“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。 i+in?!@G:
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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》。 oNw=O>v
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以下是用不同语言写成的Hello World程序的几个例子: .0RQbc9
Ada W)J5[p?
with Ada.Text_Io; use Ada.Text_Io; nxBP@Td
procedure Hello is [tJn!cMs
begin u-s*k*VHoc
Put_Line ("Hello, world!"); ,}@4@ >?K
end Hello; zVf79UrK
On~KTt3Mp
rc<Ix
汇编语言 d4ld-y
tKcC{
x86 CPU,DOS,TASM G4P*U3&p
MODEL SMALL \'[tfSB
IDEAL Ii5U)"
STACK 100H [7HBn
1 I.P7_/
DATASEG (ER9.k2
HW DB 'Hello, world!$' Wa.xm_4s2
8Dtpb7\o
CODESEG 53ZbtEwhwr
MOV AX, @data <82&F
MOV DS, AX +WR?<*_
MOV DX, OFFSET HW oQ/T5cOj
MOV AH, 09H oIx|)[
INT 21H >`a^E1)
MOV AX, 4C00H Vp~ cN
INT 21H ,dK)I1"C
END @RszPH1B
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pjTJZhT2 I
x86 CPU,GNU/Linux,NASM dQ-shfTr]
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). j<~T:Tk
;Enter this into "hello.asm" then type: v=hn# U
;"nasm -f elf hello.asm" g[t paQ
;"ld hello.o -o hello" R) dP=W*
;"./hello" r)Lm| S
.I_<\h7
section .data ;data section declaration 5p}j{f
msg db 'Hello World!',0AH _>;MQ)Km~
len equ $-msg ;string length 1 hFh F^
|ka/5o
section .text ;code section declaration 3RGmmX"?G
global _start ;entry point (start of execution) `{h)-Y``
_start: mov edx,len ;string length dR< d7
mov ecx,msg ;string start |39,n~"o&
mov ebx,1 ;file handle: stdout -P|claO0
mov eax,4 ;sys_write W^xO/xu1/
int 80h ;kernel system call [xrsa!$
^xNzppz`]C
mov ebx,0 ;return value 3h=kn@I
mov eax,1 ;sys_exit 6)?u8K5%r
int 80h ;kernel system call Jq(;BJ90R
5Rs#{9YE
N[\J#x!U
x86 CPU,Windows,MASM32 czu9a"M>X
.386 SpU|Q1Q/h
.model flat,stdcall S2Ez}*plp
option casemap:none ,.V<rDwN&
;Include 文件定义 ] dJ"_
include windows.inc tA< UkPT
include user32.inc kqj)&0|X
includelib user32.lib +_pfBJ_$%
include kernel32.inc XR7v\rd
includelib kernel32.lib rFzj\%xa[
;数据段 Ly^bP>2i
.data )D/,QWk
szCaption db 'A MessageBox!',0 52Lp_M
szText db 'Hello,world!',0 %Gyn.9\
;代码段 & C)1(
.code ,lvG5B\0
start: %dW;P[0
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK uQx/o^
invoke ExitProcess,NULL B|"i`{>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Keo<#Cc?
end start hF@%k
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=fnBE`Uc
AWK n
YUFRV$
BEGIN { print "Hello, world!" } aN07\
>2pxl(i
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BASIC %]0?vw:;j
传统版BASIC(例如GWBASIC): `|Di?4+6%
#|Lsi`]+
10 PRINT "Hello, world!" j[A(@w"
20 END ]4[%Sv6]G
2#^g] o-N
或在提示符输入: _z BfNz9D
Q
Kr/
?"Hello, world!":END h0k?(O
Cx/J_Ro#
现代版BASIC(例如Quick BASIC): R?:Q=7K
c;X,-Q9
Print "Hello, world!" (2>q
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以下的语句在Quick BASIC中同样有效: &QfEDDJ
jxkQ #Y
? "Hello,world!" &uO-h
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9m2FH~
BCPL w*/@|r39
GET "LIBHDR" E%D .a=UX,
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LET START () BE 0ElEaH1z
$( -`\^_nVC
WRITES ("Hello, world!*N") G93V=Bk=
$) YQHpW>z
a5ZXrWv
?uL-qsU
Befunge x X3I`
"!dlrow olleH">v Q[NoFZ
V!
