“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。 C U0YIL
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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》。 Pq$n5fZC!
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以下是用不同语言写成的Hello World程序的几个例子: ^\m![T\bX
Ada (bS&D/N.
with Ada.Text_Io; use Ada.Text_Io; ;uGv:$([g
procedure Hello is P%n>Tg80M
begin "AqB$^S9t
Put_Line ("Hello, world!"); ~xTt204S
end Hello; AbM'3Mkz
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汇编语言 ueNS='+m
8ao _i=&x
x86 CPU,DOS,TASM !4!~Lk=
MODEL SMALL \;Weizq5
IDEAL Y]a@j!
STACK 100H 0jfuBj5!
7tp36 TE
DATASEG U<XG{<2
HW DB 'Hello, world!$'
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|s_GlJV.
CODESEG /dHF6yW
MOV AX, @data eMzk3eOJ
MOV DS, AX !,PWb3S
MOV DX, OFFSET HW eO1lnO|
MOV AH, 09H (@YG~0
INT 21H 7zc^!LrW<
MOV AX, 4C00H zuCSj~
INT 21H =(^3}x
END \M-OC5fQv
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h+,@G,|D
x86 CPU,GNU/Linux,NASM 7>RY/O;Z,
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 6LhTBV
;Enter this into "hello.asm" then type: 2AdDIVYC
;"nasm -f elf hello.asm" Ys7]B9/1O
;"ld hello.o -o hello" 7EJ+c${e.-
;"./hello" =~gvZV-<
dN6?c'iN?2
section .data ;data section declaration Jl9k``r*
msg db 'Hello World!',0AH ~Ti'FhN
len equ $-msg ;string length TSWM
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section .text ;code section declaration "djw>|,N<
global _start ;entry point (start of execution) @)&=%
_start: mov edx,len ;string length tWa)_y
mov ecx,msg ;string start JOLaP@IPT
mov ebx,1 ;file handle: stdout EJ:%}HhA
mov eax,4 ;sys_write -JjM y X
int 80h ;kernel system call #PQB(=299P
9dUravC7
mov ebx,0 ;return value [ $n_6
mov eax,1 ;sys_exit q Xe8Kto
int 80h ;kernel system call 6N
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xzZ38xIhV
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x86 CPU,Windows,MASM32 j*jo@N|
.386 QR0Q{}wbqU
.model flat,stdcall krvp&+uX
option casemap:none vucxt }Ti
;Include 文件定义 f-n1I^|
include windows.inc D"?fn<2
include user32.inc 4'A!; ]:
includelib user32.lib 04l!:Tp,
include kernel32.inc >P@H#=
includelib kernel32.lib ~`\?"s:
;数据段 &3Szje
.data c>Xs&_
szCaption db 'A MessageBox!',0 b8SHg^}
szText db 'Hello,world!',0 4f'V8|QM{
;代码段 ;J2z p*|
.code ZR?yDgL
start: A.F738Zp{Z
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 4$S;(
invoke ExitProcess,NULL 'JfdV%M
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> o`P%&
end start $79=lEn,
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AWK ]d0tE?9
BEGIN { print "Hello, world!" } A
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BASIC _5# y06Q
传统版BASIC(例如GWBASIC): h=kh@},
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10 PRINT "Hello, world!" cy3B({PLy
20 END
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或在提示符输入: dA0.v+Foz"
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?"Hello, world!":END }\#Rot>Y
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现代版BASIC(例如Quick BASIC): -
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Print "Hello, world!" a]/>ra5{
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以下的语句在Quick BASIC中同样有效: O#k6' LN?
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? "Hello,world!" s6zNV4
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tj4VWJK
BCPL V=V:SlS9|
GET "LIBHDR" "zRoU$X
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LET START () BE ^[XYFQ TL
$( ;z:UN}
WRITES ("Hello, world!*N") &8_gRP
$) SNE#0L'}
? 1$fJ3
QxOjOKAG
Befunge %r6y
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"!dlrow olleH">v *B{j.{
p(
, Jesjtcy<*
^_@ <**y !2
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Pgus42f%
Brainfuck GBFtr
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ct,l^|0Hu8
+++++++++++++++.>.+++.------.--------.>+.>. ux3<l +jv^
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C (RZD'U/B
#include <stdio.h> WT`4s
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int main(void) J6G(_(d
{ qfz 8jY]
printf("Hello, world!\n"); c#]q^L\x
return 0; )R
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} e=;AfK
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C++ fpN-
o
#include <iostream> VZ](uF BY
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int main() ]t*[%4
{ e$uiJNS2
std::cout << "Hello, world!" << std::endl; TkO[rAC
return 0; -,{-bi
} 4bEf
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C++/CLI A4?+T+#d
int main() STw#lU) %(
{ u@%r
System::Console::WriteLine("Hello, world!"); [wB9s{CX
} LtKI3ou
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C# (C Sharp) i^!ez5z
class HelloWorldApp j]m|7]
{ I]y.8~xs
public static void Main() *d',Vuv&[
{ RTu4@7XP
System.Console.WriteLine("Hello, world!"); vuFBET,
} n%\
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} ?kz+R'
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COBOL 3o|I[!2.
