“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。 R[qfG!
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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》。 k_o$ Ci
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以下是用不同语言写成的Hello World程序的几个例子: QWncKE,O$
Ada 4#^E$N:
with Ada.Text_Io; use Ada.Text_Io; ;4%Co)Rw
procedure Hello is e+TSjm
begin (D<_
iV
Put_Line ("Hello, world!"); TJO?BX_9
end Hello; }x A Eu,n^
)/p=ZH0[
85}S8\_u
汇编语言 }!`_Bz:
k#oe:u`<
x86 CPU,DOS,TASM |7$Q'3V
MODEL SMALL (zmLMG(R
IDEAL P9W!xvV`w
STACK 100H Q?g#?z&Pu\
"Dt:
8Nf^
DATASEG pXhN? joe
HW DB 'Hello, world!$' A!:R1tTR;S
|uIgZ|7[
CODESEG o..iT:f;n
MOV AX, @data -UBH,U
MOV DS, AX gj@>9
MOV DX, OFFSET HW !r#36kO
MOV AH, 09H GzN /0:b
INT 21H <1pRAN0
MOV AX, 4C00H SR$?pJh D%
INT 21H 1)BIh~1{p
END o'KBe%@/
W}iDT?Qi
z=j,-d%9
x86 CPU,GNU/Linux,NASM tJa*(%Z?f
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 84g8$~M
;Enter this into "hello.asm" then type: "Q.KBX v/
;"nasm -f elf hello.asm" Njmb{L]Cps
;"ld hello.o -o hello" Ywo=w:'
;"./hello" 0PdX>h.t
,GYK3+}Z
section .data ;data section declaration [KW9J}]
msg db 'Hello World!',0AH "+Kp8n6
len equ $-msg ;string length L$3{L"/
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Tz>}@W
section .text ;code section declaration .)|2^ 'W
global _start ;entry point (start of execution) w\}Q.$@
_start: mov edx,len ;string length Vwpy/5Hmp
mov ecx,msg ;string start W5(.Hub}
mov ebx,1 ;file handle: stdout (J5M+K\H
mov eax,4 ;sys_write tpn.\z%
int 80h ;kernel system call 9zNMv-
N+zR7`AG8
mov ebx,0 ;return value {wptOZ
mov eax,1 ;sys_exit r<1.'F
int 80h ;kernel system call i{7Vh0n3S-
+EvY-mwfQ
THcX.%ToT
x86 CPU,Windows,MASM32 Z^t{m!v
.386 @ [<B:Tqo
.model flat,stdcall 2&0#'Tb
option casemap:none h/NI5
;Include 文件定义 b" kL)DL1L
include windows.inc -uhg7N[3
include user32.inc LrhQG
includelib user32.lib V?r(; x
include kernel32.inc ?#|in}
includelib kernel32.lib 4p&YhV7j)o
;数据段 M!O &\2Q
.data a/gr1
szCaption db 'A MessageBox!',0 UJ^-T+fut
szText db 'Hello,world!',0 1v'|%B;O
;代码段 cdv0:+[P
.code dG%{&W9
start: zC WN,K`
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ADT8A."R[
invoke ExitProcess,NULL HEs .pET\
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> "64D.c(r$
end start i,mo0CSa
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8M6Qn7{L
AWK qR^i5JH}u
BEGIN { print "Hello, world!" } %!V =noo
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wQrD(Dv(yA
BASIC AxiCpAS;J
传统版BASIC(例如GWBASIC): +5ue)`
;s w3MRJ
10 PRINT "Hello, world!" 1zIrU6H2;_
20 END }EJ'tio]
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或在提示符输入: `YK%I8
)"&\S6*!
?"Hello, world!":END 2VgVn,c
rB-}<22.
现代版BASIC(例如Quick BASIC): nm
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Print "Hello, world!" l1D"*J 2`
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以下的语句在Quick BASIC中同样有效: .ot[_*A.FD
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? "Hello,world!" o;J_"'kP
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ul ag$ge
BCPL B{-+1f4
GET "LIBHDR" S0mF%"
x#TWZ;
LET START () BE d;LBV<Z?
$( 82~ZPZG
WRITES ("Hello, world!*N") .>|]Lo(=l
$) nY=]KU
6l?\iE
Tp
fC
Befunge ^]1M8R,
"!dlrow olleH">v te8lF{R
, GeCyq%dN
^_@ 2F fwct:
* 57y.](w
Vv5#{+eT;
Brainfuck 3&vUR(10
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 4@ =l'Fw
+++++++++++++++.>.+++.------.--------.>+.>. {;Ispx0m
*q+z5G;O
bF{14F$
C zMmVYx
#include <stdio.h> -~
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d&[.=M\E8
int main(void) H:&|q+K=#
{ RB `<Zw
printf("Hello, world!\n"); )a'c_ 2[
return 0; $l!+SLK
} Ah<6m5+
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C++ ,c_NXC^X?
