“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。 BDm88<]
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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》。 (pT(&/\8
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以下是用不同语言写成的Hello World程序的几个例子: Ere?d~8
Ada o8};e
with Ada.Text_Io; use Ada.Text_Io; 1Es*=zg
procedure Hello is Y0Hq+7x
begin C>Omng1>^
Put_Line ("Hello, world!"); 2xL!PR-
end Hello; :_o] F
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汇编语言 )]c]el@y
LXh@o1
x86 CPU,DOS,TASM KJ0xp hf
MODEL SMALL (^DLCP#*
IDEAL WA]%,6
STACK 100H :Wyn+
F_Z&-+,*3t
DATASEG `N|U"s;
HW DB 'Hello, world!$' nJtEUVMt
7x[LF ^o
CODESEG ( Lok
MOV AX, @data \A'|XdQ
MOV DS, AX
!fQJL
MOV DX, OFFSET HW .6O52E
MOV AH, 09H H )BOSZD
INT 21H ),nCq^Bp
MOV AX, 4C00H iA55yT+
INT 21H )(:+q(m
END h*;g0QBkl
b(PHZCy#
9SRfjS{7
x86 CPU,GNU/Linux,NASM ;mf4U85
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). =_$XP
;Enter this into "hello.asm" then type: dN$ 1$B^k
;"nasm -f elf hello.asm" a"0B?3*r46
;"ld hello.o -o hello" 4
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;"./hello" RLYU\@kK?
18DTv6?QG
section .data ;data section declaration M>*0r<qn
msg db 'Hello World!',0AH E;6Y? vJ
len equ $-msg ;string length ~-XOvKJb
YMc8Q\*B
section .text ;code section declaration X+]L-o6I2
global _start ;entry point (start of execution) rao</jN.9
_start: mov edx,len ;string length ?1GY%-
mov ecx,msg ;string start ^lHb&\X
mov ebx,1 ;file handle: stdout 1fz*SIjG
mov eax,4 ;sys_write -M7K8
int 80h ;kernel system call wF|0n t
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mov ebx,0 ;return value {l&Ltruhz
mov eax,1 ;sys_exit l^DINZU@
int 80h ;kernel system call >.DF"]XM
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Vk MinE
x86 CPU,Windows,MASM32 l,*yEkU
.386 JP{UgcaF
.model flat,stdcall 5SoZ$,a<e
option casemap:none NoFs-GGGh
;Include 文件定义 dO>k5!ge|:
include windows.inc <Vz<{W3t
include user32.inc i0k+l
includelib user32.lib hnp`s%e,
include kernel32.inc XXa(305
includelib kernel32.lib a{<p'_
;数据段 >Y7r\
.data ybo#K
szCaption db 'A MessageBox!',0 YniZ(
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szText db 'Hello,world!',0 |ZS 57c:
;代码段 7%{R#$F
.code ^y:FjQC:
start: T?W[Z_D
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK nqZA|-}
invoke ExitProcess,NULL W3 ^z Ij
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> `d75@0:
end start c5X`_
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AWK .
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BEGIN { print "Hello, world!" } g d z
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BASIC "e~k-\^Y
传统版BASIC(例如GWBASIC): S3SV.C:z>
'I&|1I^
10 PRINT "Hello, world!" ,`;jvY~Ec
20 END ./#e1m?.
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或在提示符输入: uA~YRKer
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?"Hello, world!":END }0$mn)*k
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现代版BASIC(例如Quick BASIC): .
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Print "Hello, world!" BR;QY1
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以下的语句在Quick BASIC中同样有效: Iph3%RaE
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? "Hello,world!" 8O;Vl
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4py(R-8\
BCPL 1 ojhh7<
GET "LIBHDR" 9u?(^(.
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LET START () BE ,!`SY)
$( #e*X0;m
WRITES ("Hello, world!*N") Ejq=*UOP
$) lj)f4zu
vK(I3db!
CoJ55TAW
Befunge ^"1TPd|
"!dlrow olleH">v cFLd)mt/
, 4GVNw!V
^_@ T'8RkDI}-
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]pWP?Ws
Brainfuck &} ,*\Oj
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ?L=A2C\_-
+++++++++++++++.>.+++.------.--------.>+.>. )!cI|tovs
\ EZ+#3u
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C ,*dzJT$k
#include <stdio.h> F+Z2U/'a
9UP:J0 `
int main(void) _vL<h$vD
{ &Cq{
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printf("Hello, world!\n"); .!i0_Rv5x
return 0; ;+
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} ^|aNG`|O
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J/t!-!
C++ }w@gj"\H
#include <iostream> MD<-w|#8IV
1i
u =Y
int main() +3Y!xD?=
{ h'l^g%;
std::cout << "Hello, world!" << std::endl; 84'?um
return 0; O-j$vzHpdY
} {7X#4o0
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=2,0Wo]$
C++/CLI W<NmsG})_g
int main() ,d|vP)SS
{ Tw//!rpG
System::Console::WriteLine("Hello, world!"); L~dC(J)@ZI
} YdI0E
IZ 8y}2
OC_M4{9/
C# (C Sharp) J3G7zu8
class HelloWorldApp _UkmYZ/
{ )r9b:c\
public static void Main() o 7G> y#Y
{ f jI #-
System.Console.WriteLine("Hello, world!"); Wr>(#*r7q
} pCC 7(Ouo
} 9=
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x l0DN{PG
bD<qNqX$
COBOL }E; F)=E
IDENTIFICATION DIVISION. S5_t1wqBJ
PROGRAM-ID. HELLO-WORLD. wVqd$nsY"
:
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ENVIRONMENT DIVISION. bC~~5Cm
Q2/.6O8
DATA DIVISION. ~Fw<eY
] TSg!H
PROCEDURE DIVISION. m_*R.a
DISPLAY "Hello, world!". .#fPw_i
STOP RUN. :[sOKV i
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kX[fy7rVt
Common Lisp We}lx{E
(format t "Hello world!~%") Z^zbWFO]5
?} ( =
=x0No*#|'
DOS批处理 )`8pd 7<.