IDENTIFICATION DIVISION. R1W}dRE}
PROGRAM-ID. HELLO-WORLD. zPKr/
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ENVIRONMENT DIVISION. :aIN9;
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DATA DIVISION. 7RvUH-S[
6k/U3&R
PROCEDURE DIVISION. :ECi+DxBK
DISPLAY "Hello, world!". =0'q!}._!
STOP RUN. )*d W=r/$V
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TV}}dw
Common Lisp M-uMZQe
(format t "Hello world!~%") tB'V
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DOS批处理 j` /&r*zNq
@echo off 8Z2.`(3c[
echo "Hello, world!" ^-M^gYBR
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%AnW~v
Eiffel U^Tp6vN d
class HELLO_WORLD #9LzY
2_t=P|Uo
creation e[t<<u3"
make '~wpP=<yyF
feature v1.q$ f^(
make is %:qoV0DR
local ~ekh1^evu
io:BASIC_IO kDz>r#%
do 5H:@8,B
!!io - n6jG}01b
io.put_string("%N Hello, world!") /MOnNnV
end -- make sst,dA V$
end -- class HELLO_WORLD m^{
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Erlang &4$oudn
-module(hello). rFL$QC2
-export([hello_world/0]). P l{QOR
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hello_world() -> io:fwrite("Hello, World!\n"). $X+u={]
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`HX3|w6W;
Forth S9Yt 1qb
." Hello, world!" CR fV ZW[9[
=J|sbY"]
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Fortran 77:'I
WRITE(*,10) PtKTm\,JL0
10 FORMAT('Hello, World!') =V^@%YIn
STOP MPRO
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END IvW@o1Q
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HTML Eqphd!\#6
<HTML> nJVp.*S
<HEAD> sS,#0Qt.
<TITLE> Hello World! </TITLE> -WT3)On
</HEAD> Z%v6xP.
<BODY> `X+j2TmS
<p>Hello World!</p> XS0V:<+,
</BODY> DcFCKji
</HTML> bx(w:]2
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H KZK,w#9.
X7e/:._SAH
~Ob8i 1S>
INTERCAL [(cL/_
PLEASE DO ,1 <- #13 H%Y%fQ~^
DO ,1 SUB #1 <- #238 &] 3:D
DO ,1 SUB #2 <- #112 POBpJg
DO ,1 SUB #3 <- #112
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DO ,1 SUB #4 <- #0 L<@&nx
DO ,1 SUB #5 <- #64 qWB%),`j>
DO ,1 SUB #6 <- #238 !P" ?
DO ,1 SUB #7 <- #26 @Qo,p
DO ,1 SUB #8 <- #248 6`"ZsO
DO ,1 SUB #9 <- #168 MxN]7
DO ,1 SUB #10 <- #24 zH+<bEo=1=
DO ,1 SUB #11 <- #16 j_pw^I$C
DO ,1 SUB #12 <- #158 y#r\b6
DO ,1 SUB #13 <- #52 X RRJ)}P
PLEASE READ OUT ,1 eG^z*`**
PLEASE GIVE UP gDhl-
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s=\7)n=,M
Java 4[H,3}p9H
public class Hello *dVD
{ 2;R/.xI6v
public static void main(String[] args) y<uE-4
{ ok=40B99T
System.out.println("Hello, world!"); <tQXK;
} XbXgU#%
} b.(XS?4o
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Wbs^(iUU}
JSP <
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<% k7b(QADqUU
out.print("Hello, world!"); oP,RlR
%> N
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UR\ZN@O
MIXAL *<CxFy;|
TERM EQU 19 the MIX console device number KY8^BjY@
ORIG 1000 start address j>V"hf
START OUT MSG(TERM) output data at address MSG z,os
MS
HLT halt execution TwwIt5_fN
MSG ALF "MIXAL" ;HT0w_,
ALF " HELL" =G[H,;W
ALF "O WOR" PgqECd)f
ALF "LD " H WOek"}Z[
END START end of the program yvS^2+jW
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=>.DD<g"
Nuva _=)!xnYf
<..直接输出..> AtuZF
Hello, world! 4g S[D
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<..或者..> i~(#S8U4d
DwT i_8m;
<. -wBnwn-
// 不带换行 Y]?Kqc
? "Hello, world!" s%FP6u7[i
kzW\z4f
// 或者 dzpj9[
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// 带换行 'wegipK~R
?? 'Hello, world!' [p2g_bI8yK
.> o&WRta>VP
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'et(:}i
OCaml `x5ll;"J
let main () = yo'q[YtP'
print_endline "Hello world!";; (}VuiNY<