#include <iostream> om'DaG`A
cWG?`6xU&
int main() )./'`Mx?
{ M,nLPHgK
std::cout << "Hello, world!" << std::endl; KZ}F1Mr
return 0; K,\Bj/V(
} _LUTIqlvi
0/Wo":R:
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C++/CLI .|g67PH=
int main() y
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{ rM?ox
System::Console::WriteLine("Hello, world!"); q[w.[]
} {_i.IPp~
h#iFp9N
,awp)@VG7
C# (C Sharp) >9v?p=
class HelloWorldApp /K./k!'z
{ (Mw<E<f
public static void Main() fm%1vM$[J
{ :jp4 !0w
System.Console.WriteLine("Hello, world!"); d=B
DR^/wA
} 8 O5@FU
3
} uBe1{Z
Eu AJ.n
'M*+HY\.0
COBOL J! @$lyH
IDENTIFICATION DIVISION. J!QzF)$4J
PROGRAM-ID. HELLO-WORLD. \@kY2,I V
[1Dg_>lz
ENVIRONMENT DIVISION. c0Tda
/#PEEN
DATA DIVISION. &\\iD :J
7^bO`
PROCEDURE DIVISION. S?}@2[
DISPLAY "Hello, world!". z/7H/~d
STOP RUN. $V"~\h8
i6[,m*q~2x
K/ q:aMq
Common Lisp ;a+>><x]
(format t "Hello world!~%") <dTo-P
^Slwg|t*~P
j.GpJDq
DOS批处理 ~>@Dn40
@echo off n8zh;vuJ
echo "Hello, world!" u OEFb
ku*|?uF
{Ex0mw)T
Eiffel a$I;
L
class HELLO_WORLD g]C+uj^
5Mb1==/R
creation %D z|p]49!
make S:] w@$
feature [IxZweK
make is O'deQq[
local S8" h9|
io:BASIC_IO 5|:=#Ql*
do Dyp'a
!!io ]?U:8%
io.put_string("%N Hello, world!") xH\'gli/
end -- make `3r *Ae
end -- class HELLO_WORLD LX
j Tqp'
B$Jn|J"/6
}rVnuRq
Erlang +v&+8S`+
-module(hello). SDV} bN
-export([hello_world/0]). Arz>
P@EQ
3Nw9o6` U
hello_world() -> io:fwrite("Hello, World!\n"). A]BD2
W.o
W=<
Zx5vIm
Forth }mz4 3Sq<
." Hello, world!" CR XLFJ?$)Tro
2`t4@T
+(r8SnRX
Fortran dW!T.S
WRITE(*,10) y{K~g<VL
10 FORMAT('Hello, World!') LtH;#Q
STOP yS7[=S
END n7X3aoVV
H@__%KBw
Cb.~Dv
!
HTML K*;=^PY
<HTML> ngEjbCV+
<HEAD> )1J&tV*U
<TITLE> Hello World! </TITLE> kYxn5+~
</HEAD> V'^s5
<BODY> (sO;etW
<p>Hello World!</p> <JYV
G9s}
</BODY> q(!191@C(
</HTML> u;~/B[
<8r%_ ']
T\8|Q@
HQ9+ nd_d tsp#
H InNuK0@
im%'S6_X4
$C(}
INTERCAL "+&|$*
PLEASE DO ,1 <- #13 Gnj|y?'
