
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x86 CPU,DOS,TASM ukZL
MODEL SMALL yyZjMnuD
IDEAL 6vmkDL8{A8
STACK 100H 4S9AXE6
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a@NYi6
DATASEG 6v.*%E*P
HW DB 'Hello, world!$' {9)LHX7dN
< ' T6k\
CODESEG VGe/;&1h
MOV AX, @data |&C.P?q
MOV DS, AX $<T)_g
MOV DX, OFFSET HW xo?f90+(
MOV AH, 09H fE M8/bhq
INT 21H fPspJug
MOV AX, 4C00H Q PGssQR6
INT 21H s=28.
END }-Zfljj
;}:"[B3$
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x86 CPU,GNU/Linux,NASM (?~F}u
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). cU*7E39
;Enter this into "hello.asm" then type: gmrjCLj
;"nasm -f elf hello.asm" KUB"@wUr
;"ld hello.o -o hello" rj,Sk~0Q
;"./hello" Amz7j8zJ
=`{!" 6a
section .data ;data section declaration S6Kaw
msg db 'Hello World!',0AH N>@AsI
len equ $-msg ;string length [=XsI]B\
k :af
section .text ;code section declaration bu\,2t}B
global _start ;entry point (start of execution) l%;)0gT
_start: mov edx,len ;string length ydBoZ3 }
mov ecx,msg ;string start %M ~X:A;4
mov ebx,1 ;file handle: stdout Inr ~9hz
mov eax,4 ;sys_write v6iV#yz3(
int 80h ;kernel system call 'e0qdY`
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mov ebx,0 ;return value Th@L68
mov eax,1 ;sys_exit yzXwxi1#
int 80h ;kernel system call l=kgRh
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x86 CPU,Windows,MASM32 RN!oflb
.386 1{"e'[L
.model flat,stdcall Lw-)ijBW
option casemap:none cC>.`1:
;Include 文件定义 !a?o9<V
include windows.inc 3WaYeol`
include user32.inc I:='LH,
includelib user32.lib #{<Jm?sU
include kernel32.inc 2,dGRf
includelib kernel32.lib [7L1y) I(
;数据段 ?EKYKLwr
.data a_FJN zL
szCaption db 'A MessageBox!',0 {iHC;a5gb$
szText db 'Hello,world!',0 V18w
;代码段 /&dC? bY
.code y8
`H*s@
start: *bwLih!}H
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !sfUrUu
invoke ExitProcess,NULL u9'4q<>&
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> E]"ePdZZ/
end start 3\6jzD
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AWK pH)V:BmJ
BEGIN { print "Hello, world!" } 8`'_ckIgr
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dZv-lMYBE
BASIC 6rdm=8WFA
传统版BASIC(例如GWBASIC): j2tw`*S+
.rax`@\8
10 PRINT "Hello, world!" \'j%q\Bl;
20 END llQDZ}T
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或在提示符输入: >m%\SuXq
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?"Hello, world!":END ~9 K4]5K-
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现代版BASIC(例如Quick BASIC): =7#)8p[
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Print "Hello, world!" c5^i5de
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以下的语句在Quick BASIC中同样有效: BL,YJM(y
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? "Hello,world!" ,I'Y)SLx
\y#gh95
N\ GBjr-d
BCPL c~z{/L
GET "LIBHDR" dIMs{!
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LET START () BE :6Bk<
$( PK!=3fK4\F
WRITES ("Hello, world!*N") ^yjc"r%B
$) &!Y^DR/
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4*d_2:|u
Befunge hDzKB))<w
"!dlrow olleH">v 8V^gOUF.
, ,SS@]9A&
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Brainfuck 8[
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< t~Ds)
+++++++++++++++.>.+++.------.--------.>+.>. CKrh14ul
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C n%@xnB$ZX
#include <stdio.h> )T
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int main(void) pOGVD
{ Y
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printf("Hello, world!\n"); \O72PC+
return 0; }JAg<qy}
} $OmcEd
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C++
//f[%j*>
#include <iostream> %GjF;dJ
h"M}Iz~|V?
int main() `N
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{ p*n$iroy_{
std::cout << "Hello, world!" << std::endl; V'\4sPt
return 0; a'XCT@B
} P[aB}<1f0
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C++/CLI IiS1ubNtZ
int main() :n{rVn}G
{ @ U:WWTzf
System::Console::WriteLine("Hello, world!"); sw8Ic\vT
} o#Rao#bD:
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C# (C Sharp) ,5H$Tm,6\S
class HelloWorldApp ayHI(4!$j
{ |]Pigi7y-
public static void Main() #li;L
{ ^FF{71;
System.Console.WriteLine("Hello, world!"); [}}oHm3&
} !W{|7Es?.
} |4x&f!%m
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COBOL `:?padZG
IDENTIFICATION DIVISION. fh:=ja?bM3
PROGRAM-ID. HELLO-WORLD. X
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**dGK_^T0
ENVIRONMENT DIVISION. Nbuaw[[iz
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DATA DIVISION. 0XvMaQXQF
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PROCEDURE DIVISION. +!'6:F
DISPLAY "Hello, world!". Uw<Lt"ls.
STOP RUN. ZO
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=KMd! $J\
Common Lisp /Y|9!{.
(format t "Hello world!~%") GcHWalm
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g}L2\i688
DOS批处理 ;{j:5+'
@echo off K\,&wU
echo "Hello, world!" ex&&7$CXc
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laKMQLtv
Eiffel 4VD'<`R[
class HELLO_WORLD ezC55nm
eNi.d;8F
creation %ktU 51o
make Y')in7g
feature ukzXQe;l1
make is _av%`bb&z9
local bXC;6xZV
io:BASIC_IO b>&kL
do ,r:.
3.
!!io FzFY2h;n]B
io.put_string("%N Hello, world!") :q0C$xF
end -- make I `p44}D3
end -- class HELLO_WORLD b;Q
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w9H%u0V?
Erlang 3Akb|r
-module(hello). DyYl97+Z?
-export([hello_world/0]). <b{Le{QJ*
}m\
hello_world() -> io:fwrite("Hello, World!\n"). a:H}c9$%
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kc1 *@<L6
Forth ].7)^
." Hello, world!" CR =/Vr,y$
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Fortran a~:'OW:Q
WRITE(*,10) H:a(&Zb
10 FORMAT('Hello, World!') vEW;~FLd
STOP rqT@i(i
END By:A9s
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CIYTs,u#
HTML ^mkplp
a
<HTML> d=Q0/sI&
<HEAD> L`yS'
<TITLE> Hello World! </TITLE> - "h
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</HEAD> q}1AV7$Ai
<BODY> i*nNu-g
<p>Hello World!</p> q@r8V&-<
</BODY> m:ITyQ+
</HTML> z*I=
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H ^#vWdOlt
C(xdiQJh
h9 [ov)
INTERCAL ZYc)_Og
PLEASE DO ,1 <- #13 Rb',"` 7
DO ,1 SUB #1 <- #238 ceyZ4M
DO ,1 SUB #2 <- #112 0 \&4?
DO ,1 SUB #3 <- #112 vb\ UP&Ip
DO ,1 SUB #4 <- #0 Ub4j3`
DO ,1 SUB #5 <- #64 [gqV}Y"Md
DO ,1 SUB #6 <- #238 <