“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。 IeYYG^V<A
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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》。 { 'b;lA]0
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以下是用不同语言写成的Hello World程序的几个例子: gAAC>{Wh
Ada VF`!ks
with Ada.Text_Io; use Ada.Text_Io; z,,"yVk`,
procedure Hello is ale'-V)5
begin *5)UIRd
Put_Line ("Hello, world!"); aTcz5g0"
end Hello; ~I||"$R
eiMP:
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汇编语言 A`7(i'i5]
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x86 CPU,DOS,TASM P$EiD+5#z
MODEL SMALL K43%9=sM
IDEAL J(]|)?x2
STACK 100H 2Q6;SF"Z
u)@:V)z
DATASEG )Zq'r L<
HW DB 'Hello, world!$' 4*X Nk;Dx
}UPC~kC+Z
CODESEG Xm#W}Y'
MOV AX, @data UoxlEec
MOV DS, AX v>8.TE~2
MOV DX, OFFSET HW En\@d@j<u
MOV AH, 09H e,%|sAs[
INT 21H p:08q
B|uQ
MOV AX, 4C00H ~1O|4mssS
INT 21H eoiz]L
END 78l);/E{v
p%DU1+SA
-06G.;W\^
x86 CPU,GNU/Linux,NASM ^lp=4C9
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). "xlR>M6e
;Enter this into "hello.asm" then type: 6 byeO&d
;"nasm -f elf hello.asm" ;W-
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;"ld hello.o -o hello" gTj,I=3$?e
;"./hello" :E9pdx+
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section .data ;data section declaration uE1;@Dm+
msg db 'Hello World!',0AH #D9.A7fCc5
len equ $-msg ;string length '8 .JnCg
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section .text ;code section declaration 2;gvo*k
global _start ;entry point (start of execution) ]'5Xjcx
_start: mov edx,len ;string length _d 6'f8[&
mov ecx,msg ;string start 8&JB_%Gb
mov ebx,1 ;file handle: stdout /9br &s$B
mov eax,4 ;sys_write jSjC43lh
int 80h ;kernel system call 2E1`r@L
@&?(XY 'M%
mov ebx,0 ;return value /?;'y,(Q
mov eax,1 ;sys_exit ,7d/KJ^7
int 80h ;kernel system call |y^=(|eM
,sitO y}ks
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x86 CPU,Windows,MASM32 PhyIea
.386 _:[@zxT<x
.model flat,stdcall Ao\P|K9MyL
option casemap:none 3CD#OCz7&
;Include 文件定义
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include windows.inc 0`"oR3JY
include user32.inc 'I>USl3 hI
includelib user32.lib sSU|N;"Y
include kernel32.inc uH*6@aYPo
includelib kernel32.lib %*Ex2we&
;数据段 y'm!h?8
.data x=cucZ
szCaption db 'A MessageBox!',0 r#OPW7mhE
szText db 'Hello,world!',0 'Q=;I
;代码段 z%
bH?1^o
.code vCP[7KhGj
start: G4'Ia$
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK S]fu
M%
invoke ExitProcess,NULL 1r=cCM
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lU doMm
end start <8}FsRr;J
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joI) 6c
AWK Oa/zEH
BEGIN { print "Hello, world!" } bL
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BASIC
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传统版BASIC(例如GWBASIC): IW~wO
S L
5k^|
10 PRINT "Hello, world!" qHZDo[
20 END O[VY|.MEk
;j%I1k%A
或在提示符输入: ]mMJ6n
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?"Hello, world!":END kBZ1)?
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现代版BASIC(例如Quick BASIC): MS\vrq'_
>$'z4TC\T
Print "Hello, world!" F6}RPk\=i
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以下的语句在Quick BASIC中同样有效: $A?9U}V#^
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? "Hello,world!" {R ),7U8
Nbr$G=U
V~/G,3:0y%
BCPL Bh&pZcm|
GET "LIBHDR" '?Dxe
B
ai-s9r'MI?
LET START () BE _;03R{e*
$( ^m%#1Zd
WRITES ("Hello, world!*N") t}eyfflZ
$) ?)1Y|W'Rv
jae9!Wi
5csh8i'V
Befunge 44}5o
"!dlrow olleH">v Mq$K[]F
, qf(mJlU
^_@ KZjh<sjX|
zzZEX
W#bYz{s.
Brainfuck -~{Z*1`,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ]QaKXg)3q
+++++++++++++++.>.+++.------.--------.>+.>. i"G'#n~e
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C ZwDL
#include <stdio.h> AI2XNSV@Yl
nW)+-Wxq
int main(void) w5 . ^meU
{ w~u{"E$
printf("Hello, world!\n"); <}J!_$A
return 0; -iiX!@
} zz*PAYl.
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C++ B2[f1IMI
#include <iostream> Y2DL%'K^
_BP%@o
int main() |E >h*Y
{ Rv&"h_"t
std::cout << "Hello, world!" << std::endl; <uuumi-!%G
return 0; iI<c
} <'4Wne.z!
