“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。 bkmW[w:M
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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》。 o`^GUY}
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以下是用不同语言写成的Hello World程序的几个例子: (s?`*i:2
Ada EZvB#cuL-
with Ada.Text_Io; use Ada.Text_Io; X]'Hz@$N
procedure Hello is <pd6,l\
begin 2u9^ )6/
Put_Line ("Hello, world!"); GH%'YY3|
end Hello; (W~jr-O^
W#cr9"'Ta
`Pj7O/!)#!
汇编语言 p%304oP6
zGz^T
x86 CPU,DOS,TASM :SxOQ(n
MODEL SMALL a/@<KnT
IDEAL Sz0M8fYT]
STACK 100H [BS3y`c
y^; =+Z
DATASEG uA;3R\6?
HW DB 'Hello, world!$' wK8/`{B9
/>fP )56*
CODESEG 'BT}'qN
MOV AX, @data T-7'#uB.m
MOV DS, AX 3Rid1;L0U
MOV DX, OFFSET HW OHnHSb'?\
MOV AH, 09H $cO"1mu
INT 21H aubmA0w
MOV AX, 4C00H <}pwFl8C)
INT 21H %
'>S9Ja3
END !O$ */7
a!"81*&4#
)c@I|L
x86 CPU,GNU/Linux,NASM $[VeZ-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). DM6oMT
;Enter this into "hello.asm" then type: o/I <)sa
;"nasm -f elf hello.asm" fShf4G_w\
;"ld hello.o -o hello" ')#E,Y%Hq
;"./hello" dfB#+wh
T:0X-U
section .data ;data section declaration 2G"mm(
msg db 'Hello World!',0AH gnbs^K w
len equ $-msg ;string length .vRLK
&J|3uY,'j
section .text ;code section declaration 3j.Ft*SV
global _start ;entry point (start of execution) %hU8ycI*h
_start: mov edx,len ;string length S~vbISl
mov ecx,msg ;string start ZTG*|
mov ebx,1 ;file handle: stdout ie$QKoE
mov eax,4 ;sys_write 8?']W\)
int 80h ;kernel system call HMNjQ
1y
*[*#cMZ
mov ebx,0 ;return value 6G"AP~|0
mov eax,1 ;sys_exit *BVkviqxz
int 80h ;kernel system call ).eT~e
Gj
*IzcW6 [9
^SCZ
x86 CPU,Windows,MASM32 Df;FOTTi%
.386 HzB&+c?Z
.model flat,stdcall cHK)e2r
option casemap:none >HnD'y*
;Include 文件定义 F#_7m C
include windows.inc JJ56d)37.
include user32.inc XF2u<sDe
includelib user32.lib &0TOJ:RP
include kernel32.inc rWbuoG+8
includelib kernel32.lib !lE
(!d3M
;数据段 Oa~t&s
.data k%QhF]
szCaption db 'A MessageBox!',0 t~p9iGX<
szText db 'Hello,world!',0 zW%-Z6%D
;代码段 !mpRLBH
.code JGZ,5RTq4-
start: xMtl<Na
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ?n/:1LN,
invoke ExitProcess,NULL h 88iZK
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> f(DGC2R
<
end start A<iF37.
e =&
abu
ld94ek
AWK 7"=
BEGIN { print "Hello, world!" } ,oDZ:";
g'Ft5fQ"o/
}Evy fc#D
BASIC fl~k')s
传统版BASIC(例如GWBASIC): V~5vVY_HG&
))!Z2PfD
10 PRINT "Hello, world!" %Ua*}C
20 END D`e!CprF
>8SX ,
或在提示符输入: 5d|*E_yu
N;D(_:^
?"Hello, world!":END OM]p"Jd
{AIP\
现代版BASIC(例如Quick BASIC): <(d^2-0
1*?IDYB
Print "Hello, world!" N!;Y;<Ro_
=b,$jCv<,5
以下的语句在Quick BASIC中同样有效: F=B>0Q5
]*}*zXN/E
? "Hello,world!" X=(8t2
jL8&
AO;+XP=
BCPL &X_I^*
GET "LIBHDR" ZERUvk
({![
LET START () BE PK3)M'[
$( ci5ERv`
WRITES ("Hello, world!*N") )QaJYC^+
$) m*P~X*St
9R>A,x(
/j
-LW1:N
Befunge i1vBg}WHN
"!dlrow olleH">v o&*1Mx<+
, N&S:=x:$S
^_@ GfQMdLy\Z
8c+i+gp!
