“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。 Kr%`L/%
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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》。 Vu,:rPqI
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以下是用不同语言写成的Hello World程序的几个例子: <Ys7`e6eY
Ada cq9d;~q
with Ada.Text_Io; use Ada.Text_Io; |UN#utw{^Y
procedure Hello is A/.z. K
begin CFeAKjG
Put_Line ("Hello, world!"); *2Q x69`
end Hello; *-gmWATC6
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汇编语言 cBU@853
<<6gsKP
x86 CPU,DOS,TASM fa,;Sw
MODEL SMALL ~TjTd
IDEAL c}w[T
STACK 100H [yVcH3GcjI
'h 7n}
DATASEG cyWDtq
HW DB 'Hello, world!$' kS_37-;
3Z74&a$
CODESEG ]o`FF="at
MOV AX, @data ar@ysBy
MOV DS, AX M+lI,j+
MOV DX, OFFSET HW #J%Fi).^)
MOV AH, 09H [Rzn>
INT 21H [}y"rs`!
MOV AX, 4C00H kLbo |p"cT
INT 21H h|ja67VG
END @@|H8mP}H
kaV Ye)~
HK<oNr.d52
x86 CPU,GNU/Linux,NASM hYh~[Kr^@^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). r`C t/]c
;Enter this into "hello.asm" then type: e_Q(l'f
;"nasm -f elf hello.asm" AmcBu"
;"ld hello.o -o hello" L'a>D
;"./hello" {>l`P{{y
Ls NJ3oy
section .data ;data section declaration T7Yg^ -"
msg db 'Hello World!',0AH fwaM ;YN_
len equ $-msg ;string length Wl3fR[@3Q
OoR0>!x Z
section .text ;code section declaration T4}q%%7l
global _start ;entry point (start of execution) %`:+A?zL
_start: mov edx,len ;string length KQ.cd]6
mov ecx,msg ;string start IFWP&20
mov ebx,1 ;file handle: stdout ~<[]l~`
mov eax,4 ;sys_write iPrAB*
int 80h ;kernel system call Dz+R Q`Vn
<(Ktf0'__
mov ebx,0 ;return value sUsIu,1Q
mov eax,1 ;sys_exit V_pKe~
int 80h ;kernel system call 5@~5RNrq2
LU@+ O12
n:YA4t7S
x86 CPU,Windows,MASM32 DJHE6XJ
.386 znd fIt^
.model flat,stdcall '8fL)Zk
option casemap:none D]d2opBLj
;Include 文件定义 SZD@<3 Nb
include windows.inc YR$d\,#R
include user32.inc ">S.~'ds
includelib user32.lib +6x:+9S
include kernel32.inc E)F"!56lV
includelib kernel32.lib If(IG]>`D
;数据段 |HK/*B
.data l
#
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szCaption db 'A MessageBox!',0 GK:pt8=
szText db 'Hello,world!',0 U`ELd:
;代码段 D~ %h3HM
.code pw1&WP&?3
start: {NV=k%MTmi
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK - Tr*G4
invoke ExitProcess,NULL Q?W}]RW
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1FmVx
end start Cg&cz]*q|
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!u|s|6{\
AWK Sc&p*G
BEGIN { print "Hello, world!" } `<d{(9:+
6w^Fee`>]
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BASIC u\|Ys
传统版BASIC(例如GWBASIC): 0"$'1g^]7
/<oBgFMoJ
10 PRINT "Hello, world!" G7H'OB
&
20 END rfxLCiV
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或在提示符输入: KmRxbf
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?"Hello, world!":END QsH Fk5)
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现代版BASIC(例如Quick BASIC): W=T,hOyh<W
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Print "Hello, world!" viR-h
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以下的语句在Quick BASIC中同样有效: 2:& [r*
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? "Hello,world!" $qj||zA
Md ,KW#
o9uir"=
BCPL (.B+U'6
GET "LIBHDR" Ndr4e?Xa,
.\+%Q)?h:
LET START () BE W02swhS
$( 4PAuEM/z
WRITES ("Hello, world!*N") <',bqsg[
$) Lj03Mx.2S
VtD:'L-
Q@/358.LA
Befunge Fr ryZe=
"!dlrow olleH">v @^kt[$X;
, KN9 e""
^_@ Acib<Mi2!-
5 MD=o7O^
p-o!K\o-1
Brainfuck L5yv}:.U
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< \4|o5, +(@
+++++++++++++++.>.+++.------.--------.>+.>. |cUBS)[)X
\@HsMV2+zN
" tUF,G(<
C IF$*6
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#include <stdio.h> &%4*~;o
*(sFr E
int main(void) w*"h#^1z
{ JgY#W1>
printf("Hello, world!\n"); /xcl0oe(
return 0; N61\]BN<
} r*t\\2
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W{v-(pW
C++ A[O' e
#include <iostream> Z,jK(7D(
nJ-U* yz
int main() x#_0
6
{ [Vaw$c-+[y
std::cout << "Hello, world!" << std::endl; coQ>CbHg
return 0; bR}{xHe
} Iib39?D W
i5 F9*
R87e"m/C%
C++/CLI B> LL
*
int main() 9>k-";
{ fer~NlX
System::Console::WriteLine("Hello, world!"); o7W1sD1O
} \6U$kMGde
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yl[6b1
C# (C Sharp) sjj*7i*
class HelloWorldApp e2PM^1{_
{ `vPc&.-K
public static void Main() w,QO!)j!
