“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。 i>s
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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》。 ^}B,0yUu'
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以下是用不同语言写成的Hello World程序的几个例子: ~~Ezt*lH
Ada h0@a"DqK
with Ada.Text_Io; use Ada.Text_Io; &Xqxuy
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procedure Hello is pX?3inQP%(
begin xI{4<m/0N
Put_Line ("Hello, world!"); '=n?^EPE3
end Hello; vjlN@
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汇编语言 Mzp<s<BX
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x86 CPU,DOS,TASM AcPLJ!y
MODEL SMALL Y(.e e%;,
IDEAL N8{jvat
STACK 100H og5VB
!i^"3!.l,]
DATASEG Cp6S2v I
HW DB 'Hello, world!$' 3I_^F&T
^H3N1eC,`F
CODESEG <gkE,e9
MOV AX, @data A iM ukd,
MOV DS, AX fY[Fwjj3
MOV DX, OFFSET HW d+D~NA[M
MOV AH, 09H ,X4+i8Yc
INT 21H U]=yCEb8p
MOV AX, 4C00H @MES.g
INT 21H &v{#yzM
END S\g9@g.
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x86 CPU,GNU/Linux,NASM XB7Aa)
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). CUu
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;Enter this into "hello.asm" then type: [a2]_]E%
;"nasm -f elf hello.asm" ]#)(D-i
;"ld hello.o -o hello" Q)DEcx-|,
;"./hello" g"m'
C6;
e= IdqkJ%
section .data ;data section declaration hCcI]#S&
msg db 'Hello World!',0AH 8tx*z"2S
len equ $-msg ;string length DM^0[3XuV5
o5o myMN
section .text ;code section declaration MJXnAIG?2
global _start ;entry point (start of execution) :y-;V
_start: mov edx,len ;string length An.
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mov ecx,msg ;string start D$hQ-K
mov ebx,1 ;file handle: stdout tO M$'0u
mov eax,4 ;sys_write <fvu)
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int 80h ;kernel system call g,Ob/g8uc
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mov ebx,0 ;return value >dl5^
mov eax,1 ;sys_exit ,*|Q=
int 80h ;kernel system call &=g3J4$z
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x86 CPU,Windows,MASM32 >v+1v
.386 z%8`F%2
.model flat,stdcall N%dY.Fk
option casemap:none ]-\68b N
;Include 文件定义 J@5iD
include windows.inc ?'> .>
include user32.inc A9xeOy8e
includelib user32.lib \zBi-GI7
include kernel32.inc &-=~8
includelib kernel32.lib 7{m>W!
;数据段 w+)${|N?
.data 1#d2 +J*
szCaption db 'A MessageBox!',0 :r
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szText db 'Hello,world!',0 vbid>$%
;代码段 V4,Gt]4
.code ]Y[N=G
start: Nf]?hfJ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK a=MN:s?Fc0
invoke ExitProcess,NULL syX?O'xJ
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Ae>+Fcv
end start oMbd1uus
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AWK >=N-P<%
BEGIN { print "Hello, world!" } _Raf7 W
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BASIC Ow;thNN
传统版BASIC(例如GWBASIC): 8eB,$;i
W8& )UtWQ
10 PRINT "Hello, world!" fu!T4{2
20 END +R*DE5dz
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或在提示符输入: 9Q9{>d#"
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?"Hello, world!":END g
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现代版BASIC(例如Quick BASIC): ](JrEg$K
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Print "Hello, world!" mqZK1<r
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以下的语句在Quick BASIC中同样有效: 4Fp[94b
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? "Hello,world!" ,V1"Typ#<
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BCPL ,>B11Z}PH
GET "LIBHDR" |^1g*fy?
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LET START () BE $NR[U+
$( 7^#f)Vp
WRITES ("Hello, world!*N") X-nC2[tu'W
$) L$3 lsu!4n
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hT 1JEu
Befunge P#!N
"!dlrow olleH">v u$^tRz9
, _rB,N#{2R=
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Brainfuck [HYr |T
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Y&yfm/R u
+++++++++++++++.>.+++.------.--------.>+.>. y(QFf*J
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C t}_ #N'`
#include <stdio.h> :sg}e
T%) E!:}v
int main(void) <7Pp98si,u
{ O_1[KiZ
printf("Hello, world!\n"); V2}\]x'1
return 0; h*l$!nEN
} 1V1I[CxlX
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C++ DBHy%i
#include <iostream> 1`7zYW&L
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int main() RX>P-vp
{ lcZ.}
std::cout << "Hello, world!" << std::endl; qMJJB l
return 0; V#dga5*]
} sRD
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C++/CLI 0h@FHw2d
int main() x>[]Qk^?q
{ OtqFI!ns
System::Console::WriteLine("Hello, world!"); 4uIYX
} :_R:>n9 p
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C# (C Sharp) )cJ>&g4]
class HelloWorldApp ;yJ:W8U]+;
{ !CYC7HeF
public static void Main() [Iks8ZWr_
{ tON>wmN
System.Console.WriteLine("Hello, world!"); f(5(V
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} LQR2T5S/Q,
} ZkbE&7Z
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f,HUr% @
COBOL v(2N@s<%
IDENTIFICATION DIVISION. 7s(tAbPdB
PROGRAM-ID. HELLO-WORLD. W*C~Xba<
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ENVIRONMENT DIVISION. _nbr%PD,
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DATA DIVISION. ~29p|X<
aas.-NT
PROCEDURE DIVISION. k]@]a
DISPLAY "Hello, world!". "313eeIt%i
STOP RUN. \]9)%3I
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Common Lisp Y2
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(format t "Hello world!~%") 'h*jL@%TT
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BR2Gb~#T
DOS批处理 UD.bb
@echo off )j_El ]?