, Ym\<@[3+!
^_@ !\1)?&y9j
2[pOGc$
]*k ~jY,
Brainfuck ^ }5KM87
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< u4xtlGt5
+++++++++++++++.>.+++.------.--------.>+.>. yBs-bp"-
obF|;fwPnR
{X?1}5ry
C l#^?sbG
#include <stdio.h> F4T!&E%6
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int main(void) Km=
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{ )b]wpEFl
printf("Hello, world!\n"); 8g_kZ^<[
return 0; g.`Ntsi$wI
} sBI/`dGZV
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C++ svEe@Kt`
#include <iostream> dz/@]a
1DAU*^-
int main() LB]3-FsU+
{ K O\HH
std::cout << "Hello, world!" << std::endl; l"dXL"h
return 0; c\rP
-"C
} }UGSE2^1
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C++/CLI lv!j
int main() T>(X`(
{ v8 =#1YB;
System::Console::WriteLine("Hello, world!"); ,GVX1B?
} l%mp49<
xL.m<XDL
#Ox@[Z1I
C# (C Sharp) r7_%t_O|IL
class HelloWorldApp $X Uck[
{ \Q}Y"oq
public static void Main() U.~G{H`G,u
{ s
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System.Console.WriteLine("Hello, world!"); u5rvrn ]
} ZaY|v-
} <h#W*a
l(Hz9
H"w;~;h
COBOL ;Qt/(/
IDENTIFICATION DIVISION. Oj%5FUP~[%
PROGRAM-ID. HELLO-WORLD. jGkDD8K [
x5PM]~"p
ENVIRONMENT DIVISION. s92ol0`
^}vf
DATA DIVISION. @UdF6:T
q+8de_"]
PROCEDURE DIVISION. AHuIA{AdUR
DISPLAY "Hello, world!". *74/I>i
STOP RUN. 19O
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;J+iwS*Z
Common Lisp F`eE*&
(format t "Hello world!~%") *^G,
i; ]0>g4
MYVVI1A
DOS批处理 *u|1Z%XO
@echo off PPG+~.7
echo "Hello, world!" |n;);T(
a;;
Es
9\Ff z&
Eiffel ~QUNR?h
class HELLO_WORLD 4*f+np
L{IMZ+IB2|
creation 6l4=
make YGQ/zB^Pj
feature Io
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make is <uFj5.
local g^|R;s{
io:BASIC_IO v8C( $<3%
do /=za
m3kd
!!io $u, 6x~>
io.put_string("%N Hello, world!") Ici4y*`M
end -- make |/xA5_-N
end -- class HELLO_WORLD ~};q/-[r
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Erlang G,<d;:
-module(hello). T3=h7a %=
-export([hello_world/0]). !9r%d8!z
H2[0@|<<
hello_world() -> io:fwrite("Hello, World!\n"). fH9"sBiO
Ex]Ku
:'q$emtY
Forth 4/*@cW
." Hello, world!" CR 0'A"]6
|[#Qk 4Ttf
OUwnVAZZ6
Fortran [+A]E,pv]1
WRITE(*,10) WB'1_a
10 FORMAT('Hello, World!') {=d}04i)E"
STOP x.pg3mVd>
END J1gnR
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3jW&S
HTML Hq>hnCT
<HTML> c]U+6JH
<HEAD> Jh%SenP_oP
<TITLE> Hello World! </TITLE> 9o?\*{'KT
</HEAD> pQ^V<6z}
<BODY> RRQv<x
<p>Hello World!</p> ->IZZ5G<
</BODY> i-wWbZ-
</HTML> ;C1#[U1Uy
T)q
Uf
H
^gyI-S(;
HQ9+ BaP'y8dVN
H N5K2Hv<"
K3=0D!D q
{!?M!/d
INTERCAL F3o"ETle
PLEASE DO ,1 <- #13 ~9k E.
