“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。 ~aob@(
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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》。 #{cy( &cz
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以下是用不同语言写成的Hello World程序的几个例子: 5'zXCHt
Ada }Le]qR9Y]
with Ada.Text_Io; use Ada.Text_Io; U$OZkHA[
procedure Hello is +,76|oMsQ%
begin `b?uQ\#-M
Put_Line ("Hello, world!"); 4b;Mb
end Hello; ZVjB$-do
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X6Ha C+P
汇编语言 QN:v4,$d
vF72#BNs
x86 CPU,DOS,TASM kK? SG3
MODEL SMALL ^tB1Nu%
IDEAL #Bd]M#J17a
STACK 100H bZnOX*y]
6D;N.wDZ
DATASEG SVCh!/qe\
HW DB 'Hello, world!$' MGg(d
]fyfL|(;
CODESEG )Qbd/zd\U
MOV AX, @data XqTguO'
MOV DS, AX G/_IY;
MOV DX, OFFSET HW @oXGa>Ru
MOV AH, 09H D-gH_ff<]9
INT 21H IG^@VQ%
MOV AX, 4C00H ')m!48
INT 21H jP+yN|
END /v{+V/'+
qN!oN*
t-\+t<;
x86 CPU,GNU/Linux,NASM Q0U~s\<
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). wI%M3XaBws
;Enter this into "hello.asm" then type: B8@mL-Z-;
;"nasm -f elf hello.asm" /5@YZ?|#2
;"ld hello.o -o hello" &.)=>2
;"./hello" |2(q9j
+:MSY p
section .data ;data section declaration @Cj!MZ=T
msg db 'Hello World!',0AH 9[0iIT$q$
len equ $-msg ;string length v] m/$X2
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section .text ;code section declaration -,J<X\
global _start ;entry point (start of execution) {2\Y%Y'}*
_start: mov edx,len ;string length R<|\Z@z
mov ecx,msg ;string start ].d2C J'
mov ebx,1 ;file handle: stdout ;+Jx,{)
mov eax,4 ;sys_write &G{GLP?H
int 80h ;kernel system call &o:5lxR{
[M|^e;tWK
mov ebx,0 ;return value 6h:QSVfx
mov eax,1 ;sys_exit n
Bu!2c
int 80h ;kernel system call ?@64gdlwq
OH`a3E{e
\6b~$\~B
x86 CPU,Windows,MASM32 u$nzpw0=H
.386 k&Pt\- 9on
.model flat,stdcall &YhAB\Rw
option casemap:none }k^uup*{
;Include 文件定义 p Cz6[*kC
include windows.inc ]J7qsMw
include user32.inc =KE7NXu]-
includelib user32.lib dY1t3@E
include kernel32.inc :qzg?\(
includelib kernel32.lib o E+'@
;数据段 q<YM,%mgj
.data B%F]K<
szCaption db 'A MessageBox!',0 bLc5$U$!I
szText db 'Hello,world!',0 CoN[Yf3\
;代码段 -]N2V'QB
.code %>|FJ
start: 0z8(9DlTc
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK MB]E[&Q!
invoke ExitProcess,NULL 8lyIL^
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 'xW=qboOp
end start ;UdM8+^/V]
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wh:;G`6S
AWK xT*'p&ap
BEGIN { print "Hello, world!" } vq$6e*A
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BASIC Y>x{ [er
传统版BASIC(例如GWBASIC): EC+t-:a]
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10 PRINT "Hello, world!" j7I=2xnTWu
20 END R7::f\I
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或在提示符输入: 4_#$k{
v?8WQNy
?"Hello, world!":END Ob0sB@
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现代版BASIC(例如Quick BASIC): 8}QM~&&.
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Print "Hello, world!" $>rt0LOF
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以下的语句在Quick BASIC中同样有效: Iiy5;:CX:q
9{Hs1MD[
? "Hello,world!" Yh<F-WOo2
)nm+_U
4n,&,R r#
BCPL K?.~}82c
GET "LIBHDR" V)$!WPL@
C5 ~#lNC
LET START () BE t{k:H4
$( !I7$e&Uz@
WRITES ("Hello, world!*N") ff--y8h
$) Y\
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Aztrq
$|$@?H>K
Befunge J8'"vc} =
"!dlrow olleH">v .f~9IAXP`
, 4.9qB
^_@ d4y#n=HnnV
EC?5GNGT,
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Brainfuck VG5+u,U6>
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ;,{_=n>
+++++++++++++++.>.+++.------.--------.>+.>. o/AG9|()4
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C P\"kr?jZP
#include <stdio.h> v93b8/1
{&1L &f<
int main(void) cy%M$O|hX5
{ is;g`m
printf("Hello, world!\n"); ?:R ]p2 ID
return 0; 6h9(u7(-N
} '|C%X7
!Dd'*ee-;
(-C)A-Uo&
C++ A 3 V
#include <iostream> C:Ef6ZW
196aYLE
int main() u]ms~rO
{ ,%pCcM)
std::cout << "Hello, world!" << std::endl; [@i:qB>B
return 0; BMp'.9Qgm
} ((M,6Q}
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C++/CLI \h
~_<)
int main() Bii'^^I;?
