“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。 t-B5,,`
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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》。 SO4?3wg7
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以下是用不同语言写成的Hello World程序的几个例子: fG9 ;7KG
Ada `%; Hj _X}
with Ada.Text_Io; use Ada.Text_Io; KW-GVe%8f
procedure Hello is /oOZ>B%1s
begin {ppzg`G\
Put_Line ("Hello, world!"); FJ,"a%m/Q
end Hello; }C4wED.
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汇编语言 ,_iq$I;
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x86 CPU,DOS,TASM cX7 O*5C
MODEL SMALL }D># AFs6#
IDEAL o3]Lrzh
STACK 100H *:bexD H
P9`R~HO'`
DATASEG <aztbq?
HW DB 'Hello, world!$' L"bZ~'y
>3ax `8
CODESEG V6Mt;e)C
MOV AX, @data @`$'sU
MOV DS, AX J0V`sK
MOV DX, OFFSET HW 0civXZgj
MOV AH, 09H Y<L35
?
INT 21H w=pr?jt1:
MOV AX, 4C00H 'X<4";$mU
INT 21H m8@&-,T
END ]
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x86 CPU,GNU/Linux,NASM hw$!LTB2
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). d~1uK-L]*
;Enter this into "hello.asm" then type: b9-IrR4h
;"nasm -f elf hello.asm" nr2 Q[9~
;"ld hello.o -o hello" _Jy7` 4B.
;"./hello" )fHr]#v
N=AHS
section .data ;data section declaration U%q-#^A
msg db 'Hello World!',0AH F+"_]
len equ $-msg ;string length }}"pQ!Z
h PL]B_<
section .text ;code section declaration }R`Rqg-W
global _start ;entry point (start of execution) |lt]9>|
_start: mov edx,len ;string length ],_+J*
mov ecx,msg ;string start )/?H]o$NU
mov ebx,1 ;file handle: stdout c/Xg ARCO
mov eax,4 ;sys_write \?pyax8
int 80h ;kernel system call l+[:Cni
R&9FdM3K`:
mov ebx,0 ;return value lD[37U!
mov eax,1 ;sys_exit _0(%^5Y
int 80h ;kernel system call (`S^6-^
ia7<AwV
m8ts!6C
x86 CPU,Windows,MASM32 DmpT<SI+!
.386 s3HVX'
.model flat,stdcall -8xf}v~u
option casemap:none Wl |5EY
;Include 文件定义 As< B8e]
include windows.inc d2V X\
include user32.inc V\o7KF
includelib user32.lib f. "\~
include kernel32.inc xNzGp5H
includelib kernel32.lib N ai5!_'
;数据段 ?u|@,tQ[
.data 4q E95THB
szCaption db 'A MessageBox!',0 <q8@a0e@
szText db 'Hello,world!',0 q pCI[[
;代码段 _]-4d_&3(
.code C,An\lsT
start: nq)F$@
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK K#YQB3rX
invoke ExitProcess,NULL
;%9]G|*{
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> T1]?E]m{
end start 7Ml4u%?
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AWK EHk\Q\
BEGIN { print "Hello, world!" } HR}O:2'
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BASIC Ut;`6t
传统版BASIC(例如GWBASIC): ")T\_ME
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C7
10 PRINT "Hello, world!" O\6U2b~
20 END d'RvpoM
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或在提示符输入: {drc}BL_
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?"Hello, world!":END BDTL5N
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现代版BASIC(例如Quick BASIC): );$99t
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Print "Hello, world!" /8FmPCp}r
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以下的语句在Quick BASIC中同样有效: O$<>v\NC?
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? "Hello,world!" )th[fUC(
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BCPL uh)S;3|
GET "LIBHDR" >2'"}np*
w G %W{T$
LET START () BE c+ oi8G
$( TmsIyDcD~
WRITES ("Hello, world!*N") cJ;Nh>ey
$) k, HC"?K
j*jUcD*
*.DC(2:o!
Befunge ilA45@
"!dlrow olleH">v 0NXH449I=
, 5% 2A[B
^_@ }yz>(Pq
V
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Brainfuck ;2p+i/sVj
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< s6!6Oqh
+++++++++++++++.>.+++.------.--------.>+.>. !+eH8
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C `*C=R
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#include <stdio.h> ^[M{s(b
gc9R;B1
int main(void) E>!=~ 7.
