“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。 ]3_b3@k
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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》。 dkC[SG`
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以下是用不同语言写成的Hello World程序的几个例子: n3a.)tcC
Ada Xqf,_I=V
with Ada.Text_Io; use Ada.Text_Io; R /+$ :
procedure Hello is 5RP kAC
begin /|0-O''
Put_Line ("Hello, world!"); G4)~p!TSQ
end Hello; n=.P46|
nuce(R
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汇编语言 ^jL '*&l
f>N DtG.6
x86 CPU,DOS,TASM SI}s
MODEL SMALL r]3-}:vU
IDEAL 2e`}O
STACK 100H
jxog8E
23}` e
DATASEG jf9+H!?^N
HW DB 'Hello, world!$' y{ur'**l
){;XI2
CODESEG b,xZY1a
MOV AX, @data Xh9QfT ,
MOV DS, AX 2cMCZuO
MOV DX, OFFSET HW @5>#<LV=E#
MOV AH, 09H nKx)R^]k
INT 21H GKBoSSnV&
MOV AX, 4C00H 7UfNz60+~
INT 21H Yuvi{ 0
END u^Q`xd1
M>AxVL
^tB1Nu%
x86 CPU,GNU/Linux,NASM Tq1\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). kaBjA*
;Enter this into "hello.asm" then type: S_ATsG*(
;"nasm -f elf hello.asm" 4 PK}lc
;"ld hello.o -o hello" xRh 22z
;"./hello" (S[z
-k'<6op
section .data ;data section declaration G@8)3 @
msg db 'Hello World!',0AH H[=\_X1o(
len equ $-msg ;string length (80m'.X
`w@:h4f
section .text ;code section declaration /"{d2
global _start ;entry point (start of execution) \@<7Vo,
_start: mov edx,len ;string length *8}b&4O~
mov ecx,msg ;string start \x<8
mov ebx,1 ;file handle: stdout \-\>JPO~<
mov eax,4 ;sys_write Itl8#LpLM
int 80h ;kernel system call 8w0~2-v.?V
<:S qMf
mov ebx,0 ;return value m:H^m/g
mov eax,1 ;sys_exit v3-/ [-XB:
int 80h ;kernel system call ~ ld.I4
/3b*dsYsl
aacy5E
x86 CPU,Windows,MASM32 `[/#,*\
.386 8U{D)KgS
.model flat,stdcall &W<7!U:2m
option casemap:none )x.%PUA
;Include 文件定义 eM7@!CdA9q
include windows.inc =2R4Z8G
include user32.inc Rh="<'d
includelib user32.lib y=3 dGOFB
include kernel32.inc &.A_d+K&
includelib kernel32.lib ]J7qsMw
;数据段 e"
v%m'G
.data "zEl2Xn28_
szCaption db 'A MessageBox!',0 q<YM,%mgj
szText db 'Hello,world!',0 X=)V<2WO
;代码段 bLc5$U$!I
.code -U|c~Cqc
start: 9CDei~
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK I Xc `Ec
invoke ExitProcess,NULL k/K)nH@)
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RX gb/VR
end start 'HA{6v,y
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)GP;KUVae
AWK ]N>ZOV,>
BEGIN { print "Hello, world!" } }M07-qIX{
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1XGg0SC
BASIC nrEI0E9
传统版BASIC(例如GWBASIC): (i&+= +"wn
-#\ T
10 PRINT "Hello, world!" 1/dL-"*0
20 END ^y5A\nz&
[$y(>]~.
或在提示符输入: 7oZ:/6_>
\u[x<-\/6
?"Hello, world!":END &V38)83a
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现代版BASIC(例如Quick BASIC): FXCBX:LnvU
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Print "Hello, world!" WK%cbFq(
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以下的语句在Quick BASIC中同样有效: @Q1!xA^S
@-@Coy 4Tt
? "Hello,world!" (HNc9QVC'W
Fa("Gok[
;&d#)&O"e
BCPL {&1L &f<
GET "LIBHDR" @?B+|*cm
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LET START () BE f;E#CjlTL
$( (-C)A-Uo&
WRITES ("Hello, world!*N") gawY{Jr8I
$) L>Y+}]~
V^7.@BeT
[@i:qB>B
Befunge >.<VD7p
"!dlrow olleH">v 6[m~xegG
, H/a gt
^_@ ^ :VH?I=
CHnclT
K V5
'-Sv1
Brainfuck &h:4TaD
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Bii'^^I;?