echo "Hello, world!" t2N W$
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Eiffel $GJT
class HELLO_WORLD Qz~uD'Rs/
%=aKW[uq]
creation 8`q7Yss6F
make ~r --dU
feature >@YefNX6
make is & LE5'.s
local -#|D>
io:BASIC_IO ^xZh@e5
do ]b4WfIu
!!io m@4Dz|
io.put_string("%N Hello, world!") y?$DDD
end -- make >fPo_@O
end -- class HELLO_WORLD d#ir=+o{h
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Erlang PVCoXOqh
-module(hello). Kgbm/L0XR*
-export([hello_world/0]). l:85 _E
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hello_world() -> io:fwrite("Hello, World!\n"). Rr)+M3'
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"/W[gP[y%
Forth 4QL>LK
." Hello, world!" CR *r7vDc
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Fortran K@D\5s|1|
WRITE(*,10) G95,J/w
10 FORMAT('Hello, World!') LFp "Waiv
STOP %oZ:Awx
END zzqJeIS
CD|[PkjW
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HTML \/A.j|by,>
<HTML> KpLmpK1
<HEAD> UX 1
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<TITLE> Hello World! </TITLE> *XVwTW[a
</HEAD> i|YS>Pw~j
<BODY> +.G"ool
<p>Hello World!</p> jlEz]@
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</BODY> gYpMwC{*d
</HTML> bDI%}k9#
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gq?:n.;TY
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G#M)5'Q]U
INTERCAL Jd2.j?P=
PLEASE DO ,1 <- #13 ~Bd=]a$mj
DO ,1 SUB #1 <- #238 ~(5r+Z}*`
DO ,1 SUB #2 <- #112 =bVPHrKNQ
DO ,1 SUB #3 <- #112 my=f}%k=
DO ,1 SUB #4 <- #0 <Au2e
DO ,1 SUB #5 <- #64 ]S|FK>U[
DO ,1 SUB #6 <- #238 ^)VwxH:s
DO ,1 SUB #7 <- #26 v9$!v^U"D
DO ,1 SUB #8 <- #248 r-2k<#^r
DO ,1 SUB #9 <- #168 x-^6U
DO ,1 SUB #10 <- #24 *6uccx7{
DO ,1 SUB #11 <- #16 Uv^\[
DO ,1 SUB #12 <- #158 1v o)]ff
DO ,1 SUB #13 <- #52 'j1e(wq
PLEASE READ OUT ,1 +^)v"@,VP
PLEASE GIVE UP ON ?Y
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Java W&z jb>0b0
public class Hello BFLef3~.0
{ yNTd_XPL
public static void main(String[] args) w =^.ICyb@
{ :Pud%}'
System.out.println("Hello, world!"); O&`.R|v
} NnZW@ln"|
} xO$P
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\P\Z<z7jy
JSP AeJ ;g
<% ]@q%dsz
out.print("Hello, world!"); 7#8Gn=g
%> gN&i&%*!
w~'xZ?
{.Tx70kn
MIXAL Hl*vS
TERM EQU 19 the MIX console device number AerU`^
ORIG 1000 start address _Hb;)9y
START OUT MSG(TERM) output data at address MSG tDByOml8Ix
HLT halt execution F7uhuqA]N
MSG ALF "MIXAL" y<r44a_!
ALF " HELL" 9kd.j@C
ALF "O WOR" e<'U8|}hc{
ALF "LD " }'jV/
END START end of the program EW5]!%
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Nuva u'@Ely
<..直接输出..> a97Csxf;7
Hello, world! Orc>.~+f%A
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<..或者..> -eYL*Pa
,%= '>A
<. j@g!R!7)
// 不带换行 !'PlDGD
? "Hello, world!" 7h1"^}M&
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// 或者 tnRJ#[Io
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// 带换行 MVuP
|&:n
?? 'Hello, world!' RD9Yk
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jrdtd6b}
OCaml eb7UoZw
let main () = %rFllb7
print_endline "Hello world!";; ,QL(i\
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Wlxk
Pascal 5YLho2h38!
program Hello; 5z[6rT=a
begin 7\ ZL
writeln('Hello, world!'); .n=xbx:=
end. ~{Ua92zV9
(77Dif0)'
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Perl P ]_Vz
#!/usr/local/bin/perl mlmnkgl
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print "Hello, world!\n"; j~Ff/O
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kz|[*%10
PHP
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<?php TR_(_Yd?36
print("Hello, world!"); n_ OUWvs
?> "vvFq ,c
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Pike =1_j aDp
#!/usr/local/bin/pike 2@4MC`&