{ bMyld&ga
printf("Hello, world!\n"); F5h/>
return 0; FSIiw#xzH
} CKYg!\g(:
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C++
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#include <iostream> Ld4U
:DD<0
int main() Lo%n{*if
{ \N,ox(f?gW
std::cout << "Hello, world!" << std::endl; 9)Fx;GxL
return 0; tt"<1
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} Nep4J;
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|$RNY``J
C++/CLI 2KlQ[z4Ir
int main() f"ZlJV a
{ $x0SWJ \G
System::Console::WriteLine("Hello, world!"); IH]9%d)
} Lc*>sOm9
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C# (C Sharp) (l{vlFWd
class HelloWorldApp '![oLy
{ *g/klK
public static void Main() b;k+N`
{ YW7W6mWspS
System.Console.WriteLine("Hello, world!"); xa>| k>I
} =>jp\A
} J:xGEa t
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dY*q[N/pO
COBOL [q<'ty
IDENTIFICATION DIVISION. kv+%
PROGRAM-ID. HELLO-WORLD.
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ENVIRONMENT DIVISION. $Ome]+0
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DATA DIVISION. S@qp_!
_plK(g-1J%
PROCEDURE DIVISION. zLI0RI.Pe
DISPLAY "Hello, world!". }z3j7I
STOP RUN. g'0CYY
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{ e|qQ4~h
Common Lisp |VfEp
(format t "Hello world!~%") 'h>uR|
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d*(aue=
DOS批处理 1b,a3w(:1
@echo off &!!*xv-z
echo "Hello, world!" 5> k:PKHL
@u~S!(7.Wi
baxZ>KNi
Eiffel )*')
class HELLO_WORLD I>c,Bo7
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creation N8<J'7%
make )^2eC<t
feature qd`e:s*%
make is >lI7]hbIs
local {SoI;o_>
io:BASIC_IO v4$/LUJZp
do 5]xuU.w'
!!io #c"eff
io.put_string("%N Hello, world!") d,<ni"
end -- make RNg?o[S
end -- class HELLO_WORLD 96=<phcwN[
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TP }a9-9?
Erlang ys_2?uv
-module(hello). Nw;qJ58@
-export([hello_world/0]). 0|3I^b
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hello_world() -> io:fwrite("Hello, World!\n"). 7& M-^Ev
SI (f&T(
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Forth |s8N
." Hello, world!" CR @[GV0*yz$
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+pofN-*%
Fortran >{#JIG.
WRITE(*,10) Q*ITs!~Z
10 FORMAT('Hello, World!') \pmS*Dt
STOP K$E3RB_F
END (In{GA7;
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_Q V=3UWP
HTML Di9RRHn&q
<HTML> j=\h|^gA
<HEAD> WI8}_){ d
<TITLE> Hello World! </TITLE> N0`9/lr|
</HEAD> [Nyt0l "z
<BODY> 2TK \pfD
<p>Hello World!</p> iL/c^(1
</BODY> UG| /Px ]
</HTML> SZ` 7t=I2
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hfB$4s9
V&Y`?Edc
INTERCAL
}{0}$#zu
PLEASE DO ,1 <- #13 7h'
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DO ,1 SUB #1 <- #238 ^2+Ex+
DO ,1 SUB #2 <- #112 UQVL)-Z
DO ,1 SUB #3 <- #112
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DO ,1 SUB #4 <- #0 pEyZH!W
DO ,1 SUB #5 <- #64 I&PJ[U#~a
DO ,1 SUB #6 <- #238 )f8>kz(
DO ,1 SUB #7 <- #26 h]7_
N,
DO ,1 SUB #8 <- #248 c:Ua\$)u3,
DO ,1 SUB #9 <- #168 h>Kx
DO ,1 SUB #10 <- #24 1"
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DO ,1 SUB #11 <- #16 Ple.fKu
DO ,1 SUB #12 <- #158 n ]%2Kx
DO ,1 SUB #13 <- #52 !$I~3_c
PLEASE READ OUT ,1 5epI'D
PLEASE GIVE UP a@}.96lStD
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Java IsXNAYj
public class Hello _[:6.oNjIe
{ "8za'@D"f
public static void main(String[] args) D%>Bj>xQD
{ 6)[moR{N1
System.out.println("Hello, world!"); "1o{mvCkR
} 7lC$UQ x8
} <,vIN,Kl8/
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kBUkE-~
JSP D?Oe";"/
<% ]4~Yi1]
out.print("Hello, world!"); +IZ=E
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%> VZ]iep
"&(/bdah?&
H4M=&"ll}
MIXAL Ae5A@4
TERM EQU 19 the MIX console device number 4KPnV+h"b
ORIG 1000 start address O>`k@X@9/
START OUT MSG(TERM) output data at address MSG kUBE+a6#
HLT halt execution ?<Qbp;WBo
MSG ALF "MIXAL" q ` S
~w
ALF " HELL" Y:*% [\R
ALF "O WOR" zDFNx:h
ALF "LD " kD#T_d
END START end of the program VoCg,gow
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Nuva @52#ZWy
<..直接输出..> w4
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2
Hello, world! S2X@t>u-
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<..或者..> KXKT5E$
i0M6;W1T
<. B>{%$@4
// 不带换行 (l5p_x
? "Hello, world!" Q0A4}
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// 或者 rgy
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