“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。 Qu!Lc:oM?
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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》。 HA>b'lqBM
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以下是用不同语言写成的Hello World程序的几个例子: $TWt[
Ada ?-Fp rC
with Ada.Text_Io; use Ada.Text_Io; ?~;G)5
procedure Hello is ~[Mm0L}8
begin GYZzWN}U
Put_Line ("Hello, world!"); (@~d9PvB>
end Hello; JZ'`.yK:
MJb!+E+
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汇编语言 RD<l<+C^~
UuW"
x86 CPU,DOS,TASM Ydh]EO0'
MODEL SMALL @MS;qoc
IDEAL V`=#j[gX)=
STACK 100H h]&8hl_'m
|lrLTI^a
DATASEG B<x)^[ <v
HW DB 'Hello, world!$' k~h'`(
g!i\AMG?
CODESEG 94LFElE3
MOV AX, @data BJwPSKL
MOV DS, AX t=Tu-2,k
MOV DX, OFFSET HW 6*le(^y`
MOV AH, 09H )k{zRq:d
INT 21H S8^W)XgC;
MOV AX, 4C00H 1
@tVfn}
INT 21H Y[#i(5w
END TdlF~ca|
Oe5=2~4O
ANZD7v6a
x86 CPU,GNU/Linux,NASM kK>PFk(
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). CQ9B;i`
;Enter this into "hello.asm" then type: ]z;%%'gW6
;"nasm -f elf hello.asm" p=V (_
;"ld hello.o -o hello" vE^Hk!^
;"./hello" uAwT)km
{
);'8*e'
section .data ;data section declaration +h.$<=
msg db 'Hello World!',0AH fE8/tx](
len equ $-msg ;string length {=VauF
:%~+&qS
section .text ;code section declaration MS)(\&N
global _start ;entry point (start of execution) /{#1w\
_start: mov edx,len ;string length |MY6vRJ(
mov ecx,msg ;string start .n'z\]-/Q
mov ebx,1 ;file handle: stdout bzz=8n
mov eax,4 ;sys_write ;Z\jX[H
int 80h ;kernel system call -L}crQl.'c
89?$xm _m
mov ebx,0 ;return value *+{umfZy
mov eax,1 ;sys_exit aOFF"(]Cl
int 80h ;kernel system call |t5K!?{i
RBd{1on
#p_3j 0S
x86 CPU,Windows,MASM32 4{7O}f
.386 Pfj{TT.#L
.model flat,stdcall +}@1X&v:
option casemap:none b`)^Ao:
;Include 文件定义 BrcT`MM[(=
include windows.inc I"eXoqh
include user32.inc rZm|7A)i
includelib user32.lib (sSMH6iCif
include kernel32.inc why;1z>V
includelib kernel32.lib sN.h>bd
;数据段 4IuQQ
.data df; -E
szCaption db 'A MessageBox!',0 PBc.}TSGj
szText db 'Hello,world!',0
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;代码段 l6IpyIex
.code BuII|j
start: Nz %{T
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ~ x-
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invoke ExitProcess,NULL `'H"|WsT
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> {B8W>>E
end start z-<U5-'
o*& D;
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AWK :f<3`x'
BEGIN { print "Hello, world!" } ]U.1z
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t=J WD2
BASIC 8T6.Zhv
传统版BASIC(例如GWBASIC): =QXLr+
y@
bq{":[a
10 PRINT "Hello, world!" %9B r
20 END E(N?.i-%$
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或在提示符输入: })f4`$qf
L8sHG$[
?"Hello, world!":END JFf*v6:,
@5jJoy(mX@
现代版BASIC(例如Quick BASIC): ]Ng K(IU
g(){wCI
Print "Hello, world!" |d =1|C%,
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以下的语句在Quick BASIC中同样有效: *Y(v!x \L
uH 1%diL^
? "Hello,world!" X~wkqI#d%E
JsAl;w
hqOy*!8'@
BCPL t '
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GET "LIBHDR" p w(eWP
r6k0=6i
LET START () BE xLhN3#^m
$( S3EM6 `q'
WRITES ("Hello, world!*N") 4Rj;lAlwB
$) s}yJkQb
KKpO<TO
@=4K%SCw
Befunge Q[?O+
"!dlrow olleH">v \l)<NZ\
, ODa+s>a`^
^_@ [^sv.
X-,scm
3{OY&
Brainfuck ,Yx"3i,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< el
GP2x#:
+++++++++++++++.>.+++.------.--------.>+.>. g_ 'F(An
49.
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C 3>LyEXOW
#include <stdio.h> {v{qPYNyh
"f/91gIzm'
int main(void) }NX9"}/
{ n/*BK;
printf("Hello, world!\n"); /Xa_Xg7
return 0; sDNV_}
h
} *j9{+yO{ZE
.<uxZ
=D88jkQe"
C++ \z'A6@
#include <iostream> []B9Me
1HOYp*{#wP
int main() : V16bRpjL
{ zzmZ`Ya
std::cout << "Hello, world!" << std::endl; EAiE@r>4
return 0; sbnNk(XINQ
} [>+}2-#
V^Gz7`^
Th1/Bxb:
C++/CLI i"|="O0v5
int main() l"9.zPvT<
{ Oa7x(wS
System::Console::WriteLine("Hello, world!"); Ut"~I)S{LT
} R1.No_`PHq
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=R+z\`2
C# (C Sharp) v4_p3&aj
class HelloWorldApp NR3]MGBKv
{ eteq Mg}M
public static void Main() Vf?+->-?{
{ =apcMW(zn
System.Console.WriteLine("Hello, world!"); #H]b Xr
} Hj&mwn]
} pPr/r& r
!YUMAp/
#XSs.i{
COBOL cH$zDm1
IDENTIFICATION DIVISION. 8Q $fXB
PROGRAM-ID. HELLO-WORLD. 2de[ yz
3a#X:?
