“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。 fI[tU(x
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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》。 _Hi;Y
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以下是用不同语言写成的Hello World程序的几个例子: N( E\
Ada ;RZ@t6^
with Ada.Text_Io; use Ada.Text_Io; W3*BdpTw
procedure Hello is @B5@3zYs
begin Yo;/7gG>
Put_Line ("Hello, world!"); OQaM4 7"
end Hello; c#nFm&}dm
.:Bjs*
wl2rw93
汇编语言 /A\'_a|
/S1EQ%_
x86 CPU,DOS,TASM r<V]MwO=
MODEL SMALL p%,:U8fOR
IDEAL ElhTB
STACK 100H o%X_V!B{V
`x$d8(1J`#
DATASEG `48jL3|
HW DB 'Hello, world!$' X!&DKE
M_+&XLnzsJ
CODESEG aq~hl7MTj
MOV AX, @data W?~G_4
MOV DS, AX hXM8`iFW5
MOV DX, OFFSET HW -h^FSW($-R
MOV AH, 09H AuUT 'E@E
INT 21H w_pEup\`
MOV AX, 4C00H 4>>{}c!nf
INT 21H ~1wAk0G`n
END xB3;%Lc
>8Zz<S&z
67%eAS
x86 CPU,GNU/Linux,NASM }$#e&&)n
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +mhYr]Z
;Enter this into "hello.asm" then type: =$Sf]L
;"nasm -f elf hello.asm" {,.1KtrSN
;"ld hello.o -o hello" ,)'!E^n
;"./hello" pSkP8'
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N72z5[..
section .data ;data section declaration 85$MHod}[,
msg db 'Hello World!',0AH t&:'Ag.G
len equ $-msg ;string length #9}KC 9f
ma@ws,H
section .text ;code section declaration 4Ub_;EI>
global _start ;entry point (start of execution) *$/7;CLq
_start: mov edx,len ;string length m'Z233Nt"
mov ecx,msg ;string start j]rE0Og
mov ebx,1 ;file handle: stdout >4}+\ Q`S
mov eax,4 ;sys_write
Bka\0+
int 80h ;kernel system call 2/=CrK
)`F?{Sg
mov ebx,0 ;return value #Bj{
4OeV
mov eax,1 ;sys_exit N~l(ng9'U
int 80h ;kernel system call Smo^/K`f9
[%;LZZgl
O^G/(
x86 CPU,Windows,MASM32 l*uNi47|
.386 mA(K`"Bfh
.model flat,stdcall tf|/_Y2
option casemap:none #!rng]p
;Include 文件定义 vmAMlgZ8{<
include windows.inc ()JM161
include user32.inc DF%\1C>
includelib user32.lib X/lLM`
include kernel32.inc 6AqHzeh
includelib kernel32.lib 4LtFv)i
;数据段 K6@QZc5.!
.data =#^%; 6 6z
szCaption db 'A MessageBox!',0 D^=_408\
szText db 'Hello,world!',0 L{bcmo\U
;代码段 Nz#T)MGO`
.code +
htTrHjt
start: c 6}d{B[
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK G5ebb6[+
invoke ExitProcess,NULL ~Lhq7;=H?O
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ~l}rYi>g%
end start dl'pl
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aM
d,iW#,
AWK 2al%J%
BEGIN { print "Hello, world!" } !Y!Cv %
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BASIC 8/U=~*`_
传统版BASIC(例如GWBASIC): 'I($IM
vvv~n]S6
10 PRINT "Hello, world!" uaNJTob
20 END %'"#X?jk1
+ Q
If7=
或在提示符输入: LH"MJWOJ
l?NRQTG
?"Hello, world!":END *I`Sc|A
/S$p_7N
现代版BASIC(例如Quick BASIC): <(6@l@J|6
699z@>$}
Print "Hello, world!" Z8(1QU,~2
= PcmJG]
以下的语句在Quick BASIC中同样有效: .UakO,"z
rhMsZ={M
? "Hello,world!" IQMk :
kCL)F\v"iT
T_\HU*\
BCPL N)lzX X
GET "LIBHDR" $@FD01h.t3
m/|>4~
LET START () BE (Z=ziopDE
$( M]!R}<]{
WRITES ("Hello, world!*N") |]RV[S3v
$) /gL(40
49bzHEqZ
!(*mcYA*W
Befunge gq*- v:P>
"!dlrow olleH">v zPe4WE|
, R/waWz\D
^_@ %'kaNpBz
^5qX+!3r{
z) yUBcq
Brainfuck 8js5/G+
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 2"~!Pu^.j
+++++++++++++++.>.+++.------.--------.>+.>. <P3r+ 1|R
HLg/=VF7?
