“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。 J<dVTxK12
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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》。 N.]qU d
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以下是用不同语言写成的Hello World程序的几个例子: 0VGPEKRh
Ada v{jQek4
with Ada.Text_Io; use Ada.Text_Io; R@6zGZ1
procedure Hello is 0DmMG
begin we;G]`@?
Put_Line ("Hello, world!"); W81E!RyP`
end Hello; {6c2{@
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汇编语言 bVL9vNK
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x86 CPU,DOS,TASM L}}y'^(
MODEL SMALL :)_~w4&
IDEAL Z6_N$Z.A
STACK 100H '`XX
"_k3
c=L2%XPP
DATASEG ;M_o)OS3
HW DB 'Hello, world!$' Sk:ws&D1u
I-WhH>9
CODESEG ywb4LKD
MOV AX, @data B,K>rCZ/
MOV DS, AX HKqwE=NZ
MOV DX, OFFSET HW v}tag#f5>?
MOV AH, 09H |iR T!
]
INT 21H <0QH<4
MOV AX, 4C00H 9XRZ$j}L
INT 21H F^5?\
END LwK+:4$
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x86 CPU,GNU/Linux,NASM {iv<w8CU)
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Gu'rUo3Do
;Enter this into "hello.asm" then type: 5o6>T!
;"nasm -f elf hello.asm" SnFk>`
;"ld hello.o -o hello" gx&Tt
;"./hello" F8uNL)gKj)
FRS>KO=3
section .data ;data section declaration "bm
msg db 'Hello World!',0AH <IC~GqXv
len equ $-msg ;string length Rhe Re
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[
section .text ;code section declaration rN%F)
q#
global _start ;entry point (start of execution) e89Xb;;w
_start: mov edx,len ;string length #F*1V(!
mov ecx,msg ;string start (vB<%l.&
mov ebx,1 ;file handle: stdout RgGyoZ
mov eax,4 ;sys_write nIoPC[%_
int 80h ;kernel system call ;+tpvnV;]
k0
mov ebx,0 ;return value }j^\(2
mov eax,1 ;sys_exit sPps q
int 80h ;kernel system call S=nP[s
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x86 CPU,Windows,MASM32 qpsvi.S
.386 9!Ar`Io2@
.model flat,stdcall `d[1`P1i[
option casemap:none DF
g,Xa#
;Include 文件定义 GHHav12][
include windows.inc hTM[8 ~<^
include user32.inc 8-lOB
includelib user32.lib v9D22,K-
include kernel32.inc J%jB?2
1:o
includelib kernel32.lib *$"gaXI
;数据段 cI=r+OGk*
.data u@.>Z{h
szCaption db 'A MessageBox!',0 2PeR
szText db 'Hello,world!',0 W0C@9&pn6
;代码段 sj8~?O
.code K3' niGT
start: eh ,~F
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK (s1k$@d
invoke ExitProcess,NULL e+]6OV&+
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> HoLv`JA
end start cPl`2&p
je6CDF qw
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AWK Zo}y(N1K}
BEGIN { print "Hello, world!" } ErT{(t7
DEw8*MN
-\y-qHgb/
BASIC N~ ?{UOZd
传统版BASIC(例如GWBASIC): }HG#s4
if)Y9:{r^
10 PRINT "Hello, world!" Yyfq
20 END Y(+^;Y3U
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或在提示符输入: [<,~3oRu
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?"Hello, world!":END *1'`"D~
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现代版BASIC(例如Quick BASIC): \NGC$p n
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Print "Hello, world!" `Rdm-[&
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以下的语句在Quick BASIC中同样有效: s3 ;DG
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? "Hello,world!" NJ MJ
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BCPL BT_tOEL#
GET "LIBHDR" Gs*G<P"
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LET START () BE '>k{tPi.
