“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。 q;a`*gX^
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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》。 O1pBr=+j+{
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以下是用不同语言写成的Hello World程序的几个例子: $\l7aA5~
Ada *a* \E
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with Ada.Text_Io; use Ada.Text_Io; PR=:3-#R
procedure Hello is *R.Q!Lv+
begin c#M'Mye
Put_Line ("Hello, world!"); aJlSIw*Q,
end Hello; w?6"`Mo
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汇编语言 A-e#&pJ
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x86 CPU,DOS,TASM Ym+k \h
MODEL SMALL l\7N R
IDEAL l$D]*_ jc,
STACK 100H kRs(A~ngc
`An`"$z
DATASEG *[jG^w0z8~
HW DB 'Hello, world!$' BX&bhWYGFX
(KR$PLxDK
CODESEG ;u!qu$O
MOV AX, @data rmmN2+H
MOV DS, AX MVU5+wX
MOV DX, OFFSET HW u9rlNmf$
MOV AH, 09H BuMBnbT
INT 21H j(mbUB*
MOV AX, 4C00H iLw O4i
INT 21H iErY2~?
END :U!kn b"/>
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x86 CPU,GNU/Linux,NASM \G}EI|Wo
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !a?$
;Enter this into "hello.asm" then type: ^c3~CD5H
3
;"nasm -f elf hello.asm" VE5w!of
;"ld hello.o -o hello" _cdrz)T
;"./hello" ]2\|<.
?}"$[6.
section .data ;data section declaration GlYNC&,VL
msg db 'Hello World!',0AH (&R/ns~
len equ $-msg ;string length 5BnO-[3
>2l1t}"\
section .text ;code section declaration /tI8JXcUK
global _start ;entry point (start of execution) Q!8AFLff4
_start: mov edx,len ;string length 8P5yaS_
mov ecx,msg ;string start f tW-
mov ebx,1 ;file handle: stdout AE!DftI
mov eax,4 ;sys_write - &u]B$
int 80h ;kernel system call -
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gSQq
mov ebx,0 ;return value Ik2yIf5d
mov eax,1 ;sys_exit @\0U`*]^)
int 80h ;kernel system call :VpRpj4f
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x86 CPU,Windows,MASM32 ,:POo^!/fT
.386 D/QSC]"
.model flat,stdcall 9IJBK
option casemap:none _'DT)%K
;Include 文件定义 |#9Nu9ak
include windows.inc *R1m=
include user32.inc ;NNYJqWd^]
includelib user32.lib ybLl[K(D=
include kernel32.inc T-e'r
includelib kernel32.lib nmIos]B
;数据段 _8x:%$
.data Tbf't^Ot$
szCaption db 'A MessageBox!',0 lId}sf
szText db 'Hello,world!',0 jb;!"HC
;代码段 _9 yb5_
.code j}9][Fm1*
start: $yxwB/ O(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK r}351S5(
invoke ExitProcess,NULL ipzv]c&
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> OsI>gX>
end start yOR]r+8
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BEGIN { print "Hello, world!" } I`hltJM'
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BASIC 5cahbx1"
传统版BASIC(例如GWBASIC): "^M/iv(
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10 PRINT "Hello, world!" xvo""R/g8
20 END %f[0&)1!.v
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或在提示符输入: %L;z ~C
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?"Hello, world!":END p;8I@~dh
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现代版BASIC(例如Quick BASIC): _0HCtx ;
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Print "Hello, world!" r 0mA
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以下的语句在Quick BASIC中同样有效: }
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? "Hello,world!" T''PzY!Qf
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BCPL VtM:~|v
GET "LIBHDR" &Bn>
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LET START () BE Oe#*-
$( k@}?!V*l
WRITES ("Hello, world!*N") R0yPmh,{
$) \/qo2'V
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_ ^ JhncL
Befunge a"ct"g=
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, $*k(h|XfwW
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Brainfuck QaVxP1V#U
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ]t2zwHo#
+++++++++++++++.>.+++.------.--------.>+.>. /5**2Kgv1
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C Q4;%[7LU
#include <stdio.h> 9`a1xnL
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int main(void) ~8oti4
{ y3Z\ Y[
printf("Hello, world!\n"); S]"U(JmW\
return 0; ;nSOeAF)Q
} T"bH{|:%*=
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C++ =/#+,
#include <iostream> ^CBc~um2
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int main() /%9Ge AAs
{ K|Cb6''
std::cout << "Hello, world!" << std::endl; t| cL!
