“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。 WN0c%kz=
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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》。 {%7<"
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以下是用不同语言写成的Hello World程序的几个例子: =R9*;6?N
Ada |\{Nfm=:%
with Ada.Text_Io; use Ada.Text_Io; OOLe[P3J3
procedure Hello is pG28M]\
begin JK^[{1
JI
Put_Line ("Hello, world!"); hWxT !
end Hello; 'G
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8A/>JD3^
;Q90Y&{L=$
汇编语言
TcZN%
H-a^BZ&iU
x86 CPU,DOS,TASM "^"'uO$
MODEL SMALL wP`sXPSmIu
IDEAL coAW9=o}
STACK 100H PW^ 8;[\QP
Z3`2-r_=
DATASEG hho%~^bn(
HW DB 'Hello, world!$' jZ#UUnR%
(6-y+LG
CODESEG Lh!z>IWjOG
MOV AX, @data QK7e|M
MOV DS, AX @\$Keg=>:
MOV DX, OFFSET HW ,RN|d0dE
MOV AH, 09H ; +9(;
INT 21H J!<#Nc
MOV AX, 4C00H <?4cWp|i
INT 21H -pX|U~a[
END j J-d/"(
;_p fwa4
\CwtX(6.
x86 CPU,GNU/Linux,NASM j`Nh7+qs
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ITQ9(W
Un
;Enter this into "hello.asm" then type: _/Tlqzp
;"nasm -f elf hello.asm" *#GDi'0
;"ld hello.o -o hello" xH@'H?
;"./hello" U%,;N\:_
G{O\)gf
section .data ;data section declaration MC6)=0:KX
msg db 'Hello World!',0AH ?q6Z's[
len equ $-msg ;string length xfes_v""
#~*XDWvIS~
section .text ;code section declaration T N Ist
global _start ;entry point (start of execution) |Z!@'YB
_start: mov edx,len ;string length :@;6
mov ecx,msg ;string start 9nO(xJ"e4
mov ebx,1 ;file handle: stdout zM\IKo_"
mov eax,4 ;sys_write )1K! [W}t
int 80h ;kernel system call mCK],TOA:
Mb~~A5
mov ebx,0 ;return value D2Vv\f
mov eax,1 ;sys_exit >*{:l,LH
int 80h ;kernel system call YPG,9iZ&f
<oZ(n g@X
A$N+9n\
x86 CPU,Windows,MASM32 oL)lyUVT
.386 Tfr`?:yF
.model flat,stdcall \d ui`F"Cc
option casemap:none unJiE!
;Include 文件定义 |[DV\23{G
include windows.inc 5U3qr*/ ;m
include user32.inc Jxf}b}^T
includelib user32.lib %B0w~[!4}
include kernel32.inc NQg'|Pt(%
includelib kernel32.lib K,G,di
;数据段 *^ey]),f54
.data gU u&Vy\
szCaption db 'A MessageBox!',0 =#b4c>
szText db 'Hello,world!',0 $\0TD7p
;代码段 LH,]vuXh
.code Z~:/#?/
start: p8$\uo 9YQ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK :|zp8|
invoke ExitProcess,NULL XRtyC4f
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> $vW^n4!
end start 0c`sb+?
fJvr+4i4k
%l%=Dkss
AWK cl@kRX<7'
BEGIN { print "Hello, world!" } FoQ?U=er
4v0dd p
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BASIC ?ISI[hoc
传统版BASIC(例如GWBASIC): "k/;`eAP
=!(S<];
10 PRINT "Hello, world!" W;q#ZD(;
20 END <=$rU232}
sE^ns\&QP=
或在提示符输入: =.VepX|?D
FK-}i|di
?"Hello, world!":END -hQ96S8
%uh R'8"
现代版BASIC(例如Quick BASIC): RA#\x.
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Print "Hello, world!" LQ~LB'L
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以下的语句在Quick BASIC中同样有效: &
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? "Hello,world!" Bjurmo
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<ur KIu
BCPL T_3V/)%@
GET "LIBHDR" }P05eI
Fsnw3/Nr
LET START () BE &*X3ch
$( zf M<x,XdY
WRITES ("Hello, world!*N") (K^YD K
$) Ti0
(VdY
ac2}3$u
.a
~s_E
Befunge 2q2p=H>&
"!dlrow olleH">v ju8',ZC
, &gY;`*<
^_@ THrc
H
Na~g*)uT$
6 lB{Ao?|
Brainfuck {KF 7j63
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< nL 1IS
+++++++++++++++.>.+++.------.--------.>+.>. \W3+VG2cA
34"{rMbQ
?q+8 /2
C :7HVBH
#include <stdio.h> ~Da
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'?&B5C
int main(void) !X \Sp}
{ wxdh?sQ
printf("Hello, world!\n"); ,apd3X%g
return 0; q$e
T!'x
} $K=K?BV[
e_fg s>o`(
},?-$eyX
C++ 7H8GkuO
#include <iostream> H}u)%qY+~
<) >gg!
int main() |U;w !0
{ gJWlWVeq$
std::cout << "Hello, world!" << std::endl; Mqrt-VPh
return 0; (H|%?F;{l
} avYh\xZ
(E2lv#[
}w|=c>'_}
C++/CLI 6/p]jN
int main() |q1b8A \
{ "B_5Y&pM`
System::Console::WriteLine("Hello, world!"); Zq2H9^![y~
} g7E`;&f
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~m,mvRS
C# (C Sharp) `Z;B^Y0
class HelloWorldApp ,d/CU
{ 8EW`*+%=
public static void Main() B=o#LL
{ MSxU>FX0
System.Console.WriteLine("Hello, world!"); ^^j|0qshL
} g/n"N>L
} )[^:]}%r
(_s!,QUe
JsAb q
COBOL YQfZiz}Fv
IDENTIFICATION DIVISION. LiHXWi{s
PROGRAM-ID. HELLO-WORLD. r`mzsO-'
A61-AwvF8-
ENVIRONMENT DIVISION. S%a}ip&
{<Xo,U7y
DATA DIVISION. {kY`X[fvZ
z~A(IQO
PROCEDURE DIVISION. Z;dwn~Tw
DISPLAY "Hello, world!". Ed ?Yk* 4
STOP RUN. |?pYJkrYO
<7RkM
l")o!N?
