“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。 G!$~'o%/
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 sPZwA0%
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以下是用不同语言写成的Hello World程序的几个例子: Hj
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Ada =QVkY7
with Ada.Text_Io; use Ada.Text_Io; 6 :|;O
procedure Hello is 'k\j[fk/K
begin ?&wrz
Put_Line ("Hello, world!"); R&(OWF;~,
end Hello; WcqR; Nm
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汇编语言 &Iy5@8
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x86 CPU,DOS,TASM s9sl*1n1m`
MODEL SMALL ^OQP;5 #K
IDEAL 2LUsqL\m}.
STACK 100H %]I#]jR
&zy%_U2%
DATASEG AVDhgJv
HW DB 'Hello, world!$' J'
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CODESEG K'
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MOV AX, @data QnOgF 3t
MOV DS, AX k"cMAu.
MOV DX, OFFSET HW I[|Y
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MOV AH, 09H QD!NV*
INT 21H 9dA+#;?
MOV AX, 4C00H <rgK}&q
INT 21H 8d5#vm
END d)-ZL*o
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x86 CPU,GNU/Linux,NASM rd0Fd+t/
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). vVo'f|fW
;Enter this into "hello.asm" then type: 3?V'O6
;"nasm -f elf hello.asm" ^AU-hVj
;"ld hello.o -o hello" trrNu
;"./hello" b>p_w%d[[J
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section .data ;data section declaration
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msg db 'Hello World!',0AH THQ #zQ-
len equ $-msg ;string length DDR4h"Y
u~uz=Yse
section .text ;code section declaration L @T/4e./
global _start ;entry point (start of execution) A@<
! '
_start: mov edx,len ;string length HcIJ&".~
mov ecx,msg ;string start A)9]^@,
mov ebx,1 ;file handle: stdout 3Ed
mov eax,4 ;sys_write eGQ4aQhi
int 80h ;kernel system call q-Z<.GTq
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mov ebx,0 ;return value Vc9Bg2f5
mov eax,1 ;sys_exit 1(Vv-bq$
int 80h ;kernel system call I= :yfW
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x86 CPU,Windows,MASM32 j;}-x1R
.386 s:6K'*
.model flat,stdcall d)uuA;n
option casemap:none ZVH 9je
;Include 文件定义 wwdmz;0S
include windows.inc ."dT6u E
include user32.inc 9J7yR}2-F
includelib user32.lib 5(CInl
include kernel32.inc YG0/e#5
includelib kernel32.lib BEb?jRMjLg
;数据段 Xxh^4vKjX
.data 2H$](k?
szCaption db 'A MessageBox!',0 =Ks&m4
szText db 'Hello,world!',0 UNb7WN
;代码段 Ue Ci{W
.code JzN "o'
start: zu?112-v2
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK -x6_HibbD
invoke ExitProcess,NULL [x7Rq_^
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> gnN>Rl
5_
end start !U@ETo
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AWK [\Wl~
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BEGIN { print "Hello, world!" } I_f%%N%
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BASIC fsOlg9
传统版BASIC(例如GWBASIC): l,Q`;v5|
31^/9lb
10 PRINT "Hello, world!"
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20 END aoW2 c1`?Z
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或在提示符输入: STu(I\9
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?"Hello, world!":END 1d49&-N
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现代版BASIC(例如Quick BASIC): zZ-/S~l
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Print "Hello, world!" )( 3)^/Xz
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以下的语句在Quick BASIC中同样有效: 2d|^$$#`
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? "Hello,world!" Oi|cTZ@A-
Y_]y :H
W<&/5s
BCPL 5KB Z-,
GET "LIBHDR" nWCJY:q;5
n+=7u[AZi
LET START () BE ).,twf58
$( Nz{qu}dt
WRITES ("Hello, world!*N") &0T7Uv-`
$) )M7yj O!