return 0; #9/^)^k
} @H83Ad
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C++/CLI &i5MRw_]]
int main() cWU9mzsE
{ E2nsBP=5C
System::Console::WriteLine("Hello, world!"); <Pnz$nH:e
} au;ZAXM|
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C# (C Sharp) svWQk9d
class HelloWorldApp q}+Fm?B
{ [-p?gyl
public static void Main() >D5WAQ>b
{ '
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System.Console.WriteLine("Hello, world!"); L60Sc
} xm*6I
} DX b=Ku
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COBOL oD8X]R,
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IDENTIFICATION DIVISION. N ]|P||fC
PROGRAM-ID. HELLO-WORLD. *=)kR7,]9d
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ENVIRONMENT DIVISION. U?e.)G
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DATA DIVISION. r"hogmFD;
]m=2 $mK
PROCEDURE DIVISION. k.6gX<T
DISPLAY "Hello, world!". v2KK%Qy
STOP RUN. %4I13|<A`
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Common Lisp ,b'QL6>`
(format t "Hello world!~%") 64 83v'
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&<$YR~g5j$
DOS批处理 iji2gWV}h
@echo off AD@-H0Y
echo "Hello, world!" %$ ^eY'-'
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Eiffel 7T/hmVi_
class HELLO_WORLD cqZuG}VR
t +h}hL
creation rZkl0Y;n\
make `S:LuU8e
feature Tq,xW
make is g"|/^G_6S
local t<H@c9{;*
io:BASIC_IO g?>V4WF
do hw)#TEt
!!io Y:KIaYkk
io.put_string("%N Hello, world!") /PTk296@
end -- make +H6cZ,
end -- class HELLO_WORLD
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Erlang .e1Yd8
-module(hello). %Z!3[.%F
-export([hello_world/0]). "D[/o8Hk
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hello_world() -> io:fwrite("Hello, World!\n"). H?$gHZPI
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}
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Forth q-R'5p\C?|
." Hello, world!" CR 2x<4&^
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Fortran 4elA<<
WRITE(*,10) r"_SL!,^
10 FORMAT('Hello, World!') Z?j4WJy-[
STOP ^Y?Y5`!Q
END GPLq$^AH
1 TA\6a}
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HTML f,0,:)
<HTML> 6
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<HEAD> mz?1J4rt
<TITLE> Hello World! </TITLE> CA5q(ID_
</HEAD> j*#k%;c
<BODY> r0j+P%
<p>Hello World!</p> 5KRI}f
</BODY> =5u;\b>*
</HTML> S?e*<s9k
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mt*/%>@7R
INTERCAL WYY&MHp
PLEASE DO ,1 <- #13 U~s-'-C/
DO ,1 SUB #1 <- #238 {bMOT*X=A
DO ,1 SUB #2 <- #112 yR4++yk
DO ,1 SUB #3 <- #112 o6c>sh
DO ,1 SUB #4 <- #0 ,@r 0-gL
DO ,1 SUB #5 <- #64 ;`:A(yN]T
DO ,1 SUB #6 <- #238 %w#8t#[,6
DO ,1 SUB #7 <- #26 7xoq:oP-}N
DO ,1 SUB #8 <- #248 YW'l),Z
DO ,1 SUB #9 <- #168 OoOr@5g
DO ,1 SUB #10 <- #24 Hwiftx
DO ,1 SUB #11 <- #16 h7cE"m
DO ,1 SUB #12 <- #158 -cL wjI
DO ,1 SUB #13 <- #52 Zil<*(kv{
PLEASE READ OUT ,1 Rs;Y|W4'
PLEASE GIVE UP IXof-I%8
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Java 1y7FvD~ v
public class Hello TDZ p1zpXb
{ {RHa1wc
public static void main(String[] args) Ys+NIV#Q
{ NkY7Hg0
System.out.println("Hello, world!"); JHCXUT-r{
} ;$/]6@bqB
} 4d;.p1ro
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JSP hd~0qK
<% 4'G osQ85
out.print("Hello, world!"); ">x"BP
%> H rI(uZ]
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+ 3c (CTz
MIXAL yLEAbd%+
TERM EQU 19 the MIX console device number !]2`dp\!
