“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。 $?FS00p*|X
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 I?_E,.)[ I
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以下是用不同语言写成的Hello World程序的几个例子: CY*ngi &
Ada EKZ$Q4YE
with Ada.Text_Io; use Ada.Text_Io; kCima/+_
procedure Hello is 8G 0
begin DE*MdfP0
Put_Line ("Hello, world!"); nE/=:{~Ws
end Hello; uy/y wm/?=
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汇编语言 :8p&#M
BRQ"A,
x86 CPU,DOS,TASM n?'d|h
MODEL SMALL &EAk
z
IDEAL [096CK
STACK 100H ]>tq|R78
,f}h}
DATASEG H4M{_2DO
HW DB 'Hello, world!$' NH'1rt(w
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CODESEG BG'6;64kx6
MOV AX, @data puFXPw.3
MOV DS, AX +$>N]1
MOV DX, OFFSET HW G1}~.%J
MOV AH, 09H w[
Axs8N'
INT 21H n!GWqle
MOV AX, 4C00H 8@E8!w&~
INT 21H *;<e
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END 2q)T y9
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x86 CPU,GNU/Linux,NASM yZq?B
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Pj'62[5z
;Enter this into "hello.asm" then type: 's)fO#
;"nasm -f elf hello.asm" G49Ng|qn
;"ld hello.o -o hello" )T>8XCL\}
;"./hello" 82lr4
\X&]FZ(*
section .data ;data section declaration <5dH *K
msg db 'Hello World!',0AH x+4vss
len equ $-msg ;string length iJ}2"i7M
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section .text ;code section declaration Z.!g9fi8>
global _start ;entry point (start of execution) egfi;8]E
_start: mov edx,len ;string length brb[})}
mov ecx,msg ;string start ya:sW5fk
mov ebx,1 ;file handle: stdout f%c06Un=
mov eax,4 ;sys_write "X`RQ6~]>
int 80h ;kernel system call f2NA=%\
vCj4;P g
mov ebx,0 ;return value Hw Z^D=A
mov eax,1 ;sys_exit 0z/h+,
int 80h ;kernel system call g;8M<`qvf
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Zp`~}LV{
x86 CPU,Windows,MASM32 My. dD'C
.386 C1 W>/?XC
.model flat,stdcall d7E7f
option casemap:none !~WZ_z
;Include 文件定义 *2`:VFEV
include windows.inc ^%;" [r
include user32.inc [q'eENG
includelib user32.lib 5? Wg%@
include kernel32.inc cST\~SUm
includelib kernel32.lib >;,gGH
;数据段 $57\u/(
.data A^-iHm
szCaption db 'A MessageBox!',0 W+8^P(
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szText db 'Hello,world!',0 8/Mx5~ R
;代码段 ~P/]:=
.code R;r|cep
start: kfXS_\@iW1
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK aVP5%
invoke ExitProcess,NULL Vc| NL^
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> D3y>iQd
end start T8U[xu.>
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AWK Q\|18wkW
BEGIN { print "Hello, world!" } 6J\q`q(W(
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BASIC )S2iIi;Bq
传统版BASIC(例如GWBASIC): mf}\s]_c
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10 PRINT "Hello, world!" I] jX7.fx
20 END "J& (:(:
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或在提示符输入: &3I$8v|!?
usy,V"{
?"Hello, world!":END UeA2c_
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现代版BASIC(例如Quick BASIC): gGI8t@t:
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Print "Hello, world!" uoHqL IpQ
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以下的语句在Quick BASIC中同样有效: 9\AS@SH{^T
wlr Ign%
? "Hello,world!" 7H%_sw5S.
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BCPL Wab.|\c
GET "LIBHDR" [t{](-
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LET START () BE VD/&%O8n
$( 9<l-NU9 _
WRITES ("Hello, world!*N") 088C|
$) i
j/o;_
Aq"PG}Ic
3za`>bUN
Befunge j7}lF?cJ2
"!dlrow olleH">v T`?n,'!(
, @^!\d#/M
^_@ \!<"7=(J{4
b/nOdFO@
tq&Yek>C
Brainfuck \45(#H<$
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< >ZeEX,N
+++++++++++++++.>.+++.------.--------.>+.>. y@3kU*-1
akC>s8tqlA
)Oiev u_"|
C I8k
#include <stdio.h> \i0-o8q@I
A*F9\mjI5
int main(void) E~RV1)
{ Sph*1c(R
printf("Hello, world!\n"); *Tp]h 0
return 0; O:JPJ"!
