“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。 _BLSI8!N@
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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》。 Q.E^9giC
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以下是用不同语言写成的Hello World程序的几个例子: sd@gEp)L
Ada "T1#*"{j
with Ada.Text_Io; use Ada.Text_Io; H-
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procedure Hello is E29gnYxu8
begin nTy,Jml
Put_Line ("Hello, world!"); Qbt>}?-
end Hello; H6CGc0NS+
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汇编语言 f`]E]5?
nIKT w
x86 CPU,DOS,TASM dVtLYx
MODEL SMALL M^Ay,jK!
IDEAL 2l/5i]Tq
STACK 100H +?txGHQq
C\>Mt
DATASEG 3k[<4-
HW DB 'Hello, world!$' -5_xI)i
2gR_1*|
CODESEG +:Q/<^Z
MOV AX, @data 1;~ 1U9V
MOV DS, AX DoB3_=yJ+
MOV DX, OFFSET HW MG5Sn*(C
MOV AH, 09H ,~?A.
5
INT 21H iK:qPrk-
MOV AX, 4C00H {,C8}8a W
INT 21H %ih7Jt
END +P)[|y +e
!#gE'(J;c
^8*SCM_A
x86 CPU,GNU/Linux,NASM s!fY^3
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 'xXqEwi4
;Enter this into "hello.asm" then type: w|FVqX
;"nasm -f elf hello.asm" QOy&!6
;"ld hello.o -o hello" 0i(?LI_S
;"./hello" x|i3e&D
rxI&;F#
section .data ;data section declaration :w_1J'D}
msg db 'Hello World!',0AH (?3\.tQ}}
len equ $-msg ;string length !E#.WX
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section .text ;code section declaration aKzD63
global _start ;entry point (start of execution) ~Q9)Q
_start: mov edx,len ;string length a`X&;jH0ef
mov ecx,msg ;string start =X5&au o
mov ebx,1 ;file handle: stdout &vvx"
mov eax,4 ;sys_write N\e@$1
int 80h ;kernel system call Au*?)X- $
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mov ebx,0 ;return value $yqq.#1
mov eax,1 ;sys_exit 2m_M9e\
int 80h ;kernel system call YYr&r.6
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x86 CPU,Windows,MASM32 SFgIY]
.386 bYB}A:
.model flat,stdcall (U(x[Df)
option casemap:none r<"/P`r
;Include 文件定义 ~teW1lMu(
include windows.inc A.x}%v,E
include user32.inc v]SE?xF{U
includelib user32.lib Y"rV[oe
include kernel32.inc !;!~5"0~"
includelib kernel32.lib +5|nCp6||j
;数据段 i/Lq2n3 )
.data {,2_K6#
szCaption db 'A MessageBox!',0 f>/ 1KV
szText db 'Hello,world!',0 Jl4XE%0
;代码段 q/-j`'A_pb
.code mqT0^TNPcl
start: xt0j9{p
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK $#W6z:
invoke ExitProcess,NULL et}Y4,:
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \'=}kk`
end start Tv)y}
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=/!S
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BEGIN { print "Hello, world!" } nGgc~E$j
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BASIC fqs p1m$
传统版BASIC(例如GWBASIC): Cj\+u\U#
PR6uw
10 PRINT "Hello, world!" i8@e}O I
20 END Y8{1?LO
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或在提示符输入: #$C]0]|
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?"Hello, world!":END |aJ6363f.
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现代版BASIC(例如Quick BASIC): H{zuIN/.1
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Print "Hello, world!" 0BE^qe
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以下的语句在Quick BASIC中同样有效: w=o m7%J@l
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? "Hello,world!" Qnx92
o xu9v/
K05Y;URbd
BCPL Qs X 59d
GET "LIBHDR" ;*H~Yb0
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LET START () BE %GiO1:t
$( ua-|4@YO
WRITES ("Hello, world!*N") yOz Kux8kB
$) Ao0PFY
E9-'!I !
x#mk[SV
Befunge IjAity.Xrq
"!dlrow olleH">v zNJyF;3
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v 8a
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Brainfuck M=_CqK*
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< IOqyqt'
+++++++++++++++.>.+++.------.--------.>+.>. &B7KWvAy
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cs;Gk:
C RUh{^3;~
#include <stdio.h> y36aoKH
7Apbi}")
int main(void) " T=LHj E
{ %'O(Y{$Y.
printf("Hello, world!\n"); x:lf=DlA
return 0; lf#six
} ]+9:i!s
p:%E>K1<
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C++ !
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#include <iostream> @$G
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int main() '#6DI"vJ
{ z#
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std::cout << "Hello, world!" << std::endl; 1bs95Fh9Q
return 0; d^^>3L!h
} Lr&BZM
}C#d;JC
dUSuhT
C++/CLI 5L#M7E
int main() U6PUt'Kk@
{ '|R|7nQAj
System::Console::WriteLine("Hello, world!"); a9Rh
} ~zRd||qv
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-H]O&u3'c
C# (C Sharp) N6'Y
N10
class HelloWorldApp uGWk(qn
{ =&GV\ju
public static void Main() W#\4"'=I
{ 3I(H.u
System.Console.WriteLine("Hello, world!"); sOmYQ{R
} )dcGV$4t[
} *A`^ C
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Qz;"b!
