“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。 |i~-,:/-Y
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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》。 <lNNT6[/r
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以下是用不同语言写成的Hello World程序的几个例子: X|/RV4x@Cq
Ada Ptcq/f
with Ada.Text_Io; use Ada.Text_Io; f mJK+
procedure Hello is w^=(:`
begin 54B`T/>R:E
Put_Line ("Hello, world!"); ZJ~0o2xZ'
end Hello; .z=%3p8+
!
2knSS
~H:=p
汇编语言 U&=pKbTe
Rkp
+}@Y_
x86 CPU,DOS,TASM Bo14t*(
MODEL SMALL Kv9FqrDj
IDEAL kM[!UOnC!<
STACK 100H $06('Hg&
'U*#71S
DATASEG %Ofw"W
HW DB 'Hello, world!$' .t8hTlV?<B
/I1n${{5
CODESEG 'rS\9T
MOV AX, @data zb4{nzX=
MOV DS, AX j%D{z5,nKm
MOV DX, OFFSET HW R'6(eA[K
MOV AH, 09H Ihr[44#
INT 21H |z"$^|@d?
MOV AX, 4C00H .{ZJywE<
INT 21H J7C?Z
END HG< z,gE
2
-T i<H9OV
>,tJq%
x86 CPU,GNU/Linux,NASM bfEH>pQ>#
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). $7]?P;$
;Enter this into "hello.asm" then type: U;*t5l
;"nasm -f elf hello.asm" sDR Av%w
;"ld hello.o -o hello" YJ-<t6
;"./hello" + !"YC
.C5<uW5-R
section .data ;data section declaration n~BQq-1
msg db 'Hello World!',0AH SIKaDIZ
len equ $-msg ;string length Hz[1c4)'F
Yk)fBPHr
section .text ;code section declaration 8DMqjt3B
global _start ;entry point (start of execution) $G 6kS@A
_start: mov edx,len ;string length _L` uCjA
mov ecx,msg ;string start Mk=*2=d
mov ebx,1 ;file handle: stdout %`K{0b
mov eax,4 ;sys_write cHR*.
int 80h ;kernel system call avM8-&h
,3iD/8_
mov ebx,0 ;return value .qKfhHJ
mov eax,1 ;sys_exit :8`$BbV
int 80h ;kernel system call l:bbc!3
\ykA7Y%
FV7'3fIa
x86 CPU,Windows,MASM32 2hso6Oy/v{
.386 |pbetA4&
.model flat,stdcall 2<h~:
L
option casemap:none c`hENPhW
;Include 文件定义 _Ve)M%
include windows.inc $)c[FR~a
include user32.inc BNA1"@9q
includelib user32.lib t^>P,%$
include kernel32.inc v@ qDR|?^
includelib kernel32.lib 'vu]b#l3
;数据段 ^'du@XCf}
.data JUj.:n2e
szCaption db 'A MessageBox!',0 ntB#2S
szText db 'Hello,world!',0 7lAJ
0
;代码段 %Ie,J5g5
.code ~Ym*QSD
start: 2M\7j
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK WA1yA*S
invoke ExitProcess,NULL :?= 1aiS
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> i92Z`jiR
end start _A&
[rBm|
Z+EZ</'(a
[`E_/95
AWK #*lDKn[vO
BEGIN { print "Hello, world!" }
I![/bwObG
J#4pA{01w
'rFLG+W
BASIC Pg`+Q^^6S
传统版BASIC(例如GWBASIC): <0hVDk~
g`C"t3~%S
10 PRINT "Hello, world!" 2XV|(
20 END s!yD%zO
B-L@ 0gH
或在提示符输入: a #s
Nd
BILZ XMf
?"Hello, world!":END 'Z,7{U1P
w8cnSO
现代版BASIC(例如Quick BASIC): N>sT@ >
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Print "Hello, world!" 0R+p\Nc&1
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以下的语句在Quick BASIC中同样有效: )' ,dP)b
@m:'
L7+
? "Hello,world!" 3BLHd<
+]yVSns
3
iWUxB28
BCPL e$Y7V
GET "LIBHDR" RLLL=?W@
tpeMq-
LET START () BE {- MhhRa5
$( @Xh8kvc81
WRITES ("Hello, world!*N") ,O^kZ}b
$) -)bu&
(5y*Btd=
A] o3MoSt
Befunge 8F)9.s,*
"!dlrow olleH">v ~j!|(a7
, 6 W$m,3Dg
^_@ c^&:':Z%'
{S%;By&[
KM^}d$x}s
Brainfuck X.q#ZpK
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< j
*N^.2
+++++++++++++++.>.+++.------.--------.>+.>. kZ:~m1dd
|qf9-36
-W})<{End
C #a8i($k{e
#include <stdio.h> 1OqVNp%K
f_hG2Sk
int main(void) $m+Pl[s
{ *_Pkb.3R
printf("Hello, world!\n"); jlUT9Zp
return 0; s <$*A;t
} s>>lf&7
,d=Dicaz
b+CvA(*
C++ gKPqU @$*
#include <iostream> :
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k9\n='OI
int main() f|yq~3x)
{ 3zM>2)T-
std::cout << "Hello, world!" << std::endl; /wHfc[b>
return 0; Dl}va
} S|IDFDn
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(51;cj>J
C++/CLI IUh)g1u41O
int main() n.P $E
{ j2n
4; m
System::Console::WriteLine("Hello, world!"); 3}.OSt'=
} Y[ ;Z7p
lgHzI(
.
vea[
C# (C Sharp) -#AO4xpI
class HelloWorldApp 3[m~6Ys
{ Mt121Q&"
public static void Main() oT}Sh4Wt.