} (B:uc_+
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C++ +i=p5d5
#include <iostream> 59i]
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int main() JT)k
{ g\&2s,
std::cout << "Hello, world!" << std::endl; pds*2p)2
return 0; :tLbFW[
} <Oa9oM},d
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r?^"65=
C++/CLI gI{ =0
int main() <HF-2?`
{ bMmra.x4L
System::Console::WriteLine("Hello, world!"); 9|=nV|R'6
} B\[-fq
3gc"_C\$
%ek"!A
C# (C Sharp) h<Wg 3o
class HelloWorldApp ,QvYTJ{
{ F\LsI;G
public static void Main() dIJGB==
{ H&bh<KPMh
System.Console.WriteLine("Hello, world!"); Dtt-|_EMS
} X*O9JGh
} N09KVz2Q
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j#3m|dQ
COBOL 7Z0/(V.-
IDENTIFICATION DIVISION. }g{_AiP
rv
PROGRAM-ID. HELLO-WORLD. S+ebO/$>
b_vTGl1_6
ENVIRONMENT DIVISION. 3dG4pl~
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DATA DIVISION. bS rZ{l
k[9A,N^lZB
PROCEDURE DIVISION. 2-mQt_
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DISPLAY "Hello, world!". #
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STOP RUN. J3B.-XJ+n
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gS$A
Common Lisp 4AHL3@x
(format t "Hello world!~%") <%K UdkzEP
? )_7U
^ ulps**e
DOS批处理 t`u!]DHv
@echo off 7'OPjtM
echo "Hello, world!" H$tb;:
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N9]xJgTze
Eiffel 4ht\&2&:
class HELLO_WORLD O]qPmEj
/9_#U#vhY
creation 2B` 8eb
make +< KNY
feature "}zda*z8
make is &fSTR-8ev#
local xl2g0?
io:BASIC_IO LgHJo-+>
do m r4b
!!io "'A"U
io.put_string("%N Hello, world!") |scUo~
end -- make g.a| c\WH
end -- class HELLO_WORLD %
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vg(K$o{BT
Erlang JJ5C}`(
-module(hello). frqJN
-export([hello_world/0]). z*LiweR-
hZN<Yd8:
hello_world() -> io:fwrite("Hello, World!\n"). io4aYB\
p)/
p!d[T/
' qy#)F
Forth 7lU.Nit
." Hello, world!" CR o.^y1mH'
2U9&l1P=
`o
si"o9
Fortran 8i:[:Z
WRITE(*,10) a)9rs\Is{
10 FORMAT('Hello, World!') 16$y`~c-z
STOP &p"(-
END r7I
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m:{tgcE
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HTML (F8AL6
<HTML> n93zD*;5
<HEAD> 6[?}6gQ
<TITLE> Hello World! </TITLE> sX:lE^)-z
</HEAD> YKs4{?vw
<BODY> 1V%'.l9
<p>Hello World!</p> sKfXg`0
</BODY> wFL3&*
</HTML> cOku1g8
70Ka!
3ATjsOL
HQ9+ "s]y!BLk
H >&Fa(o;*
NHiq^ojk
jvs[ /
INTERCAL 6c<ezEJ
PLEASE DO ,1 <- #13 Q6^x8
DO ,1 SUB #1 <- #238 FC}oL"kk
DO ,1 SUB #2 <- #112 >n!ni(
DO ,1 SUB #3 <- #112 Nl*i5 io
DO ,1 SUB #4 <- #0 r(`nt-o@
DO ,1 SUB #5 <- #64 7& 6Y
DO ,1 SUB #6 <- #238 cwynd=^nC
DO ,1 SUB #7 <- #26 %EI<@Ps8c
DO ,1 SUB #8 <- #248 DU{bonR`
DO ,1 SUB #9 <- #168 j>'B[
DO ,1 SUB #10 <- #24 ZnXejpj)D
DO ,1 SUB #11 <- #16 N[k<@Q?*a
DO ,1 SUB #12 <- #158 vv/J 5#^,\
DO ,1 SUB #13 <- #52 7co`Zw4}g
PLEASE READ OUT ,1 d^84jf.U
PLEASE GIVE UP <k]qH-v4
8(xw?|D7
i2`0|8mw'
Java >o[|"oLO
public class Hello L2|aHI1'l
{ 0*7*RX
public static void main(String[] args) }*kJ-q&0
{ LfX0Z=<
System.out.println("Hello, world!"); .ECHx Dp
} !R:y'Y%j
} 2u:4$x8
-<W2PY<
m0( E kK
JSP #Lka+l;L7
<% dr})-R
out.print("Hello, world!"); o&-L0]i|
%> T-8J
<NB41/
xm H-!Da
MIXAL /EFq#+6
TERM EQU 19 the MIX console device number @@}`hii
ORIG 1000 start address zvf3b!}
START OUT MSG(TERM) output data at address MSG Dip*}8$o(w
HLT halt execution $a.u05
MSG ALF "MIXAL" _CdROo6I
ALF " HELL" U9ZbVjqv@
ALF "O WOR" a8s4T$
ALF "LD " b!a
%YLL
END START end of the program mG(N:n%*K
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T1NH eH>
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<..直接输出..> 1d v=xe.
Hello, world! ')o0O9/;
3Gd0E;3sk~
<..或者..> I@./${o
>XE`h9
<. ,w`~K:b.
// 不带换行 CC8k&u,
? "Hello, world!" aRwnRii
f7+Cz>R
// 或者 (9GbG"
./w{L"E
// 带换行 R6@uM<