COBOL rE~O}2a#H
IDENTIFICATION DIVISION. 8/v_ uEG
PROGRAM-ID. HELLO-WORLD. 2Y{9Df
!>j-j
ENVIRONMENT DIVISION. SfT ]C~#$N
7lu;lAAP
DATA DIVISION. H;`@SJBf
GvY8O|a
PROCEDURE DIVISION. _`58G#z
DISPLAY "Hello, world!". zV#k
#/$
STOP RUN. St<\qC
5Z{[.&x
Ycm1 _z
Common Lisp Dl6zl6q?
(format t "Hello world!~%") 1|CO>)*D
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YQJ_t@0C
DOS批处理 []NAV
@echo off QH:i)v*
echo "Hello, world!" V,}cDT>
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lM]7@A
Eiffel a*`J]{3G
class HELLO_WORLD 5Jp>2d
M Cz3RZK
creation oT w1w
make O"GzeEY7
feature ZN^Q!v
make is X.Kxio
$o
local w *0T"hK
io:BASIC_IO U*t`hn-xs
do %'
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!!io :tMWy
m
io.put_string("%N Hello, world!") Gf>T{Q`,is
end -- make {S c1!2q
end -- class HELLO_WORLD e^fjla5
SBA;p7^"
3.Qwn.
Erlang m`t7-kiZ
-module(hello). I|hG"i
-export([hello_world/0]). =`")\?z}
BDA\9m^3
hello_world() -> io:fwrite("Hello, World!\n"). @ggM5mm
F6Ixu_s
X$<?:f-
Forth R?k1)n
." Hello, world!" CR <e"2<qVi
XOoND
gi8kYHldH
Fortran }-kb"\X%g
WRITE(*,10) x<].mx
10 FORMAT('Hello, World!') SVJ3!1B,
STOP EC7o 3LoND
END \y=,=;yv
-95`.o
'ga@=;Wj
HTML KMv|;yXYj4
<HTML> Xc.~6nYp
<HEAD> ^,50]uX_
<TITLE> Hello World! </TITLE> uAJC Q)@
</HEAD> Q"\[ICu!,
<BODY> ,}<v:!
<p>Hello World!</p> 2ZnTT{]_m
</BODY> 2w%1\TcB$
</HTML> &Jj?C
&p*N8S8
MTQdyTDHl
HQ9+ p 7sYgz
H r\yj$Gu>(
(jXgJ" m
?tOzhrv
INTERCAL ;2$^=:8
PLEASE DO ,1 <- #13 WWY9U
DO ,1 SUB #1 <- #238 F4@h}T5)
DO ,1 SUB #2 <- #112 phTZUmi
DO ,1 SUB #3 <- #112 G[jCmkK
DO ,1 SUB #4 <- #0 hFKYRZtP.8
DO ,1 SUB #5 <- #64 nBQG.3
DO ,1 SUB #6 <- #238 VFyt9:a
DO ,1 SUB #7 <- #26 }=++Lr4*
DO ,1 SUB #8 <- #248 m{' q(w}
DO ,1 SUB #9 <- #168 }b44^iL$9y
DO ,1 SUB #10 <- #24 I6UZ_H'E
DO ,1 SUB #11 <- #16 e3[N#ryt
DO ,1 SUB #12 <- #158 ^rI&BN@S
DO ,1 SUB #13 <- #52 9yQ[ *
PLEASE READ OUT ,1 b"J(u|Du`
PLEASE GIVE UP \Ew2@dF{O
0tA+11Iu
UOq$88sr
Java UO</4WJ
public class Hello 3)=$BSC%
{ D[<8(~VP
public static void main(String[] args) !j- 7,
{ Fw=-gb_.
System.out.println("Hello, world!"); xi-^_I
} <K)^MLgN
} ")TI,a`
)y8$-"D(it
s+4G`mq>*
JSP 5}1c Np6@
<% rZ^DiFR
out.print("Hello, world!"); ,cS|fG
%> >XA#/K
N3E=t#n
.
a~J.0co
MIXAL sLCL\dWT
TERM EQU 19 the MIX console device number " #JRw
ORIG 1000 start address #T+%$q [:
START OUT MSG(TERM) output data at address MSG iNha<iS+
HLT halt execution .@R{T3=Q
MSG ALF "MIXAL" $g*|h G/{
ALF " HELL" xl
s_g/Q
ALF "O WOR" ,]>Eg6B,u
ALF "LD " nF05p2Mh
END START end of the program gXG1w>
IF uz'
s`&8tP
Nuva FFPO?y$
<..直接输出..> T*z >A
Hello, world! O||M
|
I#m5Tl|#
<..或者..> "= HCP,
:H6Ipa
<. XjWoUnz
// 不带换行 WPLAh_fe
? "Hello, world!" `_<K#AG Ai
V\Rbnvq
// 或者 >0{{loqq
"GgK,d}%
// 带换行 $/6.4"j
?? 'Hello, world!' 3:!+B=woR
.> \6*3&p
'Exj|Y&
u=A&n6Q[Vo
OCaml |nB2X;K5~
let main () = \DpXs[1
print_endline "Hello world!";; 8hGp?Ihu
<kt,aMw[*
(eSa{C\
Pascal m>~%.
(/x
program Hello; cs,%Zk.xjw
begin <$_B J2Z
writeln('Hello, world!'); ]7Tjt A.\q
end. Wn<