{ cavzXz
System.Console.WriteLine("Hello, world!"); 4&`d$K
} {?IUf~<
} bGB5]%v,
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COBOL 2QIo|$
IDENTIFICATION DIVISION. VZA>ErB
PROGRAM-ID. HELLO-WORLD. FvBnmYnW
%-NG eN8
ENVIRONMENT DIVISION. <bBgevL+_K
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DATA DIVISION. L7.LFWq$S
]jP0Z#
PROCEDURE DIVISION. v #Q(g/^
DISPLAY "Hello, world!". B :1r;8{j
STOP RUN. \&Oc}]
]#$rTWMl'
&+pp;1ls
Common Lisp ? ~_h3bHH
(format t "Hello world!~%") Vvl8P|x.<
byj7c(
YzAGhAyw
DOS批处理 };8PPR)\y
@echo off L0xh?B
echo "Hello, world!" -$y/*'
O'W[/\A56M
2fdC @V
Eiffel 0av2w5>af
class HELLO_WORLD yrrP#F
Y2y =
P
creation BUEV+SZ4
make mDIN%/S'
feature =$vy_UN
make is RsP^T:M}$
local 95 X6V
io:BASIC_IO KWT[b?
do brt`oR
!!io Cqw`K P
io.put_string("%N Hello, world!") J`A )WsKkb
end -- make xgB-m[Xi
end -- class HELLO_WORLD 'C1yqkIa`
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A)o%\j
Erlang bRc~e@
-module(hello). xy<)zKp
-export([hello_world/0]). ]4-t*Em
JuXuS
hello_world() -> io:fwrite("Hello, World!\n"). vtf`+q
0[SrRpD
nA XWbavY
Forth 7
[?]DyOf
." Hello, world!" CR Gv}~
1cPjgBxv#
hc5iIJ]
Fortran l#%G~c8x
WRITE(*,10) ndB*^nT
10 FORMAT('Hello, World!') >WW5;7$
STOP r*4@S~;
END &GLe4zEh
*6P)HU@
H=7Nh6v
HTML tY$4k26
<HTML> u1i
?L'
<HEAD> eWAgYe2
<TITLE> Hello World! </TITLE> R//S(eU68\
</HEAD> AoN|&o
<BODY> ALnE[}N6,
<p>Hello World!</p> _f~m&="T!
</BODY> 5QJFNE
</HTML> WCZeY?_^c
p3z%Y$!Tm
F6 c1YI[
HQ9+ ^B7C8YP
H gpzZs<ST
t:.ZvA3
-
-H%FYF`
INTERCAL lC(g&(\{
PLEASE DO ,1 <- #13 b&Go'C{p
DO ,1 SUB #1 <- #238 "?TKz:9r
DO ,1 SUB #2 <- #112 [I7([l1Wvd
DO ,1 SUB #3 <- #112 H?<ceK'e
DO ,1 SUB #4 <- #0 =5Auk5&
DO ,1 SUB #5 <- #64 H@hHEzO
DO ,1 SUB #6 <- #238 &26H
DO ,1 SUB #7 <- #26 maTZNzy
DO ,1 SUB #8 <- #248 +zn207.`
DO ,1 SUB #9 <- #168 sz+Uq]Mn
DO ,1 SUB #10 <- #24 >On"BP# U
DO ,1 SUB #11 <- #16 uA2-&smw
DO ,1 SUB #12 <- #158 %R[X_n=
DO ,1 SUB #13 <- #52 N:Zf4
PLEASE READ OUT ,1 gR:21*&cz
PLEASE GIVE UP KdB9Q ;
9F"Q2^l'
a2N4Jg@
Java Kp_^ 2V?
public class Hello +4%:q~C
{ eEG]JH
public static void main(String[] args) tug\X
{ HfgK0wIi
System.out.println("Hello, world!"); jB-)/8.qk
} hu+% X.F4
} @UidQX"b
Ho:X.Z9A^
8^Ov.$rP
JSP /4Lmu+G4
<% .xp|w^
out.print("Hello, world!"); M :Aik&
%> eZWR)+aq
z.7'yJIP#
rX<gcntv
MIXAL TGJ\f
TERM EQU 19 the MIX console device number hj.Du+1
ORIG 1000 start address YQ+Kl[ec
START OUT MSG(TERM) output data at address MSG HBFuA.",
HLT halt execution yNb
:zoT
MSG ALF "MIXAL" %g>{m2o
ALF " HELL" HjFY>(e
ALF "O WOR" ~?c}=XL-
ALF "LD " \#A=twp
END START end of the program d^w*!<8
^:RDu q
$Di2BA4Di
Nuva }bs2Rxkh
<..直接输出..> \O7?!i
Hello, world! *0^t;A+
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<..或者..> jnoFNIW
X&<