DO ,1 SUB #1 <- #238 -`iZBC50
DO ,1 SUB #2 <- #112 vlm&)DIt
DO ,1 SUB #3 <- #112 TS$ 2K
DO ,1 SUB #4 <- #0 ~;il{ym
DO ,1 SUB #5 <- #64 5"^$3&)
DO ,1 SUB #6 <- #238 ?8b?{`@V
DO ,1 SUB #7 <- #26 }LDDm/$^}
DO ,1 SUB #8 <- #248 \ tF><
DO ,1 SUB #9 <- #168 J03yFT,dF
DO ,1 SUB #10 <- #24 bb+-R_3Kd
DO ,1 SUB #11 <- #16 [=7|LHjU
DO ,1 SUB #12 <- #158 <.s[x~b\`
DO ,1 SUB #13 <- #52 ^0ipM/Lg
PLEASE READ OUT ,1 5Ee%!Pk
PLEASE GIVE UP !m'lOz
@lDoMm,m'
wC`])z}bT
Java a%7%NN*i
public class Hello _rY,=h{+
{ \;.\g6zX
public static void main(String[] args) xQ^zX7
{ P<
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System.out.println("Hello, world!"); z6ArSLlZ
} LylB3BM
} V[5-A $ft
"qIO,\3T
[- a2<E
JSP bQrH8)
<% TmoODG>@
out.print("Hello, world!"); 7^ITedW@
%> liA)|.H
0.~QA+BD:S
506B=
MIXAL gieTkZ
TERM EQU 19 the MIX console device number .]k+hc`
ORIG 1000 start address .MXznz
START OUT MSG(TERM) output data at address MSG V&eti2&zO
HLT halt execution B=jJ+R
MSG ALF "MIXAL" .Xc, Gq{
ALF " HELL" 6p1\#6#@
ALF "O WOR" i"_)91RA
ALF "LD " \&NpVH,-
END START end of the program SWNi@
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"
2Dz5L1v
Nuva 5IOOV Yl
<..直接输出..> ug.mY= n'
Hello, world! +\fr3@Yc
\3-XXq
<..或者..> ra0:Lg'
&BY%<h0c
<. }/nbv;)
// 不带换行 AE={P*g
? "Hello, world!" c*-8h{}
-icOg6%
// 或者 J}c57$Z
5bYU(]
// 带换行 GbFLu`I u
?? 'Hello, world!' z\Rs?v"
.> AjKP -[
J*o :RnB
g{.>nE^Sc5
OCaml +dX1`%RR[
let main () = vIF=kKl9,
print_endline "Hello world!";; m4bfW
X^r5su?
iS&~oj_-%
Pascal EgOAEv
program Hello; *Z>Yv37P
begin bZHuEh2w
writeln('Hello, world!'); Z.am^Q^Y!
end. nd3=\.(P
T]Gxf"mK
l=8)_z;~D
Perl %C\Q{_ AS
#!/usr/local/bin/perl @kvgq 0ab
print "Hello, world!\n"; 4:q<<vCJv
a/;u:"
IT!
a)d
PHP IMIZ#/
<?php S(9Xbw)T
print("Hello, world!"); Rp
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?> _IuEa\>
U_v{Vs
E1IRb':
Pike 4!p~Mr[E
#!/usr/local/bin/pike @[#U_T- I
int main() .j:.?v
{ /ZqBO*]
write("Hello, world!\n"); ,mEFp_a+
return 0; ^"7tfo8
} %lNv?sWb
`2c>M\c4U
cN0|! nm*
PL/I ["- pylhK
Test: procedure options(main); [SgWUP*
declare My_String char(20) varying initialize('Hello, world!'); A"x1MjuqLM
put skip list(My_String); OSk:njyC[
end Test; Qmle0ae
^29w@*
O( G|fs
Prolog L@2%a'
goal sUN>uroi !
write("hello,world!"). 6kuN)
n)uvN
0-p LCf
Python ^ j;HYs_
#!/usr/local/bin/python IG0$OtG
print "Hello, world!" WJ=DTON
?#!Hm`\.
hO(8v&ns3
REXX ot]eaad
say "Hello, world!" Tl5K'3
ljVtFm<
((^jyQ
Ruby 4[a?..X
#!/usr/bin/ruby jIJVl \i]
print "Hello, world!\n" 0l3v>ty
9)0AwLlv
VvN52
qeL
Scheme Epj
(display "Hello, world!") (oX|lPD<b
(newline) KY
H*5
A`<#}~A
*F* c
sed (需要至少一行输入) 95Bw;U3E
sed -ne '1s/.*/Hello, world!/p' qKt8sxg
3xef>Xv=
Q:eIq<erY
Smalltalk geU-T\1[l
Transcript show: 'Hello, world!' Af1izS3
=BQM(mal
O%5cMz?eU
SNOBOL #\N?ka}!
OUTPUT = "Hello, world!" t^ LXGQ
END EJ{Z0R{{
4"1OtBU3
# m?GBr%k
SQL UfjLNe}wA
create table MESSAGE (TEXT char(15)); L;/#D>U(
insert into MESSAGE (TEXT) values ('Hello, world!'); tk"L2t
select TEXT from MESSAGE; 2Fi>nJ
drop table MESSAGE; *zeY<6
rt$zM
##d\|r
Tcl "
]
0ER
#!/usr/local/bin/tcl Je_Hj9#M\d
puts "Hello, world!" v'i"Q
=o;QvOS;
*}R5=r0
TScript 3GqJs
? "Hello, world!" HX\@Qws
{:m5<6?x)
BF8n: }9U
Turing .O @bX)
put "Hello, world!" W=M&U
Gir_.yc/
zk5sAHQ
UNIX-style shell q)gZo[]~
程序中的/bin/sh可改为您使用的shell ^% BD
H^xrFXg~z
#!/bin/sh o O%!P<