“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。 eC
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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》。 &MmU
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以下是用不同语言写成的Hello World程序的几个例子: U8#xgz@
Ada @ufo$?D
with Ada.Text_Io; use Ada.Text_Io; {",MCu_V
procedure Hello is 2 gq$C"
begin GJi~y
Put_Line ("Hello, world!"); 05Fz@31~
end Hello; hjZ}C+=O
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汇编语言 JE5
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x86 CPU,DOS,TASM RhI;;Y#@
MODEL SMALL -b&{+= ^c
IDEAL v7
STACK 100H }/dRU${!
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DATASEG t22;87&|
HW DB 'Hello, world!$' I:&/`K4,x,
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CODESEG R9We/FhOY
MOV AX, @data p1pQU={<
MOV DS, AX u*S=[dq
MOV DX, OFFSET HW qIUfPA=/_
MOV AH, 09H [,EpN{l
INT 21H 6\7ncFO3
MOV AX, 4C00H gieN9S
INT 21H x} /,yaWZ
END uhH^>z
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x86 CPU,GNU/Linux,NASM <>xJn{f0c
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). -Lu)'+
;Enter this into "hello.asm" then type: %m,6}yt
;"nasm -f elf hello.asm" Kr'f- {
;"ld hello.o -o hello" c'6g*%2k
;"./hello" hD,:w%M
in <(g@Zg
section .data ;data section declaration $\o{_?}1
msg db 'Hello World!',0AH vgt]:$
len equ $-msg ;string length GY3 Wj
;rI@*An
section .text ;code section declaration 5V[oE\B
global _start ;entry point (start of execution) 5la>a}+!!h
_start: mov edx,len ;string length .JX EK
mov ecx,msg ;string start l5%G'1w#,j
mov ebx,1 ;file handle: stdout ,&PE6hn
mov eax,4 ;sys_write VLsxdwHgb
int 80h ;kernel system call C,V%B
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mov ebx,0 ;return value O-]mebTvw
mov eax,1 ;sys_exit G2 ]H6G$M
int 80h ;kernel system call !J1rRPV
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x86 CPU,Windows,MASM32 DBLk!~IF
.386 8bK|:B#6,
.model flat,stdcall _$NIp `d
option casemap:none mvW%
;Include 文件定义 w&$d* E
include windows.inc rt3qdk5U
include user32.inc #
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includelib user32.lib $CTSnlPq
include kernel32.inc *b *G2f^
includelib kernel32.lib e+v({^k
;数据段 n8=5-7UT
.data # ,uya2!)
szCaption db 'A MessageBox!',0 m p<1yY]
szText db 'Hello,world!',0 <99M@ cF
;代码段 0tISXu-
.code d\MLOXnLq;
start: "xcX'F^
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
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invoke ExitProcess,NULL m^' uipa\
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> !g~1&Uw1
end start 5Dp#u
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BEGIN { print "Hello, world!" } uZa9zs=}c
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BASIC M)*\a/6?{
传统版BASIC(例如GWBASIC): W)'*m-I
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10 PRINT "Hello, world!" WPZ?*Sx
20 END (npj_s!.C)
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或在提示符输入: *vgl*k?)
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?"Hello, world!":END i'd2[A.7I
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现代版BASIC(例如Quick BASIC): zX5!vaEv
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Print "Hello, world!" T|&[7%F3"
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以下的语句在Quick BASIC中同样有效: bNT9 H`P
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? "Hello,world!" aKU*j9A?;Z
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GET "LIBHDR" ) 9,
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LET START () BE l4T7'U>`
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WRITES ("Hello, world!*N") /TS=7J#
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Befunge L
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Brainfuck f7Ul(D:j\
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< q&C""!h^
+++++++++++++++.>.+++.------.--------.>+.>. !4] 9!<.k
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C </uOe.l>Q
#include <stdio.h> >-&R47G
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int main(void) rD>*j~_+P
{ !w
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printf("Hello, world!\n"); TAjh"JJIV
return 0; h|X^dQb]
} $ d?.2Kg
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C++ >u9Nz0?j
#include <iostream> tabT0
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int main() Wg`R_>qQSm
{ oyo(1>
std::cout << "Hello, world!" << std::endl; [qsEUc+Z.'