Common Lisp Ri%Of:zZ
(format t "Hello world!~%") $)i"[
Si%Eimiq
FrE/K_L
DOS批处理 i >/@]2
@echo off ":ws~Zep
echo "Hello, world!" =^".{h'-
^HU=E@
m-pIFL<^N
Eiffel I{X@<o}
class HELLO_WORLD vp9E}ga
C9^elcdv
creation )Sh;UW
make Qg8eq_m(
feature _oyL*Cb
make is y|2g"J
local !UPAEA
io:BASIC_IO aV0;WH_3
do v2dSC(hRZ
!!io H603L|4
io.put_string("%N Hello, world!") 8)Bn?6.
end -- make T J"{nB
end -- class HELLO_WORLD :[$i~V
*TMM:w|1
`:^)"#z)
Erlang lf7H8k, -
-module(hello). [+[fD
-export([hello_world/0]). 7C6BZ$(
%%-Tjw o
hello_world() -> io:fwrite("Hello, World!\n"). Ni;{\"Gt
M3xi 0/.
:d/:Ga5v!
Forth <i`K%+<WO
." Hello, world!" CR #IciNCIrG
Yv|bUZ@
q?b)zeJ
Fortran QH56tQq
WRITE(*,10) VE+p&0
10 FORMAT('Hello, World!') ohG43&g~
STOP zJym`NF
END bgx5{!A
z8MpE
m0K2 p~
HTML uc
`rt"
<HTML> @eD2<e
<HEAD> YJ;a{)e
<TITLE> Hello World! </TITLE> _a02#
</HEAD> u=?P*Y/|W
<BODY> yyYbB ]D
<p>Hello World!</p> [_z2z6
</BODY> S&g-
</HTML> <
oG\)!O
3jQ$72_
@C6DOB
HQ9+ 1F%*k &R
H @;-Un/'C;7
b+fy&rk@-
>Sl:Z ,g;
INTERCAL y#SD-#I-
PLEASE DO ,1 <- #13 O#ajoE
DO ,1 SUB #1 <- #238 0DjBqh$
DO ,1 SUB #2 <- #112 *xX0]{49q
DO ,1 SUB #3 <- #112 X([n>w
DO ,1 SUB #4 <- #0 w2_I/s6B
DO ,1 SUB #5 <- #64 >5Rw~
DO ,1 SUB #6 <- #238 nT6iS}h
DO ,1 SUB #7 <- #26 "MKsSty
DO ,1 SUB #8 <- #248 `rFGSq$9
DO ,1 SUB #9 <- #168 !haXO
DO ,1 SUB #10 <- #24 )eVDp,.^
DO ,1 SUB #11 <- #16 "g&l~N1$
DO ,1 SUB #12 <- #158 S| ?--vai_
DO ,1 SUB #13 <- #52 uaMm iR
PLEASE READ OUT ,1 vVRCM
PLEASE GIVE UP H< 3b+Sg
k{$"-3ed
Z)>a6s$ih<
Java q+=@kXs>+
public class Hello 9(\N+
{ Y
.X-8
public static void main(String[] args) M>l+[U
{ jT_Tx\k
System.out.println("Hello, world!"); yru}f;1
} @G&xq"Fg7
} 04LVa|Y@U
:'Kx?Es
mr\L q~*c
JSP m,"tdVo .
<% i]Of<eQ"
out.print("Hello, world!"); Tp.iRFFkP
%> dQoMAsxzM
H_^u_%:e
`SpS?mWA
MIXAL @Pg@ltUd
TERM EQU 19 the MIX console device number " ~hj B
ORIG 1000 start address H s 3*OhK\
START OUT MSG(TERM) output data at address MSG "!eT
HLT halt execution v[=E f
MSG ALF "MIXAL" , X+(wp
ALF " HELL" ed2&9E>9b
ALF "O WOR" x@l~*6!K
ALF "LD " |Y8o+O_`
END START end of the program +m},c-,=$w
\?IwR]@y
\Xp"I5
Nuva 8xz7S
<..直接输出..> J #5o
Hello, world! s: .XF|e{
M?CMN.Dw
<..或者..> zIm!8a
&xT~;R^
<. 0(6`dr_
// 不带换行 #.xTAvD
? "Hello, world!" $+N^ s^
S :|*wB
// 或者 U6 R4UK
*XR~fs?/*W
// 带换行 Y3&ecEE
?? 'Hello, world!' ^aMdbB
.> ~n\ea:.
-L3RzX
^@> Qiy
OCaml SZ){1Hu
let main () = N*-Z Jv
print_endline "Hello world!";; +5\\wGo<
4 (gf!U
(ytkq(
Pascal md
s\~l73
program Hello; `v
er "s;
begin 9D21e(7X
writeln('Hello, world!'); qa?y lR"kA
end. gWPa8q<b
p+?WhxG)
k"c_x*f
Perl 1MSu])
W
#!/usr/local/bin/perl &d;$k
print "Hello, world!\n"; hdb4E|'A
Sa~C#[V
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