1Z'cL~9
C `FHHh
#include <stdio.h> FviLlly6
-TU7GCb=
int main(void) }IC$Du#
{ r[vMiVb
printf("Hello, world!\n"); X, <l
return 0; W=j/2c/
} wp-5B= #:{
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S5@/;T
C++ 9qIUBH e
#include <iostream>
$Tfq9
ZwAX+0
int main() },2-\-1
{ hqnJ@N$yY
std::cout << "Hello, world!" << std::endl; =$}P'[V
return 0; b=9(gZ 9
} |VB}Kv
}9R45h}{<
D%LqLLD
C++/CLI 6dV@.(][a
int main() xrA(#\}f$
{ KZ6}),p
System::Console::WriteLine("Hello, world!"); j1N1c~2
} *qAF#
};+ '
g(33h2"
C# (C Sharp) ^TyusfOz
class HelloWorldApp `.
/[/z-g
{ %/,PY>:|
public static void Main() I--WS[
{ `4.Wdi-Si
System.Console.WriteLine("Hello, world!"); r62x*?/
} ;Z-Cn.
} z:^Kr"=n
lN,b@;
>a%NC'~rc
COBOL N:)`+}
IDENTIFICATION DIVISION. ]}<.Y[!S
PROGRAM-ID. HELLO-WORLD. ~q?IG5s*Z
0Tp?ED_
ENVIRONMENT DIVISION. Bg-C:Ok2'
=w?-R\
DATA DIVISION. qRJg/~_h{
"z69jxXo
PROCEDURE DIVISION. M/5/Tp
DISPLAY "Hello, world!". owCQ71Q
STOP RUN. {DI_i +2
f?dNTfQ3mi
":"QsS#*"#
Common Lisp 'AF2:T\
(format t "Hello world!~%") #~Lh#@h
MfJk`-%~
Xf:CGR8_
DOS批处理 mbsdiab#N
@echo off Gs7mO
echo "Hello, world!" Mw?nIIu(@
C0jmjZ%w@
-fj;9('YJ
Eiffel CJJ 1aM
class HELLO_WORLD =9\=5_V
uw
L T$
creation a)(j68c
make +N5G4t#.
feature
UQ$dO2^
make is @I]uK[qd
local ]"dZE2!