ORIG 1000 start address R-OQ(]<*
START OUT MSG(TERM) output data at address MSG ;kR+jC(
HLT halt execution \CVrLn;}
MSG ALF "MIXAL" ~__rI-/_
ALF " HELL" Gc2:^FVlh
ALF "O WOR" B(,j*,f
ALF "LD " [J
+5
END START end of the program ;>r
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Nuva $64sf?aZ>#
<..直接输出..> OSIf>1
Hello, world! Ob@HzXH
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<..或者..> 0i~?^sT'
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<. ]!v\whZ>
// 不带换行 dlCmSCp%
? "Hello, world!" /A1qTG=Br
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// 或者 -I.BQ
!<= ^&\A
// 带换行 kWbD?i-
?? 'Hello, world!' OTD<3Q
q
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~vB dq Yj
iG+=whvL
OCaml Z!*k 0<Z
let main () = I;+>@Cn(g<
print_endline "Hello world!";; Oz-@e%8L
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qv)%)n
Pascal b{a\j%
program Hello; 5~{s-Ms
begin wPl9%
writeln('Hello, world!'); kS<9cy[O
end. ,nSapmg
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-~ H?R
Perl i^}ib
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#!/usr/local/bin/perl C(&3L[
print "Hello, world!\n"; 9F2MCqvcm
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g]jCR*]
PHP 1)J'
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<?php yQE9S+%M
print("Hello, world!"); (x140_TH~
?> gp NAM"
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Pike lt& c/xi_
#!/usr/local/bin/pike C~R,,
int main() d /lV+yZ
{ >;+q,U}
write("Hello, world!\n"); S3gd'Bahq
return 0; 2-beq<I
} KEo?Cy?%ff
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1
%H3
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PL/I 2>/}-a
Test: procedure options(main); XvI Y=~
declare My_String char(20) varying initialize('Hello, world!'); qL~|bfN
put skip list(My_String); 7uq^TO>9f
end Test; 5U6b\jxX
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=i>i,>bv
Prolog EM!9_8 f
goal \?"p]&2UcB
write("hello,world!"). @P/6NMjZ^
!YIW8SP)
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Python ?xw0kXK4
#!/usr/local/bin/python I8VCR8q
print "Hello, world!" Lc_cB`
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Wd?=RO`a
REXX N `[ ?db-%
say "Hello, world!" + lZvj=gW
Aaz2._:/-m
Z4369
Ruby MY l9 &8
#!/usr/bin/ruby e#(X++G
print "Hello, world!\n" dWiX_&g
U &RZx&W
}s:~E2?In
Scheme =h|xlT
(display "Hello, world!") v0KJKrliGO
(newline) lQ#='Jqfp
Zw_'u=r
>
d0;<Cw~Tl
sed (需要至少一行输入) HM &"2c
sed -ne '1s/.*/Hello, world!/p'
Ww=b{lUD
6/.cS4
]MnQ3bWq"j
Smalltalk h_15 " rd
Transcript show: 'Hello, world!' Sh\Jm*5
h6 Cqc}P
:H>0/^Mg0
SNOBOL F~?|d0
OUTPUT = "Hello, world!" E<\\/Q%w
END O3tw@ &k
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SQL pyp0SGCM:
create table MESSAGE (TEXT char(15)); m(IyW734I
insert into MESSAGE (TEXT) values ('Hello, world!'); y#i` i
select TEXT from MESSAGE; _ O;R
drop table MESSAGE; #Ve@D@d[
&/(JIWc1su
=b#:j:r
Tcl WJy\{YAG
#!/usr/local/bin/tcl Dq+S'x~>
puts "Hello, world!" 8~AL+*hn
v(p<88.!m
QypUBf
TScript 3EH7HW
? "Hello, world!" ;*cCaB0u
#]r'?GN
]A:8x`z#F
Turing V/BU(`~i
put "Hello, world!" avW33owb@
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Bo8NY!
UNIX-style shell NRazI_Z
程序中的/bin/sh可改为您使用的shell K9ek
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#!/bin/sh X'j9l4Ph7
echo 'Hello, world!' o8~<t]Ejw
DB(!*6#?
myF/_o&Ty
GUI A45!hhf
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Delphi 4+MaV<!tU^
program HelloWorld; O]KQ]zN
uses ]I\9S{?
Dialogs; cp6I]#X
begin d6)+d9?<