EPI mh
Brainfuck t> &$_CSWK
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
ceVej'
+++++++++++++++.>.+++.------.--------.>+.>. ;^}cZ
lZ^XZjwoM
2K,
1wqf'
C [$.oyjd
#include <stdio.h> H|F>BjXn5
\R&`bAd k
int main(void) K]@6&H-b|
{ 2|EHNy!
printf("Hello, world!\n"); BAmH2"
return 0; ZH_ J+
} ]lQhIf6)k
'4HwS$mW3
U@D=.6\B
C++ }'kk}2ej`
#include <iostream> E_WiQ?p
0plRsZ}
int main() k6[t$|lMy
{ j@UW[,UI
std::cout << "Hello, world!" << std::endl; t]eB3)FX
return 0; a<!g*UVL0M
} F8b*Mt}p
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CNbrXN
C++/CLI J;m[1Mae&
int main() 6xnJyEQUM
{ M P0ww$(
System::Console::WriteLine("Hello, world!"); 76 =uk!#3{
} O|7q,bEm^
Vize0fsD
uT]_pKm
C# (C Sharp) FD_0FMZ9,
class HelloWorldApp Fhxg^
{ ?\$77k
public static void Main() {!^HG+
{ ^N Et{]x
System.Console.WriteLine("Hello, world!"); ]o,) #/' $
} MB^b)\X
} B+zq!+ HJ
;1{S"UY
= \X<UA}
COBOL a^Zn
}R r
IDENTIFICATION DIVISION. cY\-e?`=4
PROGRAM-ID. HELLO-WORLD. j?w7X?1(
Qg9{<0{u
ENVIRONMENT DIVISION. /^/'9}7
.^JID~<?#
DATA DIVISION. Fdc bmQ
6mRvuJ%
PROCEDURE DIVISION. V7rcnk#
DISPLAY "Hello, world!". '^Sa|WXq
STOP RUN. dhm;
#B+2qD>E
Ih,~h[
Common Lisp }b\d CGVr
(format t "Hello world!~%") /jj}.X7yH
BvX!n"QIb
XHpoaHyx
DOS批处理 Z8'uZ#=Yw
@echo off OkzfQ
hC}
echo "Hello, world!" ;Kkn7&'F
DeXnE$XH
83TN6gW
Eiffel {'d?vm!r
class HELLO_WORLD s/,St!A4!
h+Dg"j<[
creation Hk6Dwe[y
make \n<N>j@3
feature ?c>j^}A/N
make is sBRw#xyS
local K bwWrf>
io:BASIC_IO pOH_ CXw
do ^8V]g1]fiG
!!io Q3oVl^q
io.put_string("%N Hello, world!") ?'h@!F%R'
end -- make =gfLl1wY[
end -- class HELLO_WORLD 38Wv&!
2]>s@?[
~"=nt@M]
Erlang 6"A|)fz
-module(hello). ?"sk"{
-export([hello_world/0]). rvr Ok
dnNc,l&g
hello_world() -> io:fwrite("Hello, World!\n"). E}1[&
5jYRIvM[Q~
Ah)7A|0rT
Forth t5eux&C
." Hello, world!" CR IOIGLtB
;TaT=%
0Y!Bb2m
Fortran 0kC!v,
WRITE(*,10) Sm,%>
10 FORMAT('Hello, World!') ,GR(y^S
STOP C= hE@
END M:C*?;K:
KZDB \T
TR:D
HTML "&C'K
<HTML> 4H1s"mP<
<HEAD> b(~NqV!i
<TITLE> Hello World! </TITLE> 6Ajiz_~U
</HEAD> OkFq>;{a
<BODY> pV>/"K
<p>Hello World!</p> bLNQ%=FjO
</BODY> < ^J!*>
</HTML> vx-u+/\
Iqo4INGIi
<ygkK5#q
HQ9+ k (
R
H -M[5K/[
k`TEA?RfQ
yl3iU:+V
INTERCAL t0?BU~f
PLEASE DO ,1 <- #13 -JUv'fk
DO ,1 SUB #1 <- #238 0 ]NsT0M
DO ,1 SUB #2 <- #112 YjG0: 9
DO ,1 SUB #3 <- #112 l<qxr.X
DO ,1 SUB #4 <- #0 ]p#Zdm1EL
DO ,1 SUB #5 <- #64 KN+*_L-
DO ,1 SUB #6 <- #238 TXy*- <#vR
DO ,1 SUB #7 <- #26 5(DCq(\P*