io:BASIC_IO j23OgbI
do b*nytF
!!io ;J2U5Y NO
io.put_string("%N Hello, world!") Gnl6>/L,
end -- make J@"Pv~R
end -- class HELLO_WORLD }kT;UdIu;
%{yr#F=t#]
rzDqfecOmW
Erlang teUCK(;23
-module(hello). H+F?)VX}oA
-export([hello_world/0]). UX41/# 4
.Y&_k
hello_world() -> io:fwrite("Hello, World!\n"). 394u']M
A~ '2ki5$g
`kwyF27v]
Forth B+jT|Y'
." Hello, world!" CR ynw^nmM
E,xCfS)
nOkX:5
Fortran zr&K0a{hc
WRITE(*,10) ]b'K
BAMy
10 FORMAT('Hello, World!') iEr|?,
STOP ;G0~f9
END 5BS-q"
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Y3-Tg~/~W
HTML .#zx[Io
<HTML> mZ/?uPIa
<HEAD> v%/8pmZw;
<TITLE> Hello World! </TITLE> 6"|PJ_@P
</HEAD> Q&MZ/Nnf
<BODY> 6aM`qz)
<p>Hello World!</p> lDe9EJR
</BODY> 2N5N^S
</HTML> Cs^o- g!L
HNY{%D
'$
s:cS`=
HQ9+ (dpBGt@
H L0UAS'hf
-njxc{b
\Wt&z,
INTERCAL ,<R/x[
PLEASE DO ,1 <- #13 IqfR`iAix
DO ,1 SUB #1 <- #238 cOOPNa>5_
DO ,1 SUB #2 <- #112 b= F"
DO ,1 SUB #3 <- #112 A!Ng@r
DO ,1 SUB #4 <- #0 vD:.1,72
DO ,1 SUB #5 <- #64 >6:slNM#
DO ,1 SUB #6 <- #238 bLCr h(<
DO ,1 SUB #7 <- #26 &VR<'^>
DO ,1 SUB #8 <- #248
*X*D,
VY
DO ,1 SUB #9 <- #168 +P~zn=
DO ,1 SUB #10 <- #24 To}L%)
DO ,1 SUB #11 <- #16 klT6?'S
DO ,1 SUB #12 <- #158 PgB=<#9
DO ,1 SUB #13 <- #52 5G(y
PLEASE READ OUT ,1 2EG"xA5%
PLEASE GIVE UP bkmX@+Pe
@`%.\_
ksu:RJ-
Java /iy2j8:z
public class Hello 4yQ4lU,r
{ W;~^3Hz6
public static void main(String[] args) GY@Np^>[a
{ 9rn! U2
System.out.println("Hello, world!"); @F=ZGmq
} _=UXNr8S
} E IEwrC
@faf
6@H&S
JSP L
nw+o}
<% DSd 5?
out.print("Hello, world!"); e Yyl=YW
%> -|J?-
:eHh }
xqP0Z),Ow
MIXAL BAzc'x&<
TERM EQU 19 the MIX console device number Gg5vf]VFo
ORIG 1000 start address "
8;D^
START OUT MSG(TERM) output data at address MSG /Klwh1E
HLT halt execution js;IUSj.
MSG ALF "MIXAL" LFen!FnM
ALF " HELL" 8'^eH1d'
ALF "O WOR" ~+l%}4RZ
ALF "LD " oWs&W
END START end of the program vFl|
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q?}G?n4
Nuva SkvKzV.R;
<..直接输出..> (>WV)
Hello, world! *eUL1m8Y
rp=?4^(u
<..或者..> pNVao{::5
G <Lm}
<. xs.[]>nQN
// 不带换行 kwWO1=ikz@
? "Hello, world!" iW*0V3
9
*]Z
// 或者 @3VL
_g:
H{yPi7 P
// 带换行 hzKfYJcQ|
?? 'Hello, world!' b<=K@I.=
.> n[ba
v^,A~oe`t
7-^df0
OCaml <408lm
let main () = J3$`bK6F6
print_endline "Hello world!";; HK2`.'D
y)s/\l&
Ig N,]y
Pascal em>CSBx
program Hello; Yd/qcC(&
begin fF-V=Zf5
writeln('Hello, world!'); :^l*_v{
end. ;`F0
%0d
)}?dYk
azE>uEsE
Perl &<tji8Dj
#!/usr/local/bin/perl uVp R^
print "Hello, world!\n"; K
=7(=Y{
1$xt=*.u|
D+ jk0*bJ
PHP {qOSs,+=L
<?php G1|
Tu"
print("Hello, world!"); 1$Eiv8xd
?> l#Qf8*0
}$$b6G
c-M&cU+=L
Pike U(J?Q
#!/usr/local/bin/pike y{v*iH<
int main() =#y&xWxL