$( g2R@`./S
WRITES ("Hello, world!*N") zD)pF1,7:8
$) o]LRzI
$ C0TD7=
5y}
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Befunge :+%Zh@u\
"!dlrow olleH">v -z:&*=
, hKlZi!4J
^_@ #g5^SR|qE
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Zw]
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Brainfuck dp5f7>]:(
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
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+++++++++++++++.>.+++.------.--------.>+.>. _}mK!_`
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C L fl-!1
#include <stdio.h> "Jy~PcJZ1
_ jAo:K_Z
int main(void) me\cLFw
{ =ZsGT
printf("Hello, world!\n"); BwJuYH7QJ$
return 0; }4nT.!5
} WA)Ij(M8 p
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C++ uu%?K@Qq
#include <iostream> cX
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\h3e-)
int main() ACV ek
{ sFb4`
std::cout << "Hello, world!" << std::endl; l[/q%Ca'>
return 0; _a+ICqR
} );
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C++/CLI MFg'YA2/
int main() nd+?O7~}(
{ S;A)C`X&
System::Console::WriteLine("Hello, world!"); 16@);Ot
} hteOh#0{
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C# (C Sharp) agaq`^[(P
class HelloWorldApp P Tnac
{ 5a(<%Q
<"
public static void Main() ]@SU4
{ z };ZxN
System.Console.WriteLine("Hello, world!"); NygI67
} jNy?[
)
} fQQ|gwVki
A/Khk2-:
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COBOL fW~*6ln
IDENTIFICATION DIVISION. %yaG,;>U
PROGRAM-ID. HELLO-WORLD. KtMbze
w3#`1T`N
ENVIRONMENT DIVISION. a{`"68
WOO%YU =
DATA DIVISION. )!C7bTv 4
\$;~74}
PROCEDURE DIVISION. aqfL0Rg+`
DISPLAY "Hello, world!". Zu=kT}aGg
STOP RUN. b%nkIPA
,QS'$n
b}%g}L D
Common Lisp Dq`~XS*
(format t "Hello world!~%") y[:q"BB3
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/p$=Cg[K
DOS批处理 bm}+}CJ@#0
@echo off M@O2
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echo "Hello, world!" _[1^s$
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QUPf*3Oy
Eiffel j m>U6
class HELLO_WORLD bp Ml =_
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creation o
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make "=ElCaP}
feature tzNaw %\
make is h^d\xn9GT#
local 7O461$4v
io:BASIC_IO `r]TA]DR
do A|C_np^z2
!!io 0h:G4
io.put_string("%N Hello, world!") B<+pg
end -- make &>V/X{>$`K
end -- class HELLO_WORLD \kk!Dz*H
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^vn\4
Erlang bpnv &EG
-module(hello). 'g]=.K+@}
-export([hello_world/0]). !^1[ s@1
zS?n>ElI
hello_world() -> io:fwrite("Hello, World!\n"). `#=fA
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0
Ym:{Mm=ud
Forth bHJoEYY^
." Hello, world!" CR Y.9~Bo<<r
\KNdZC?V2
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Fortran `11#J;[@G
WRITE(*,10) 1wbTqc
10 FORMAT('Hello, World!') g#Mv&tU
STOP WT?b Bf
END &
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UE{,.s
U81;7L8
HTML $^K]&Mft
<HTML> s1Okoxh/!V
<HEAD> Li ij{ahm
<TITLE> Hello World! </TITLE> RE*WM3QK~
</HEAD> 9='=-;@/5
<BODY> =Iy/cHK
<p>Hello World!</p> >"O1`xdG
</BODY> ZXh~79
</HTML> bSY;[{Kl
}U(\~
=D
5pB^Y MP
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H X:R%1+&*
'HJ/2-=
t18UDR{
INTERCAL ,7t3>9-M"
PLEASE DO ,1 <- #13 q%DVDq( z
DO ,1 SUB #1 <- #238 70duk:Ri0
DO ,1 SUB #2 <- #112 w[e0wh`.