+++++++++++++++.>.+++.------.--------.>+.>. !vz'zy)7
!)a_@d.;i
^O}a,
C zs=3e~o3
#include <stdio.h> }Rh\JDiQ
z5@XFaQ
int main(void) D]~K-[V?l
{ |\(uO|)ju
printf("Hello, world!\n"); a`wjZ"}'[
return 0; [ycX)iM
} |/,SNE
q9
Df`6+
p?gm=b#
C++ (~~m 8VJ>
#include <iostream> w:\} B'u
b0~r/M;J
int main() n/9afIN
{ (T1< (YZ
std::cout << "Hello, world!" << std::endl; V60L\?a
return 0; Q[OwP
} dIC\U
0)&!$@HW
fD!c t; UK
C++/CLI Nj9A-*0g6N
int main() _c-3eQ1
{ f-~Y
System::Console::WriteLine("Hello, world!"); ~[CFs'`(2
} w$
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cSt)Na~C
KVZB`c$<t
C# (C Sharp) 9=j9vBV
class HelloWorldApp \ eHOHHAGW
{ ZSf &M
public static void Main() ^50dF:V(1
{ 8maWF.xq
System.Console.WriteLine("Hello, world!"); x/,;:S
} :FAPH8]
}
\HGf!zZ
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dN2JOyS
COBOL }nrjA0WN
IDENTIFICATION DIVISION. +&.zwniSS
PROGRAM-ID. HELLO-WORLD. 15ailA&(Qm
0F[f%2j
ENVIRONMENT DIVISION. Cm[}DB
e:O,$R#g
DATA DIVISION. 3)G~ud
wfo, r 7
PROCEDURE DIVISION. ^hLr9k
DISPLAY "Hello, world!". _LJF:E5L
STOP RUN. 2yA)SGri
W
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Common Lisp #E]K*mE'
(format t "Hello world!~%") #/>TuJc
R4p Pt
]-gyXE1.r
DOS批处理 `7/(sX.
@echo off KF(H
>gs
echo "Hello, world!" c~<;}ve^z
J&8KIOz14Z
lu.]R>w
Eiffel HzTmNm)
class HELLO_WORLD 8c5YX
6b|<$Je9
creation R`(2Fy%0\k
make 9KVJk</:n
feature ]BO:*&O
make is R U)(|;
local
33oW3vS
io:BASIC_IO c}(H*VY2n
do Z- feMM
!!io C8m 9H8Qm
io.put_string("%N Hello, world!") b,'O|s]"Sc
end -- make I}PI
end -- class HELLO_WORLD 6H |1IrG
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SwOW%o
Erlang ( d_z\U7l
-module(hello). /l$enexSt
-export([hello_world/0]). /DAR'9@h
,@ '^3u
hello_world() -> io:fwrite("Hello, World!\n"). Q^b&
"D'e
Yw|v5/>
Forth bWTfP8gT
." Hello, world!" CR aqON6|6K
1_+ h"LE
NWf=mrS8@$
Fortran *2h%dT:,%
WRITE(*,10) G4(R/<J,BQ
10 FORMAT('Hello, World!') ?Bf>G]zx
STOP Yc[umn^K
END `w!XO$"]Z
c5ij2X|I
u`'"=Y_E
HTML E0ED[d,
<HTML> ^8
VW$}
<HEAD> KW:N
6w
<TITLE> Hello World! </TITLE> B%tF|KKj
</HEAD> nXT`7
<BODY> yXU.PSG*
<p>Hello World!</p> nQc,^A)I
</BODY> +4 k=Y
</HTML> 'D21A8*N
x*1wsA
z$Jm1l
HQ9+ YY;<y%:8Z
H N`W[Q>n
kyHli~Nr"
av'm$I|O
INTERCAL 7${<u 0((!