Jityb}Z"
OF1^_s;
Befunge BIMX2.S1o
"!dlrow olleH">v dAG@'A\f
, BPW.&2?<
^_@ V+sZ;$
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2va[= >_
Brainfuck p?Ux1S
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< qYe`</
+++++++++++++++.>.+++.------.--------.>+.>. .DwiIr'
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C )$Ib6tYY
#include <stdio.h> ![{/V,V]~
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int main(void) h] )&mFiE"
{ R+0fs$su
printf("Hello, world!\n"); h;E.y
return 0; 76[qFz
} o}waJN`yI
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-|#/KKF
C++ JK{2hr_a
#include <iostream> ,e OZv=:
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int main() cJm},
{ (`Y;U(n
std::cout << "Hello, world!" << std::endl; .I{u[
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return 0; hb1h.F
} [Ti' X#
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(F;*@Z*R
C++/CLI Z{ YuX
int main() K7x;/O
{ wk'(g_DP
System::Console::WriteLine("Hello, world!"); D)L~vA/8b
} 1A;,"8kBd
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C# (C Sharp) HIj:?y
class HelloWorldApp 'YN:cr,V
{ #Sy~t{4
public static void Main() i%f
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{ ,,EG"Um6
System.Console.WriteLine("Hello, world!"); U;ujN 8
} !f!YMpN
} !:vQg+S
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COBOL k_^
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IDENTIFICATION DIVISION. p8s%bPjK
PROGRAM-ID. HELLO-WORLD. }7%ol&<@
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ENVIRONMENT DIVISION. pR*3Q@Ng
Bd>ATc+580
DATA DIVISION. RM%Z"pc Y6
tg%<@U`7=
PROCEDURE DIVISION. |Cfo(]>G
DISPLAY "Hello, world!". |j8#n`'
STOP RUN. uRuu!{$
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TFbF^Kd#:d
Common Lisp C ]zgVbu
(format t "Hello world!~%") uuUjIZCtz
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DOS批处理 ~d3BVKP5
@echo off #N=_-
echo "Hello, world!" 2gvS`+<TP
4Im}!q5;:<
)OlYz!#?
Eiffel H?ue!5R#L
class HELLO_WORLD (a,`Y.
Xn!=/<TIVz
creation zZ<~yi3A9
make *D7oHwDU
feature D*HK[_5
make is z;0]T=g
local [ifQLsHA
io:BASIC_IO 4g.S!-H@R
do S[rfcL"
!!io LXe'{W+bk
io.put_string("%N Hello, world!") zb9vUxN [
end -- make <dk9n}y<,
end -- class HELLO_WORLD !C.{nOfyv
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ryd}-_LL
Erlang `AdHyE
-module(hello). ybB<AkYc
-export([hello_world/0]). d?CU+=A&|
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hello_world() -> io:fwrite("Hello, World!\n"). \\"CgH-
V/"41
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Forth 5kv]k?
." Hello, world!" CR q 7+ |U%!9
6~k qU4lL
P_@ty~u
Fortran /#xYy^`
WRITE(*,10) lFgE{;z@
10 FORMAT('Hello, World!') %#]/]B/4
STOP ?H!X
p
END t6+>Zr
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HTML NL ceBok
<HTML> 0g@*N4
<HEAD> ht5:kt`F
<TITLE> Hello World! </TITLE> 7nPm{=BG
</HEAD> Y7yzM1?t
<BODY> @qsOWx`l$
<p>Hello World!</p> ^A;ec
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</BODY> AWmJm)
</HTML> qSVg.<+
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HQ9+ K*MI8')
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yD ur9Qd6
lzZ=!dG
INTERCAL ZOzyf/?.
