“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。 RGxOb
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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》。 9GQTe1[t4
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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
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Ada DdFVOs|
with Ada.Text_Io; use Ada.Text_Io; /_56H?w\
procedure Hello is ;j52a8uE'}
begin t71 0sWh{
Put_Line ("Hello, world!"); 1-b,X]i
end Hello; ho:,~ A;k
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汇编语言 g1}RA@9
koie
x86 CPU,DOS,TASM X'3F79`
MODEL SMALL >%W"u`Q
IDEAL ;aFQP:l/
STACK 100H Rn TPU`
O=+C Kx@
DATASEG :r~? Z6gK
HW DB 'Hello, world!$' hz/5k%%UX
qI'a|p4fn?
CODESEG r2hm`]\8M
MOV AX, @data Su-+~`
"
MOV DS, AX T$q]iSgu
MOV DX, OFFSET HW *k=}g][?
MOV AH, 09H iE&`Fhf?
INT 21H C( r?1ma
MOV AX, 4C00H S5uV\Y/A
INT 21H }SOj3.9{c
END 9PGSr4V1
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x86 CPU,GNU/Linux,NASM ,v^it+Jc'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). QX8N p{g-
;Enter this into "hello.asm" then type: wv*r}{%7g[
;"nasm -f elf hello.asm" c8u&ev.U
;"ld hello.o -o hello" \C>I6{
;"./hello" w.V8-9{
D)mqe-%1
section .data ;data section declaration 1 8&^k|
msg db 'Hello World!',0AH S]9xqiJW
len equ $-msg ;string length 7zNyH(.
@ 8SYV}0H
section .text ;code section declaration <2R=!n@b\
global _start ;entry point (start of execution) 5&VLq
_start: mov edx,len ;string length q_I ''L
mov ecx,msg ;string start R!- RSkB
mov ebx,1 ;file handle: stdout <4VUzgX2
mov eax,4 ;sys_write 3 =S.-
int 80h ;kernel system call f:=?"MX7
$A-b-`X
mov ebx,0 ;return value rA_e3L@v#[
mov eax,1 ;sys_exit u''(;U[
int 80h ;kernel system call |m?0h.O,
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uEk$Y=p7!
x86 CPU,Windows,MASM32 fdPg{3x*k
.386 iveWau292
.model flat,stdcall z
|t0mS$
option casemap:none T}zOM%]]
;Include 文件定义 ++FMkeHZ
include windows.inc gE%- Pf~
include user32.inc =*I>MgCJ
includelib user32.lib dvUJk<;w
include kernel32.inc 0lW}l9}'-
includelib kernel32.lib udw5A*Ls
;数据段 .lj\H
.data v/(< fI^
szCaption db 'A MessageBox!',0 bhFzu[B
szText db 'Hello,world!',0 ~s
!+9\Fi
;代码段 7?F0~[eGG
.code O! ;!amvz
start: 44cyD _(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK /y1,w JI
invoke ExitProcess,NULL ;Cv x48
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> (h2bxfV~+
end start k%.IIVRx
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6Si z9
AWK wG-X833\(
BEGIN { print "Hello, world!" } qQ^]z8g6P
)|*HkdF`
( vgoG5
BASIC "tm2YUG},s
传统版BASIC(例如GWBASIC): a2sN$k
I>fEwMk~
10 PRINT "Hello, world!" /}(w{6C
20 END s,lrw~17
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或在提示符输入: vrQ/Yf:\B
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?"Hello, world!":END X 5pp8~
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现代版BASIC(例如Quick BASIC): c:4i&|n
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Print "Hello, world!" s [@II]
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以下的语句在Quick BASIC中同样有效: #2/k^N4r
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? "Hello,world!" 3)p#}_u{
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P^T]U bv"
BCPL 0LN"azhz
GET "LIBHDR" eG =Hyc
w%KU@$
LET START () BE auK*\Wjm?