PLEASE DO ,1 <- #13 2 5 \S>
DO ,1 SUB #1 <- #238 .8YxEnXw)(
DO ,1 SUB #2 <- #112 QP\9#D~
DO ,1 SUB #3 <- #112 gWr7^u&q@|
DO ,1 SUB #4 <- #0 'WW:'[Syn'
DO ,1 SUB #5 <- #64 @}
Ig*@
DO ,1 SUB #6 <- #238 cQEUHhRg!
DO ,1 SUB #7 <- #26 FI^Wh7J
DO ,1 SUB #8 <- #248 Lap?L/NS
DO ,1 SUB #9 <- #168 %Y&48''"
DO ,1 SUB #10 <- #24 M/ 64`lcb
DO ,1 SUB #11 <- #16 S)U*1t7[
DO ,1 SUB #12 <- #158 kp*v:*
DO ,1 SUB #13 <- #52 lsax.uG5x
PLEASE READ OUT ,1 CzBYH
PLEASE GIVE UP 7eCjp
O h@z<1eYZ
'C5id7O&
Java h7#\]2U$[5
public class Hello T?RY~GA
{ m}l);P^
public static void main(String[] args) o898pg
{ 27!FB@k-
System.out.println("Hello, world!"); mz0{eO
} f\
P0%
} k{2Gq1S{
ZXx1S?u
uZld9u
JSP %6[,a
<% 'APx
out.print("Hello, world!"); /#00'(oD
%> I~6)
Gk&
CQ2vFg3+o
RZHfT0*jL
MIXAL s~7a-J
TERM EQU 19 the MIX console device number DXf
ORIG 1000 start address "1,*6(;:
START OUT MSG(TERM) output data at address MSG 9 :2Bt <q
HLT halt execution IP`lx
MSG ALF "MIXAL" OH/9<T?
ALF " HELL" :A8r{`R'N
ALF "O WOR" 8c) eaDu
ALF "LD " 'pt(
END START end of the program D W U=qD+
FGn"j@m0
/bykIUTKI
Nuva ]zYIblpde
<..直接输出..> <,:{Q75
Hello, world! X(tx8~z
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<..或者..> [l-o*@
N[cIr{XBGN
<. +mrLMbBiD
// 不带换行 J|I*n
? "Hello, world!" K9@.l~n
neU=1socJ
// 或者 p<r^{y
^t3>Z|DiB^
// 带换行 '@Uu/~;h
?? 'Hello, world!' Q>$B.z
.> 2q[pOT'k
E7O3$B8
fnX[R2KZ
OCaml fd4gB6>
let main () = syr0|K[
print_endline "Hello world!";; k'8q/]
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ug,AvHEnB
Pascal i@9
qp?eb
program Hello; 45 ^ Z5t
begin gs1yWnSv5
writeln('Hello, world!'); A
l;a~45
end. 8)S)!2_h
^$'{:i
b"X1
Perl a]Pi2:S
#!/usr/local/bin/perl rfonM~3?'
print "Hello, world!\n"; f:M^q ;
,
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LZ)g&A(j?
PHP d*tWFr|J-
<?php :Fhk$?/r
print("Hello, world!"); h2'6W)
?> bf/6AY7
J299mgB
:? )!yI
Pike 5=V"tQ&d9U
#!/usr/local/bin/pike qeM DC#N
int main() ,esEh5=Ir
{ m%.4OXX"&
write("Hello, world!\n"); 80Y%C-Y:
return 0; qoZi1,i'
} X QLP|v;"
PV\J]
|d,%
uQ3sRJi
PL/I j)/Vtf
Test: procedure options(main); jvQ^Vh!mC
declare My_String char(20) varying initialize('Hello, world!'); |]<#![!h#
put skip list(My_String); b#@xg L*D
end Test; ~ox}e(xy
n#}@|"J
fK:4jl-r
Prolog WzFXF{(
goal A!GvfmzqIn
write("hello,world!"). CE
M4E
W^09tx/I
l1]N&jN{
Python O`CZwXD
#!/usr/local/bin/python S$SCW<LuN
print "Hello, world!" /\Nc6Z/ L
Vl+UC1M}B>
IwYfs]-
REXX 2@bOy~$A
say "Hello, world!" J t.<Z&
8{0XqE~ix=
SOG(&)b
Ruby GI{EP&