DO ,1 SUB #8 <- #248 R8HA X
DO ,1 SUB #9 <- #168 IlS{>6
DO ,1 SUB #10 <- #24 |4-Ey! P
DO ,1 SUB #11 <- #16 ]>`Q"g~0
DO ,1 SUB #12 <- #158 >:wk.<Z-
DO ,1 SUB #13 <- #52 9`c :sop
PLEASE READ OUT ,1 LW,!B.`@
PLEASE GIVE UP m'429E]\S
k,q` ^E8k
O
gycP4z[
Java ~8|$KD4I
public class Hello ][qZOIk@
{ &|9?B!,`
public static void main(String[] args) h!)(R<
{ %7V?7BE
System.out.println("Hello, world!"); jP}N^
} R\X=Vg
} Dy8Go4
Z"E+ TX
2Jj`7VH>
JSP N*o+m~:y
<% tpCEWdn5
out.print("Hello, world!"); u,'c:RMV
%> flmcY7ZV
TYLf..i<
orL7y&w(v:
MIXAL wBmbn=>#S
TERM EQU 19 the MIX console device number ExnszFX*
ORIG 1000 start address 1lx\Pz@ol
START OUT MSG(TERM) output data at address MSG Wje7fv
HLT halt execution l sUQ7%f
MSG ALF "MIXAL" 1 bv L
ALF " HELL" 9`vse>,-hg
ALF "O WOR" 2@A7i<p
ALF "LD " ;N4mR6
END START end of the program wV(_=LF
n}._Nb
5
9Uk9TG 5
Nuva V#sANi?mpo
<..直接输出..> +/UInAM
Hello, world! Ya,>E@oc
oTfEX4 t {
<..或者..> %7L'2/Y2x
~}TVM%0RTq
<. 57r\s8
// 不带换行 ?DpMR/
? "Hello, world!" OO\UF6MCU
ok[R`99
// 或者 4#=^YuKaF1
[;tbNVZK
// 带换行 h3JIiwv0!
?? 'Hello, world!' 0eb`9yM
.> >0~y"~M
tb_}w@:kU
6%:'2;xM
OCaml %=NqxF>>
let main () = u/hD9g~H7K
print_endline "Hello world!";; AoTL)',
Ho\z^w+T`
v'Lckw@G4
Pascal f5`exfdHE
program Hello; s<^UAdLnl
begin 7]
~'8
writeln('Hello, world!'); B%r)~?6DM
end. R':a,6O
)~!Gs/w6
N(F9vZOs
Perl VpJ2Qpd=
#!/usr/local/bin/perl GL
(YC-{
print "Hello, world!\n"; II[qWs>RG[
YJr@4!j*
dyu~T{
PHP eaCEZHr$
<?php hp[8.Z$7
print("Hello, world!"); 7(wY4T
?> HW{+THNj
BeP0lZ
=(@J+Ou
Pike GKm)wOb(*S
#!/usr/local/bin/pike *a\1*Jk
int main() )%UO@4
{ 9#pl BtQ**
write("Hello, world!\n"); =FdS'<GM
return 0; Dwwh;B
} ;i Ud3'*
T#h`BtET[
6h;$^3x$
PL/I UG1^G07s
Test: procedure options(main); u*PN1E
declare My_String char(20) varying initialize('Hello, world!'); =1LrU$\
put skip list(My_String); F#W'>WBU
end Test; ~Edm VEu
+/AW6
80 p7+W2m
Prolog h!MZ6}zb)
goal a}%>i~v<
write("hello,world!"). x/5%a{~j2
j63w(Jv/
h5B'w
Python z^=9%tLJ
#!/usr/local/bin/python &{l?j>|TM
print "Hello, world!" Vx?a&{3]-
`ZNzDr
M-0BQs`N
REXX v')T^b
F@
say "Hello, world!" ~
dmyS?Or
o- GHAQ
@u$4{sjgf\
Ruby /|hKZTZJdN
#!/usr/bin/ruby _H@S(!
print "Hello, world!\n" uvZ|6cM
"EhA _ =i
`"/@LUso
Scheme 6Pd;I,k
(display "Hello, world!") DTgF,c
(newline) +=;F vb
>_tn7Z0L
B
ljZ&wZW
sed (需要至少一行输入) yg/.=M
sed -ne '1s/.*/Hello, world!/p' 9G 9!=J
qI KVu_
}J"}poB:
Smalltalk NcFHvK
Transcript show: 'Hello, world!' m<