$( p^<*v8,~7
WRITES ("Hello, world!*N") [y&yy|*\
$) R:fERj<s
<$qe2FtUq
Am{Vtl)i
Befunge \mbm$E+X
"!dlrow olleH">v 9jBP|I{xI
, MV'q_{J
^_@ V*Ta[)E
ViKN|W>T
. =yF
Brainfuck
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< DQui7dr)l
+++++++++++++++.>.+++.------.--------.>+.>. `O/1aW1
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C o9*}>J<+RQ
#include <stdio.h> {(Jbgsxm
1Tm,#o
int main(void) 1wAD_PI|BH
{ bvzNur_
printf("Hello, world!\n"); |KY6IGcqV
return 0; }M7{~ov#s
} v P;
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C++ UNY
O
P{
#include <iostream> "Te[R%aP
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int main() wGy`0c]v?
{ N5_`
std::cout << "Hello, world!" << std::endl; nM#/uuRl|
return 0; @ @uKOFA?
} O2N7qV3U,
\D67J239E
^`iqa-1
C++/CLI ~xPU#m<
int main() <<WqL?8W
{ HD%n'@E
System::Console::WriteLine("Hello, world!"); yrvV<}
} t9l]ie{"o.
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9t8NK{
C# (C Sharp) 88uoA6Y8h
class HelloWorldApp BcXPgM!Xqz
{ ExKyjWAJ
public static void Main() |-l9 Z
{ 1L;3e@G
System.Console.WriteLine("Hello, world!"); t4d^DZDh!
} 3kzO
VZ
} GD-L0kw5
{Qba`lOkq
GAP,$xAaW
COBOL 3-Bz5sj9
IDENTIFICATION DIVISION. + *)Kyk
PROGRAM-ID. HELLO-WORLD. X*w7q7\8-:
joA>-k04
ENVIRONMENT DIVISION. YQ|o0>
:P8X?C63W]
DATA DIVISION. g|Tkl
9y}/ G
PROCEDURE DIVISION. =Jax T90x
DISPLAY "Hello, world!". ]y9u5H^
STOP RUN. 'ws@I?!r
7 I/a
1<G, 0Lt
Common Lisp S'(IG m4
(format t "Hello world!~%") {ui{Y c
bn:74,GeyK
k
1lK`p
DOS批处理 ntxaFVD
@echo off :z-?L0C=0
echo "Hello, world!"
CH$K_\
rL,kDSLs
"cwvx8un
Eiffel BU<Qp$&
class HELLO_WORLD z2iWr
14`S9SL{V
creation #Xk/<It
make (qw;-A
W8
feature 6!@p$ pm)a
make is Z|B`n
SzH
local *|OUd7P:hU
io:BASIC_IO pS "A{k)i
do rRXF@
!!io [:/mjO K
io.put_string("%N Hello, world!") FI @kE19
end -- make ; EsfHCi)
end -- class HELLO_WORLD I@kMM12>c
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79 \SbB
Erlang Tdxc%'l
-module(hello). p#N2K{E
-export([hello_world/0]). )0\D1IFJ
MSb0J `
hello_world() -> io:fwrite("Hello, World!\n"). B$G9#G6pZ
yPf,GB"
G%dzJpC(
Forth # ';b>J
." Hello, world!" CR +.a->SZ5"
ybcCq]cgt
q4niA
Fortran L4<=,}KS
WRITE(*,10) =.IAd<C
10 FORMAT('Hello, World!') BSY7un+`:
STOP {A\y4D@
END VO<P9g$UD
fS4 Ru
Me-H'Mp~
HTML yW;]J87*
<HTML> $*7AG
<HEAD> -l<[CI
<TITLE> Hello World! </TITLE> "4CO^ B
</HEAD> 8ZNwo
<BODY> /<\do 1
<p>Hello World!</p> H6Kt^s<6xu
</BODY> J6J;
!~>_
</HTML> O/ZyWT
{WuUzq`
t7/a5x
HQ9+ m</nOf+C
H 8'0KHn{#
Ekz)Nh)vGR
Bz6Zy)&sAL
INTERCAL XtIY8wsP
PLEASE DO ,1 <- #13 ^oZD44$
DO ,1 SUB #1 <- #238 KCfcEz
DO ,1 SUB #2 <- #112 $B@K
DO ,1 SUB #3 <- #112 gX]'RBTb
DO ,1 SUB #4 <- #0
Lu~M=Fh
DO ,1 SUB #5 <- #64 SA.,Q~_T7
DO ,1 SUB #6 <- #238 G=>LW1E|
DO ,1 SUB #7 <- #26 h|.*V$3
DO ,1 SUB #8 <- #248 =mh)b]].4\
DO ,1 SUB #9 <- #168 `BY&&Bv#?