DO ,1 SUB #1 <- #238 ^ ~1QA
DO ,1 SUB #2 <- #112 s%vy^x29
DO ,1 SUB #3 <- #112 ui`EODhA(
DO ,1 SUB #4 <- #0 "D4% A!i
DO ,1 SUB #5 <- #64 o4yl3o
DO ,1 SUB #6 <- #238 x7gd6"10^
DO ,1 SUB #7 <- #26 EAWBgOO8iC
DO ,1 SUB #8 <- #248 %}~(%@qB>+
DO ,1 SUB #9 <- #168 |9FrVO$M
DO ,1 SUB #10 <- #24 ?A .ah
DO ,1 SUB #11 <- #16 %c]N-
DO ,1 SUB #12 <- #158 Dz2Z
(EXI~
DO ,1 SUB #13 <- #52 }Cfl|t<5f
PLEASE READ OUT ,1 |-*50j l
PLEASE GIVE UP S{MB$JA
U%BtBPL
PMbq5
Java LN$T.r+
public class Hello 74
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{ M5:*aCN6P
public static void main(String[] args) R@ Gll60
{ H!"TS-s`
System.out.println("Hello, world!"); k}}'fA
} CsT&}-C
}
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f2Xn !]o
@6R6.i5d
JSP p9\*n5{
<% IW@phKz
out.print("Hello, world!"); {w"Cr0F,
%> }$uwAevP{y
`0_
Y| 4KB
G[_Z|Xi1
MIXAL OfA+|xT&
TERM EQU 19 the MIX console device number x\:KfYr4Y;
ORIG 1000 start address br k*;
START OUT MSG(TERM) output data at address MSG +`mI\+y,
HLT halt execution <rui\/4NJ
MSG ALF "MIXAL" :w|=o9J
ALF " HELL" G^VOA4
ALF "O WOR" bF,.6iKI
ALF "LD " F9las#\J
END START end of the program -U9C{q?h
#k>A,
qJonzFp7
Nuva # SJJ@SM
<..直接输出..> W
9}xfy09
Hello, world! BKE ?o^03
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<..或者..> rL+.3ZO):P
[C;Neslo
<. IBu\Sh-
// 不带换行 Pn@DHYP
? "Hello, world!" cmCD}Skk
SG0PQ
// 或者 t7V7 TL!5'
(64es)B}"
// 带换行 {5%d#|?
?? 'Hello, world!' =_@) KWeX$
.> RDy&i
mtE+}b@(!&
BE~-0g$W
OCaml _]D
6m2R
let main () = !
jDopE0L
print_endline "Hello world!";; Z8Vof~
n6Z!~W8
bt.3#aj
Pascal N@!PhP
program Hello; Ix@B*Xz:`
begin <X& fs*x&
writeln('Hello, world!'); vMJ(Ll7/
end. oaILh
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Y?
6zNWDUf
Perl Y"s8j=1m
#!/usr/local/bin/perl Pq(LW(
print "Hello, world!\n"; T
7qHw!)
gLZJQubz
6
anfnqa8
PHP #&L7FBJ"*v
<?php \\Q){\S
print("Hello, world!"); 3=Rk(%:;
?> 5e7\tBab
Q%J,:J
= iDd{$
Pike cc}#-HKR[
#!/usr/local/bin/pike 9zCuVUcd$.
int main() 1Qz@
{ G^dzE/:
write("Hello, world!\n"); Z
d@B6R
return 0; E?BF8t_fTE
} hy$VG%b;#
f4+wP/n&
m^TN6/])
PL/I ObS#aRq
Test: procedure options(main); Odh r=Hs
declare My_String char(20) varying initialize('Hello, world!'); _RZ"WA^[
put skip list(My_String); Iu >4+6
end Test; co^h2b
zzW$F)X
aU[!*n 4Ux
Prolog rwgj]
goal ^L7!lzyo
write("hello,world!"). &1`Y&x:p
H/;AlN|!
<$25kb R5K
Python JV'aqnb.8\
#!/usr/local/bin/python j*4:4B%
print "Hello, world!" 5tLb
o
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=#<bB)59
REXX X{ 6a
say "Hello, world!" BB(v,W
$4)L~g|
r=AA
/n<
Ruby hk
S:_e=
#!/usr/bin/ruby UTN[!0[
print "Hello, world!\n" .P?n<n#
2Yd@V}
[cl+AV "
Scheme <63TN`B
(display "Hello, world!") aD_7^8>
(newline) a1%}Ee
8IBr#+0
@v&