DO ,1 SUB #3 <- #112 yB=C5-\F
DO ,1 SUB #4 <- #0 /z..5r^,ZZ
DO ,1 SUB #5 <- #64 8g.AT@ ,Q
DO ,1 SUB #6 <- #238 Zo'/^S
DO ,1 SUB #7 <- #26 //~POm
DO ,1 SUB #8 <- #248 Fgskb"k/
DO ,1 SUB #9 <- #168 P$6W`^DZ
DO ,1 SUB #10 <- #24 |OOXh[y
DO ,1 SUB #11 <- #16 NP$e-" 1
DO ,1 SUB #12 <- #158 O<4Q$|=&?
DO ,1 SUB #13 <- #52 N?\bBt@
PLEASE READ OUT ,1 tF<^9stM
PLEASE GIVE UP g'KzdG`O0
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HE*7\"9
Java +:fqL
public class Hello ;gEp!R8
{ W]Y@WKeT
public static void main(String[] args) #-}kG"
{ t8t}7XD
System.out.println("Hello, world!"); S@9w'upd
} fS5GICx8R
} $K+4C0wX`
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lr-12-D%-
JSP y>>vGU;
<% @>M8Pe
out.print("Hello, world!"); ;,<r|.6U
%> kw6cFz
g Cg4;b6g
7fap*
MIXAL : :F!
TERM EQU 19 the MIX console device number 1P(%9
ORIG 1000 start address K~`n}_:
START OUT MSG(TERM) output data at address MSG |P^]@om
HLT halt execution >]:N?[Y_~}
MSG ALF "MIXAL" oP+kAV#]
ALF " HELL" u(8 _[/_B
ALF "O WOR" KYnW7|*
ALF "LD " #S@UTJa
END START end of the program =$^Wkau
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<..直接输出..> z0T`5NG@
Hello, world! &?KPu?9
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<..或者..> I(z>)S'7r
`
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<. A8\U
CG
// 不带换行 R2Twm!1
? "Hello, world!" -s9 Y(>
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// 或者 UiJ^~rn
o,*folL
// 带换行 cxtLy&C
?? 'Hello, world!' E9yFREvQc
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=giM@MV
yf
`.%
OCaml 1$:{{%
let main () = 8vz_~p9%j
print_endline "Hello world!";; 9F2P(aS
1Pud,!\%q
X% Spv/8{
Pascal Jo6~r-
program Hello; -D!#W%y8
begin 3v9gb,)y\
writeln('Hello, world!'); t]
n(5!L(
end. r[.zLXgK
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J{nyo1A
Perl +zFV~]b
#!/usr/local/bin/perl u~/M
print "Hello, world!\n"; jOoIF/So
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JLy)}8I
PHP w\"n!^ms
<?php c8k6(#\
print("Hello, world!"); E3CiZ4=5
?> `-72>F ;T
:GwSs'$O
'8r8
^g[
Pike 9#Aipu\
#!/usr/local/bin/pike ()@.;R.Z
int main() !1a|5
xrn
{ %nDPM? aO
write("Hello, world!\n"); br34Eh
return 0; IyG=
7
} Uy$U8b-ov
/%ODJ1 M
Vq\..!y
PL/I lRF_ k
Test: procedure options(main); b*'=W"%\
declare My_String char(20) varying initialize('Hello, world!'); y (c|5CQ
put skip list(My_String); y~]IVl"
end Test; ?l\gh1{C
[p( #WM:
YA^wUx
Prolog c:?#zX
goal p0[,$$pM
write("hello,world!"). h9Tf@]W
gCk y(4
jM3Y|}+
Python F$6])F
#!/usr/local/bin/python #FQm/Q<0
print "Hello, world!" !\&7oAs=I
$+lz<~R
i">z8?qF
REXX rx}ujjx
say "Hello, world!" pU:C=hq4
6PzN>+t^y
(2O} B.6
Ruby zgq_0w~X
#!/usr/bin/ruby |L.~Amd
print "Hello, world!\n" !ulLGmUn
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PBAz`y2
Scheme 9aF..
(display "Hello, world!") 282+1X
(newline) RXx?/\~yd;
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