{ 0'9zXJ"
System.Console.WriteLine("Hello, world!"); 5E!G
} >1n[Y- r
} %"0g}tK6
)W& $FU4JK
1ZF>e`t8
COBOL %IbG@}54
IDENTIFICATION DIVISION. p/k6}Wl
PROGRAM-ID. HELLO-WORLD. rpu{YC1C%
mt(2HBNoz
ENVIRONMENT DIVISION. qOk=:1`3
3'zm)SXJ
DATA DIVISION. 9As K=/Buf
:"oQ _bLT
PROCEDURE DIVISION. xi
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DISPLAY "Hello, world!". F};G&
STOP RUN. =,-&h
V
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BL^8gtdn
Common Lisp Z`)}1|~B
(format t "Hello world!~%") M[@=m[#a
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,y57tY
DOS批处理 jw"]U jub
@echo off 3 O)^Hq+9
echo "Hello, world!" c)tG1|Og]
voHFU#Z$
WTcrfs)T
Eiffel hvS4"%\
class HELLO_WORLD Zh]FL8[
nc
(haYY]W\
creation U<*8KiI
make 0ThX1)SH
feature ?{O >&<~
make is 2-<i#nA3
local J~jR`2+r
io:BASIC_IO m%bw$hr
do 7:D@6<J?
!!io >; A7mi/
io.put_string("%N Hello, world!") u#l@:p
end -- make 8sG0HI$f+
end -- class HELLO_WORLD rIE
m
2yyJ19Iul
^U`Bj*"2
Erlang [;F%6MPK^
-module(hello). -W:te7
-export([hello_world/0]). n!B*n(;!u
H^c8r^#
hello_world() -> io:fwrite("Hello, World!\n"). i.e1?Zk1
;=FSpZ@
d/k70Ybk
Forth |aT&rpt
." Hello, world!" CR K; +w'/{
6jKZ.S+s)
|Ts|>"F'
Fortran {iI"Lt
WRITE(*,10) X7*i-v@
10 FORMAT('Hello, World!') H7xyK
STOP M%evk4_27
END ]R$
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%` cP|k
B3lP#ckh
HTML m;S!E-W
<HTML> avb'J^}f
<HEAD> BP6|^Q
<TITLE> Hello World! </TITLE> [LQD]#
</HEAD> g.3a5#t
<BODY> .<<RI8A
<p>Hello World!</p> YjTRz.e{[7
</BODY> Wy[Ua#Dd
</HTML> )e$}sw{t
3:XF7T
7ktSj}7W]
HQ9+ JYt)4mOo
H q;^Q1[Ari
P,|%7'? Y
VuOZZ7y
INTERCAL CBqeO@M
PLEASE DO ,1 <- #13 _%xe:X+ M
DO ,1 SUB #1 <- #238 ^4WNP
DO ,1 SUB #2 <- #112 {!lC$ SlJ
DO ,1 SUB #3 <- #112 w$X"E*~>8
DO ,1 SUB #4 <- #0 DcO$&)Eb
DO ,1 SUB #5 <- #64 }-ly'4=l
DO ,1 SUB #6 <- #238 #^+C
kHX
DO ,1 SUB #7 <- #26 s7A3CY]->
DO ,1 SUB #8 <- #248 <Be:fnPX7
DO ,1 SUB #9 <- #168 (V:z7
DO ,1 SUB #10 <- #24 =V- ^
DO ,1 SUB #11 <- #16 5d7AE^SHsH
DO ,1 SUB #12 <- #158 V!Px975P
DO ,1 SUB #13 <- #52 ScgaWJ
PLEASE READ OUT ,1 g H+s)6
PLEASE GIVE UP |4J ;s7us
3KyIBrdi?