ENVIRONMENT DIVISION. q:Lw!'Zh
N^i<A2'6S;
DATA DIVISION. }~gBnq_DDU
)Rhy^<xH
PROCEDURE DIVISION. E+XpgR5
DISPLAY "Hello, world!". _3_d;j#G U
STOP RUN. rKZ1
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Bl,rvk2
Twscc"mK
Common Lisp c*0pF=3
(format t "Hello world!~%") `dB!Ia|
96W!~w2xx
-mD<8v[F
DOS批处理 f5)4H
@echo off ,PG d
echo "Hello, world!" HEZgHL
Be?b|
G!M
jpND"`Q
Eiffel tnx)_f
class HELLO_WORLD 'k|?M
3&*_5<t\X
creation "YIrqk
make vfb~S~|U6g
feature B(}u:[
b^S
make is <hG=0Zc r
local KIt:ytFx
io:BASIC_IO Vs>/q:I
do UsT+o
!!io w&6c`az8
io.put_string("%N Hello, world!") EBF608nWfW
end -- make $i#
1<Qj
end -- class HELLO_WORLD @8[3]<
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x9fNIuAQ
Erlang 1.+w&Y5
-module(hello). e;LJdd
-export([hello_world/0]).
!'-K>.B
U}9B
wr^
hello_world() -> io:fwrite("Hello, World!\n"). A0L&p(i
hg8gB8Xq
t\[aU\4-7
Forth uXx c2}
." Hello, world!" CR " oWiQ{\IP
:mwNkT2et
j\V9o9D
Fortran Q/e$Ttt4J
WRITE(*,10) Bq}p]R3X
10 FORMAT('Hello, World!') 9C-!I,
STOP eURy]
END Qg
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HTML JN5<=x5r
<HTML> }=kf52Am,}
<HEAD> H^Th]-Zl
<TITLE> Hello World! </TITLE> !1MSuvWP
</HEAD> ym,UJs&
<BODY> |T53m;D
<p>Hello World!</p> G]q1_q4P1?
</BODY> 9v7l@2/
</HTML> zu6Y*{$>g
T~I5W=y
=ytB\e
HQ9+ '\[o>n2
H }F=+*-SYZ
X2
{n&K
7%aaqQ1T
INTERCAL 5<-_"/_
PLEASE DO ,1 <- #13 ]ZkhQ%
DO ,1 SUB #1 <- #238 f<.43kv@
DO ,1 SUB #2 <- #112 d
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DO ,1 SUB #3 <- #112 5B+>28G%
DO ,1 SUB #4 <- #0 h-rPLU;Bw
DO ,1 SUB #5 <- #64 w6F'rsko]
DO ,1 SUB #6 <- #238 Y..
DO ,1 SUB #7 <- #26 ,X Zo0!
DO ,1 SUB #8 <- #248 L4th 7#
DO ,1 SUB #9 <- #168 Fv n:V\eb
DO ,1 SUB #10 <- #24 "*o54z5"
DO ,1 SUB #11 <- #16 JX_hLy@`
DO ,1 SUB #12 <- #158 e/@t U'$
DO ,1 SUB #13 <- #52 )9sRDNr
PLEASE READ OUT ,1 dQfVdqg
PLEASE GIVE UP i#I+
B7"/K]dR:
?`+46U%
Java m2o*d$Ke
public class Hello klC;fm2C
{ v3 $+l1
public static void main(String[] args) `I$'Lp#5
{ "eWN52
System.out.println("Hello, world!"); a`.] 8Jy)
} ; z_ZZ(W
} \RcB,?OK
Y,O)"6ev
R:+2}kS5e{
JSP ]w!gv
/;
<% ]d#Lfgo
out.print("Hello, world!"); 3`@alhD'
%> Vl;GQe
w9D<^(_}/
FYIzMp.4
MIXAL Do@:|n
TERM EQU 19 the MIX console device number SJY<#_b
ORIG 1000 start address R["2kEF
START OUT MSG(TERM) output data at address MSG -uZ bVd
HLT halt execution J[9yQ
MSG ALF "MIXAL" D[. ; H)V
ALF " HELL" e%VJ:Dj
ALF "O WOR" <b74L
ALF "LD " et|P5%G
END START end of the program A|sTnhp~
i_OoR"J%
ZM oV!lu
Nuva %1Gat6V<'
<..直接输出..> wN,DTmtD
Hello, world! a\an
..yuEA
<..或者..> V"n0"\k,
I(fq4$
<. 41luFtE9
// 不带换行 @DgJxY|
? "Hello, world!" (fON\)l
[; M31b3
// 或者 k|W =kt$ P
y=y=W5#;77
// 带换行 *ayn<Vlh`^
?? 'Hello, world!' mQt';|X@
.> $Xf1|!W%a%
6x KbK1W
T1bPI/
OCaml et";*EZJX
let main () = .5+*,+-
print_endline "Hello world!";; c)8V^7=Q
?qr-t+
}J}a;P4
Pascal c-z2[a8
program Hello; qJ QE|VM&
begin |B&KT
writeln('Hello, world!'); &wR