PLEASE DO ,1 <- #13 O{G $]FtF
DO ,1 SUB #1 <- #238 k1WyV_3
DO ,1 SUB #2 <- #112 L\kT9wWK|
DO ,1 SUB #3 <- #112 w?p8)Q6m
DO ,1 SUB #4 <- #0 OoAZ t
DO ,1 SUB #5 <- #64 CwfGp[|}e
DO ,1 SUB #6 <- #238 xm<sH!,j
DO ,1 SUB #7 <- #26 uFi[50
DO ,1 SUB #8 <- #248 y\[GS2nTX
DO ,1 SUB #9 <- #168 a% 82I::t
DO ,1 SUB #10 <- #24 p WKpc
DO ,1 SUB #11 <- #16 &[}5yos
r
DO ,1 SUB #12 <- #158 %u$dN9cw
DO ,1 SUB #13 <- #52 nHF
PLEASE READ OUT ,1 i0&]Ig|;
PLEASE GIVE UP [6Nzz]yy
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;
>>/}Jw\
Java L2y{\<JC"
public class Hello |.U-
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{ QnDLSMx)
public static void main(String[] args) fm,:8%
{ V=H}Ecd
System.out.println("Hello, world!"); `_+m3vHG
} O Bp/:]
} %O&C\{J
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PYYO-Twg
JSP _:;j)J0
<% -
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out.print("Hello, world!"); 1HNX6
%> z0&I>PG^
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2$%0~Z5
MIXAL \~q cYp
TERM EQU 19 the MIX console device number _b 8XF&O
ORIG 1000 start address Z$a4@W9o
START OUT MSG(TERM) output data at address MSG z15QFVm
HLT halt execution O0<GFL$)&
MSG ALF "MIXAL" ZZl4|
ALF " HELL" EC|b7
ALF "O WOR" Z})n%l8J]p
ALF "LD " \ \~4$Ai[
END START end of the program 6MRS0{
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<..直接输出..> UwxrYouv~@
Hello, world! _`Sz}Yk
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<..或者..> -x1O|q69
pV))g
e\
<. 4.mbW
// 不带换行 C(*)7|
m
? "Hello, world!" A,s .<TG
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// 或者 }tT*Ch?u
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// 带换行 { e%
?? 'Hello, world!' l+V5dZ8W
.> "ae55ft//
Jid :$T>
5{|\h}
OCaml $pGk%8l%
let main () = wen6"
print_endline "Hello world!";; {*CLWs4
p^``hP:J
goT:\2
Pascal JZ=a 3)x"
program Hello; FR@ dBcJUU
begin y0'"
writeln('Hello, world!'); w8g36v*+(u
end.
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^i^S1h"
Perl 2={ g'k(
#!/usr/local/bin/perl d|sI>6jD
print "Hello, world!\n"; fJC,ubP[5
3,B[%!3d
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PHP #B)`dA0a
<?php tgYIM`f
print("Hello, world!"); u$[T8UqF
?> ~1h-LbFI2
=kLg)a |
SwuadN
Pike ;"nEEe]?
#!/usr/local/bin/pike 6%_d m'
int main() 0\U28zbMJw
{ M$gy J!Pb
write("Hello, world!\n"); f i!wrvO
return 0; n{Mj<\kL
} (Qq$ql27
Q\:'gx8`
{w^flizY
PL/I V*'9yk"
Test: procedure options(main); 4"j5@bppJ
declare My_String char(20) varying initialize('Hello, world!'); 8`qw1dF
put skip list(My_String); %GS)9{T&
end Test; UrxgKTry
&/, BFx"
3)g1e=\i$
Prolog O'-lBf+<
goal I/)dXk~
write("hello,world!"). /HDX[R
{+t'XkA
~ab"q%
Python ZcO!cR&*'J
#!/usr/local/bin/python "=f*Lk@[
print "Hello, world!" D\V}Eo';6
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.+B)@?
REXX g%=\Wiit]
say "Hello, world!" j4}aK2[<
t7A.b~#
I"JT3[*s
Ruby ESASsRzk
#!/usr/bin/ruby w-CuO4P
print "Hello, world!\n" ,_lwT}*w
@3S2Xb{ra1
"ej>1{3Y:=
Scheme uR)@v^$FE
(display "Hello, world!") l1wxs@](
(newline) Il;'s
Z gU;=.
s/To|9D
sed (需要至少一行输入) FJL9x,%6
sed -ne '1s/.*/Hello, world!/p' sfrh+o57
6y5arP*6e
Y9w=[[1
Smalltalk m&A/IW,.
Transcript show: 'Hello, world!' {Ue6DK%
esu6iU@
kb7\qH!n
SNOBOL KuI>:i;
OUTPUT = "Hello, world!" yMSRUQ
x
END _mkI;<d]$T
3P\I;xM
b]g.>$[nX
SQL O:BP35z_F
create table MESSAGE (TEXT char(15)); [7s5Vt|
insert into MESSAGE (TEXT) values ('Hello, world!'); ;Ok11wOw
select TEXT from MESSAGE; ?<LG(WY
drop table MESSAGE; n'h
)(^
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