Z?Cl5o&lb
Java 1%v!8$
public class Hello PJ-EQ6W
{
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public static void main(String[] args) KlMSkdmW
{ 3tO=
System.out.println("Hello, world!"); M@k8;_5
} l@
amAusE
} CNo'qlvF5N
qT<OiIMj^
B<99-7x3
JSP kq{PM-]l
<% ")'9:c
out.print("Hello, world!"); X=8CZq4
%> !CBvFl/v
\gBsAZE
kBh*@gf
MIXAL ~HFqAOr
TERM EQU 19 the MIX console device number ;;^OKrzWW
ORIG 1000 start address >TB"Ez09
START OUT MSG(TERM) output data at address MSG G`/5=
HLT halt execution kB2]Z}
MSG ALF "MIXAL" P}2i[m.*,
ALF " HELL" F9Hxqa#1T
ALF "O WOR" St1Ny,$yU
ALF "LD " w$XqxI/&
END START end of the program >@g+%K]
HX;JO[0
9+"R}Nxv^
Nuva ~`xaBz0q
<..直接输出..> gMGX)Y ,=/
Hello, world! AYVkJq ?
I"=a:q
<..或者..> qG]G0|f
$?HOke
<. n A<#A
// 不带换行 F}f/cG<X
? "Hello, world!" c'wxCqnE
Y<]A5cm
// 或者 w$aiVOjgT
1}7Q2Ad w
// 带换行 8_d>=*(
?? 'Hello, world!' dR9[K4`p/
.> m]7oTmS
#FZoi:'Q
4x2
;@Pd
OCaml !08\w@
let main () = T5AoBUw
print_endline "Hello world!";; IO@Ti(,
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j>}<FW-N
Pascal 6h5,XcO4
program Hello; 0b)q,]l]
begin {:63% j
writeln('Hello, world!'); iI]E%H}
end. l_ES$%d
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2C@ui728
Perl !.EDQ1k
#!/usr/local/bin/perl [z2jR(+`U
print "Hello, world!\n"; x%Fy1.
pX/42W
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PHP 7m<;"e)
<?php tO@n3"O
print("Hello, world!"); ?V{APM$x
?> $`wo8A|)
Dcep^8'
z6Xn9
Pike 6^+T_{gl
#!/usr/local/bin/pike Zv"qA
int main() ?BEO(;'
{ xoYaL
write("Hello, world!\n"); G@N-+
return 0; a,YU)v^
} ru 5T0w";V
O$K?2-
O0~Qh0~l
PL/I &^I2NpT
Test: procedure options(main); \7d T]VV
declare My_String char(20) varying initialize('Hello, world!'); 67{3/(`x
put skip list(My_String); -s!cZ3
end Test; ng-rvr
uto
E}U7]
FQgc\-8tm
Prolog
{ch+G~oS
goal z~ f;5 xtI
write("hello,world!"). R #\o*Ta
gz~)v\5D/
%8]~+#]p
Python &$x1^
#!/usr/local/bin/python !D!1%@
e
print "Hello, world!" ,WKWin
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H
s6YnNJ,SK
REXX {Rv0@)P$
say "Hello, world!" :W6R]y
KB\A<(o,
+FGw)>g8'm
Ruby 5/f"dX
#!/usr/bin/ruby gNj~o^6|@
print "Hello, world!\n" <`P7^
'z!
1oSU>I_i
3yXSv1
Scheme sq;nUA=
(display "Hello, world!") 4r-CF#o
(newline) .1@8rVp7
TEEt]R-y
ndE" v"_H
sed (需要至少一行输入) z"PU`v
sed -ne '1s/.*/Hello, world!/p' Vgg'5o&.
SU$%nK )
7W7yjG3g
Smalltalk z<~yns`Y.
Transcript show: 'Hello, world!' J^xIfV~zt
f.{/PL
&~MM\,KML
SNOBOL -SeHz.`N
OUTPUT = "Hello, world!" j}F;Bfq!
END 1(4}rB3
:vWixgLg
6qYK"^+xu
SQL QZ?%xN(4
create table MESSAGE (TEXT char(15)); EA=EcUf'
insert into MESSAGE (TEXT) values ('Hello, world!'); BHrNDpv
select TEXT from MESSAGE; &