DO ,1 SUB #10 <- #24 Mh5 =]O+
DO ,1 SUB #11 <- #16 zqb3<WP"
DO ,1 SUB #12 <- #158 3qq6X?y*
DO ,1 SUB #13 <- #52 K[i|OZWu
PLEASE READ OUT ,1 u/4|Akui
PLEASE GIVE UP |79n
1;+\?
' q{|p+
|I=\+P}s
Java }t.VH:02y
public class Hello -_~T;cj6
{ df!n.&\y!
public static void main(String[] args) @W*Zrc1NF
{ 30$Q5]T
System.out.println("Hello, world!"); /,2${$c!
} #zc{N"!
} !_=3Dz
cG I^IPI
yX;v
JSP Y7
`i~K;
<% j%OnLTZ
out.print("Hello, world!"); LVp*YOq7
%> do(komP<\
p;m2RHYF
1A b=1g{
MIXAL zE\@x+k.
TERM EQU 19 the MIX console device number :]oR x
ORIG 1000 start address |lhVk\X
START OUT MSG(TERM) output data at address MSG = A;B-_c
HLT halt execution 1f^4J~{
MSG ALF "MIXAL" ?Em*yc@WD
ALF " HELL" uM<6][^`
ALF "O WOR" pu +"bq
ALF "LD " ;n,@[v
END START end of the program 0cm+:
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Nuva -6KGQc}U
<..直接输出..> xW;-=Q
Hello, world! 6{r^3Hz
a}+7MEUmZ/
<..或者..> EK6fd#J?1
-S7rOq2Li
<. 9\]%N;;Lo
// 不带换行 !`G7X
? "Hello, world!" Y(4#b`k3
\=yx~c_$L
// 或者 Tv&-n
Q-!a;/
// 带换行 ,afh]#
?? 'Hello, world!' Dm1;mR S+
.> >~5>)yN_a1
1YA_`_@w
_tg&_P+kV
OCaml r2T-= XWB
let main () = ~ (xIG
print_endline "Hello world!";; 9 T4x1{mO
(N U*PQY6
L!7*U.+
Pascal Y)>GwFK$
program Hello; s fxQ
begin OgNt"Vg
writeln('Hello, world!'); kne{Tp
end. 63d'
fgVp
A+T!DnVof
j5ZeYcQ-
Perl *f:^6h
#!/usr/local/bin/perl M$z.S0"
print "Hello, world!\n"; zxtx~XO
<JKRdIx&1
hbhh
m
PHP 3u7N/OQ(
<?php aD,sx#g0
print("Hello, world!"); rS>JzbWa
?> xT I&X9P
lkK+Fm
^o]ZDc
Pike @<e+E"6
#!/usr/local/bin/pike 15_OtK
int main() lvIKL!;H
{ K*Zf^g
m
write("Hello, world!\n"); "#2z
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return 0; a3
<D1"
} \~1M\gZP
A1:<-TF6^p
imAsE;:
PL/I \X5{>nNh
Test: procedure options(main); 3hr&