@echo off F>+2DlA`<e
echo "Hello, world!" 6GYtY>
([ dT!B#aH
EfiU$8y
Eiffel "+|L_iuNQ
class HELLO_WORLD s&'BM~WI
!gH9 ay
creation ~O;y?]U
make hazq#J!
feature Pl+xH%U+?
make is 6:?rlh
local )"`!AerJ
io:BASIC_IO 4:mCXP,x
do |NrrTN?>
!!io <\@1Zz@ms
io.put_string("%N Hello, world!") TfRGA(+#
end -- make ^Y04qeRd
end -- class HELLO_WORLD Ht[{ryTxu
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Erlang 9<s4yZF@x
-module(hello). ~]WVG@-
-export([hello_world/0]). ,P6=~q3k
aMK~1]Cx
hello_world() -> io:fwrite("Hello, World!\n"). V5"HwN+`
dqe7s Zl!
X=~V6m
Forth Ct]A%=cZW
." Hello, world!" CR ?a.+j8pbGg
ZA\/{Fw
7*s8ttX
Fortran R Fko>d
WRITE(*,10) "Xn%at4
10 FORMAT('Hello, World!') 9"sDm}5%
STOP t`|,6qEG
END V U~Dk);Bv
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"0&N}
HTML G'x .NL
<HTML> E\{< ;S
<HEAD> vR>o}%`
<TITLE> Hello World! </TITLE> z`$J_Cj Y
</HEAD> wJG$c-(\0
<BODY> C!%:o/
<p>Hello World!</p> ;sPzOS9
</BODY> #[ -\lU|
</HTML> @5<CXTdF9c
N/~N7MwJj
Zk?
=
HQ9+ QH@>icAb
H .px:e)iW
onte&Ed\
)`HA::
INTERCAL Vhg1/EgUr
PLEASE DO ,1 <- #13 mBk5+KyT
DO ,1 SUB #1 <- #238 .ve *Vp
DO ,1 SUB #2 <- #112 +MUwP(U=w
DO ,1 SUB #3 <- #112 xxa} YIe8
DO ,1 SUB #4 <- #0 O}Le]2'
DO ,1 SUB #5 <- #64 w'ybbv{c
DO ,1 SUB #6 <- #238 =AOWeLk*G
DO ,1 SUB #7 <- #26 Xl%0/o
DO ,1 SUB #8 <- #248 IFuZ]CBz
DO ,1 SUB #9 <- #168 H:S,\D?%2x
DO ,1 SUB #10 <- #24 <@,$hso7:
DO ,1 SUB #11 <- #16 HGDVOJq
DO ,1 SUB #12 <- #158 >SCGK_Cr2
DO ,1 SUB #13 <- #52 +=P@HfVfiq
PLEASE READ OUT ,1 1n%8j*bJq
PLEASE GIVE UP 3qMNl>>
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&35|16z%@
Java 8SmjZpQ?
public class Hello UG[e//m
{ 3071:W
public static void main(String[] args) #DI$Oc
{ v[S-Pi1
System.out.println("Hello, world!"); 'Ud|Ex@A9
} 3/goCg
} >3D7tK(
fCX*R"
;")A{tX2
JSP J7&DR^.Sw
<% Fhj8lVvk
out.print("Hello, world!"); [}o~PN:sT(
%> 5lmO:G1
H\G{3.T.9
jqcz\n d
MIXAL GJQc!cqk
TERM EQU 19 the MIX console device number Yx)o:#2
ORIG 1000 start address I6w~H?ul@*
START OUT MSG(TERM) output data at address MSG B)=~8wsI:Z
HLT halt execution ($!KzxF3
MSG ALF "MIXAL" rVryt<2:@r
ALF " HELL" ZX.TqvK/r
ALF "O WOR" m],Ud\
ALF "LD " %:u[MBe ,
END START end of the program $Ua56Y
i|$z'HK;+
Ax<\jW<
Nuva Z<z;L<tJ 9
<..直接输出..> VOgi7\
Hello, world! OtUrGQP
(Mt5 P
<..或者..> w:ULi3
1B:aC|B
<. O!R"v'
// 不带换行 w2"]Pl
? "Hello, world!" jBtj+TL8
/iM$Tb5
// 或者 :Jxh2
$\\lx_)
// 带换行 {aDFK;qG.
?? 'Hello, world!' 4zc<GL3[
.> `y!/F?o+!
@h?crJ6$
&a)vdlZSE=
OCaml kU*{4G|6
let main () = 0Xl%uF+w
print_endline "Hello world!";; \cySWP[
'fW#7W
Ka-p& Uv1<
Pascal `~F5wh~
program Hello; |:q/Dt@
begin r6.N4eW.L
writeln('Hello, world!'); 4\2V9F{s
end. |!*Xl)
]
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Perl {]/8skov5]
#!/usr/local/bin/perl Zz"}Cz:bX
print "Hello, world!\n"; H7&xLYQ2
>)4YP*qIPb
1(gfdx9|b
PHP mN}7H:,
<?php 1Ix3i9
print("Hello, world!"); W)=%mdxW0
?> Fvl`2W94;
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