return 0; o\vBOp?hj
} \EseGgd21
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C++/CLI UGK*G y
int main() %`Z!4L
{ NnVnUgx
System::Console::WriteLine("Hello, world!"); (sWLhUgRX
} phO;c;y}
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C# (C Sharp) ctcS:<r/3@
class HelloWorldApp V|\7')Qq
{ qZ@s#UiB
public static void Main() w3jO6*_ M
{ vq34/c^
System.Console.WriteLine("Hello, world!"); F5S@I;
} 4&l10fR5
} uwlr9nB
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COBOL Haqm^Ky$
IDENTIFICATION DIVISION. >:lnt /N3
PROGRAM-ID. HELLO-WORLD. e}1uz3Rh
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ENVIRONMENT DIVISION. s+>:,U<A
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DATA DIVISION. #m={yck *
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PROCEDURE DIVISION. s(W|f|R
DISPLAY "Hello, world!". +{/
STOP RUN. >M&3Y
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Common Lisp 3Gkv4,w<
(format t "Hello world!~%") k5]j.V2f
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DOS批处理 Agrk|wPK
@echo off \6\<~UX^
echo "Hello, world!" :6%Z]tt
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Eiffel ~Jf{4*>y
class HELLO_WORLD ;J7F J3n
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creation jlxpt)0i
make 2#k5+?-c61
feature AlJ} >u
make is r(9~$_(vK
local XVU2T5s}
io:BASIC_IO z?35=%~w
do (y^vqMz
!!io 1) Zf3Y8
io.put_string("%N Hello, world!") TsTPj8GAl[
end -- make H=
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end -- class HELLO_WORLD p)+k=b
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Erlang ^Ox3XC
-module(hello). zl`h~}I
-export([hello_world/0]). Wl}&?v&@
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hello_world() -> io:fwrite("Hello, World!\n"). c [5KG}
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Forth /t(C>$ }p
." Hello, world!" CR &iV{:)L
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Fortran 2PG [7u^
WRITE(*,10) G$sA`<<
10 FORMAT('Hello, World!') 71l%MH
STOP TiH)5
END b5^OQH{v
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HTML 0x!2ihf
<HTML> Fgh]KQ/5
<HEAD> G%Lt.?m[
<TITLE> Hello World! </TITLE> b6*!ACY
</HEAD> t]e;;q=L.
<BODY> ZWS`\M
<p>Hello World!</p> %'T #pz
</BODY> N
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</HTML> 2@
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INTERCAL y8DhOlewQ
PLEASE DO ,1 <- #13 e zOj+vz
DO ,1 SUB #1 <- #238 }[xs~!2F
DO ,1 SUB #2 <- #112 <'g:T(t
DO ,1 SUB #3 <- #112 1</kTm/Qa
DO ,1 SUB #4 <- #0 [
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DO ,1 SUB #5 <- #64 oqeSG.1
DO ,1 SUB #6 <- #238 }C|dyyr
DO ,1 SUB #7 <- #26 )Dz+X9;g+
DO ,1 SUB #8 <- #248 '{B!6|"X
DO ,1 SUB #9 <- #168 -neKuj
DO ,1 SUB #10 <- #24 uAWM\?
DO ,1 SUB #11 <- #16 Zcc9e03
DO ,1 SUB #12 <- #158 `Ry]y"K
DO ,1 SUB #13 <- #52 jkvgoxY
PLEASE READ OUT ,1 tzh1s
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PLEASE GIVE UP 2r ZxSg
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Java ~_!F01s
public class Hello k%G1i-]4
{ Ft!],n-n*
public static void main(String[] args) Tq~=TSD
{ vz!s~cAt
System.out.println("Hello, world!"); 71{p+3Z&
} k|!EDze43?
} NrJKbk^4u/
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JSP _x5 3g
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<% tq|hPd<C
out.print("Hello, world!"); @i*|s~15
%> mN19WQ(r
lMbAs.!
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MIXAL piZJJYv t
TERM EQU 19 the MIX console device number Zg.&