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Lw\u{E@
C++/CLI ;3/}"yG<p
int main() sa8O<Ab
{ j~N*T XkC
System::Console::WriteLine("Hello, world!"); y8$3kXh
} f![] :L
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sg,\!'
C# (C Sharp) 0i\>(o
class HelloWorldApp -4x! #|]
{ :=hL}(~]
public static void Main() sa+
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{ :=B.)]F.)
System.Console.WriteLine("Hello, world!"); 7"Xy8]i{z
} nDvfb*\
} pl>b 6 |
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9CS"s_
COBOL wK2$hsque
IDENTIFICATION DIVISION. {LiJ=Ebt
PROGRAM-ID. HELLO-WORLD. \r
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~+' f[!^
ENVIRONMENT DIVISION. h^(U:M=A
1<vJuF^
DATA DIVISION. fR[8O\U~
LhAN( [
PROCEDURE DIVISION. gqv+|:#
DISPLAY "Hello, world!". IrZjlnht
STOP RUN. C+/EPPi
n*9QSyJN]
h~Ir=JV
Common Lisp yr+QV:oVA
(format t "Hello world!~%") !!L'{beF
[,Ul
X}'rPz\Lu
DOS批处理 lai@,_<GV
@echo off >q;|
dn9
echo "Hello, world!" L<dh\5#p9Y
9 5!xJdq
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Eiffel 7a_8007$l
class HELLO_WORLD nP*DZC0kE&
nrE.0Ue1
creation NCg("n,jx
make +ase>'<N#
feature "zw{m+7f,
make is IgJG,!>h
local #.u&2eyqQ
io:BASIC_IO )r"R
do *As"U99(
!!io <,O|fY%
io.put_string("%N Hello, world!") W
~MNst?
end -- make ?4%#myO3a
end -- class HELLO_WORLD ,r3`u2)
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Erlang IHW s<U
-module(hello). i=^6nwD&
-export([hello_world/0]). iaMl>ua
i*l=xW;bM
hello_world() -> io:fwrite("Hello, World!\n"). lw8t#_P
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y z3=#
Forth SIM>Lz
." Hello, world!" CR Bs3&yEq(
2 .Xx)(>
v#9i|
Fortran h+_:zWU
WRITE(*,10) gr!!pp;
10 FORMAT('Hello, World!') MYJMZ3qBi
STOP wg
k[_i
END /V/)A\g
#3>jgluM'
"\lOOp^-
HTML (uHyWEHt
<HTML> n[;)(
<HEAD> |BtFT
<TITLE> Hello World! </TITLE> mxH63$R
</HEAD> f\hQ>MLzt
<BODY> `"V}Wq ?I
<p>Hello World!</p> ,9KnC=_y
</BODY> 4K~>
</HTML> Ii3F|Vb G
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O<AGAD
HQ9+ wqjR-$c
H /Aw@26
%b h:c5
O#!|2qN
INTERCAL r|z B?9Q
PLEASE DO ,1 <- #13 Gf!c
DO ,1 SUB #1 <- #238 @5??`n
DO ,1 SUB #2 <- #112 %<|<%~l&
DO ,1 SUB #3 <- #112 all2?neK
DO ,1 SUB #4 <- #0 5|}u25J
DO ,1 SUB #5 <- #64 b!/-9{
DO ,1 SUB #6 <- #238 ;i [;%
DO ,1 SUB #7 <- #26 /,<s9
:
DO ,1 SUB #8 <- #248 hq&9S{Ep
DO ,1 SUB #9 <- #168 ,l,q;]C%
DO ,1 SUB #10 <- #24 |<8Fa%!HHc
DO ,1 SUB #11 <- #16 EZp >Cf7
DO ,1 SUB #12 <- #158 @d0~'_vtB
DO ,1 SUB #13 <- #52 6#:V3 ;
PLEASE READ OUT ,1 0=9$k
PLEASE GIVE UP X_3hh} =
GUJ?6;
m}beT~FT_
Java 8wkt9:
public class Hello %5n'+- XVj
{ F[B=sI
public static void main(String[] args) Lv)1
)'v0
{ tp"eXA0n
System.out.println("Hello, world!"); qjg Z
} f"4w@X2F
} kf95 )iLo
v4X ` Ul*
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JSP S*7 6V"")
<% #B!M,TWf9s
out.print("Hello, world!"); 4)XB3$<
%> s._,IW;
fL-$wK<p<
q}z`Z/`/
MIXAL CFoR!r:X
TERM EQU 19 the MIX console device number =L?2[a$2;
ORIG 1000 start address YB:}Lb
START OUT MSG(TERM) output data at address MSG g<$2#c}
HLT halt execution uA t{WDHm
MSG ALF "MIXAL" N>)Db
ALF " HELL" ^/}&z