{ !vz'zy)7
System::Console::WriteLine("Hello, world!"); EjP;P}_iK
} 6,t6~Uo/
& SXw=;B
rm-d),Zt
C# (C Sharp) M=,pn+}y>
class HelloWorldApp %&L13:
{ V.B@@ ;
public static void Main() 6uE20O<z]
{ k_pv6YrE
System.Console.WriteLine("Hello, world!"); poz_=,c
} <) * U/r
} kpgvAKyx
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Ts!'>_<Je
COBOL ')xOL=w
IDENTIFICATION DIVISION. !2t7s96
PROGRAM-ID. HELLO-WORLD. CCTU-Xz/
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ENVIRONMENT DIVISION.
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R ]Ev=V'U
DATA DIVISION. fe\lSGmf
@.;+WQE
PROCEDURE DIVISION. }geb959
DISPLAY "Hello, world!". ^4sfVpD2!
STOP RUN. mSYjc)z
M`Y^hDl 6
%lCZ7z2o
Common Lisp H-_gd.VD
(format t "Hello world!~%") !Fl'?Kz
::Zo` vP
/WQ.,a
DOS批处理 EL,k z8
@echo off ztVTXI%Kz
echo "Hello, world!" \%7*@&
/,G `V
'!m6^*m|c
Eiffel xpdpD
class HELLO_WORLD ysnW3q!@
5>}$]d/o
creation MCN>3/81
make ']k<'`b|
feature FJvY`zqB
make is x80IS:TP
local %+*=Vr
io:BASIC_IO 4 OPY
do *'((_NZ>
!!io '#6eUb
io.put_string("%N Hello, world!") ox-m)z `7
end -- make P~ObxY|
end -- class HELLO_WORLD Nbl&al@"
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(?e%w}
Erlang ,YD7p= PY
-module(hello). kjYM&q
-export([hello_world/0]). +O/b[O'0
2^r~->
hello_world() -> io:fwrite("Hello, World!\n"). vF^d40gV
s#?ZwD,=
@^| [J
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Forth iil<zEic
." Hello, world!" CR &%OY"Y~bI!
y% bIO6u:
4c5BlD
Fortran %IsodtkDu
WRITE(*,10) f.w",S^
10 FORMAT('Hello, World!') PK]3uh
STOP i{^T;uAE
END wOAR NrPx2
QFP9"FM5F
H )ej]DXy
HTML ACyK#5E
<HTML> s%:fZ7y
<HEAD> j[U#J
<TITLE> Hello World! </TITLE> wm~7`&
</HEAD> |62` {+
<BODY> V'vWz`#
<p>Hello World!</p> B=0^Rysg
</BODY> Ge?Wmq>
</HTML> 4l 67B]o
x9YQd69
<YvXyIs
HQ9+ E+]}KX:
H zud_BOq{f
8w5}9}xF
X%yG{\6:
INTERCAL :[CV_ME.;
PLEASE DO ,1 <- #13 GD4S/fn3
DO ,1 SUB #1 <- #238
RHUZ:r
DO ,1 SUB #2 <- #112 >~o-6g
DO ,1 SUB #3 <- #112 t6"%u3W8M
DO ,1 SUB #4 <- #0 C:B 7%<
DO ,1 SUB #5 <- #64 KlT:&1SB9
DO ,1 SUB #6 <- #238 Sf?;j{?G
DO ,1 SUB #7 <- #26 Vuz.b.,i`
DO ,1 SUB #8 <- #248 =F+v+zP7P
DO ,1 SUB #9 <- #168 v~mVf.j1
DO ,1 SUB #10 <- #24 ?+]=|hN
DO ,1 SUB #11 <- #16 p@jw)xI
DO ,1 SUB #12 <- #158 i<Z%
DO ,1 SUB #13 <- #52 B|m)V9A%-
PLEASE READ OUT ,1 &J3QO%
PLEASE GIVE UP :8`A
KQr+VQdq>
xO|r<R7d7
Java RqA>" [L
public class Hello JLu$1A@ '
{ rqjq}L )
public static void main(String[] args) g<Z :`00|
{ ?~o`mg
System.out.println("Hello, world!"); 5m1J&TZ0
} OHndZ$'fI
} s!IIvF
3-/|G-4k7
0GUJc}fgvN
JSP |Y
uf/G%/
<% Yc7YNC.
out.print("Hello, world!"); fl-J:`zyyZ
%> {w2]
Is2F
HPphTu}`
*D|a`R!Y
MIXAL WZ' Z"'
TERM EQU 19 the MIX console device number 1Dr&BXvf]8
ORIG 1000 start address Jxvh;
START OUT MSG(TERM) output data at address MSG h ;*x1BVE
HLT halt execution YYQvt
MSG ALF "MIXAL" @;egnXxF<