“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。 !GjQPAW
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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》。 :1QI8%L'$i
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以下是用不同语言写成的Hello World程序的几个例子: XJ;57n-?
Ada l
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with Ada.Text_Io; use Ada.Text_Io; ,q`\\d
procedure Hello is EeE7#$l
begin JX;<F~{.
Put_Line ("Hello, world!"); AlaW=leTe
end Hello; BA:VPTZq
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汇编语言 Q~
w|#
YoNDf39
x86 CPU,DOS,TASM 6Pl<'3&
MODEL SMALL /hR&8 `\\
IDEAL !c
Hum
STACK 100H +Mb.:_7'
D%pF;XY
DATASEG L~OvY
HW DB 'Hello, world!$' eu-*?]&Di
By!o3}~g
CODESEG 97*p+T<yp
MOV AX, @data F@KGj|
MOV DS, AX rglXs
MOV DX, OFFSET HW -uG+BraI
MOV AH, 09H \!ZTL1b8t
INT 21H 1.GQau~
MOV AX, 4C00H sY&IquK^
INT 21H n b?lTX~
END BX7kO0j
X&`t{Id?6
e X|m
x86 CPU,GNU/Linux,NASM UB@+ck
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +I|vzz`ZVr
;Enter this into "hello.asm" then type: EV%gF
;"nasm -f elf hello.asm" ^6V[=!& H
;"ld hello.o -o hello" FTUv IbT
;"./hello" /(*q}R3Kfo
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section .data ;data section declaration ^hM4j{|&M
msg db 'Hello World!',0AH kdeWip6Y
len equ $-msg ;string length
(uE!+2C
]{@-HTt
section .text ;code section declaration aEeodA<(
global _start ;entry point (start of execution)
ZBp/sm
_start: mov edx,len ;string length hHnYtq
mov ecx,msg ;string start 9W2Vo [(
mov ebx,1 ;file handle: stdout ]N?kG`[
mov eax,4 ;sys_write HIZe0%WPw
int 80h ;kernel system call eD6fpe\(
vA8nvoi
mov ebx,0 ;return value `d}2O%P
mov eax,1 ;sys_exit %>{0yEC
int 80h ;kernel system call E:nF$#<'N
/a4{?? #e
1mG-}
x86 CPU,Windows,MASM32 t'ql[
.386 Ad_hKO
.model flat,stdcall }o`76rDN
option casemap:none 4|?;TE5
;Include 文件定义 U>N1Od4vTO
include windows.inc 2BwO!Y[
include user32.inc wnC81$1l~
includelib user32.lib S<Xf>-8w
include kernel32.inc Lp9E:D->
includelib kernel32.lib S"H2 7
;数据段 KbeC"mi
.data DB,J3bm
szCaption db 'A MessageBox!',0
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szText db 'Hello,world!',0 . $vK&k
;代码段 _oeS Uzq.
.code E7hY8#G
start: 61U09s%\0
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK WH^%:4
invoke ExitProcess,NULL =T7.~W
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> {)sdiE
end start tKXIk9e
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1$h,m63)
AWK Iu=(qU
BEGIN { print "Hello, world!" } c-sfg>0 ^
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ZbKg~jdF
BASIC "3J}b?u_[
传统版BASIC(例如GWBASIC): 4 #Jg9o
5|)W.*Q
10 PRINT "Hello, world!" "" EQE>d
20 END 2GG2jky{/
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或在提示符输入: 8 LCb+^
.T`%tJ-Em
?"Hello, world!":END )boE/4
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现代版BASIC(例如Quick BASIC): gjlx~.0d
apn*,7ps65
Print "Hello, world!" 7zj{wp!
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以下的语句在Quick BASIC中同样有效: 6!bsM"F
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? "Hello,world!" m]&SN z=
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*m (=V1"
BCPL dc'Y`e
GET "LIBHDR" cWm$;`Q#\
mR)wX 6
LET START () BE |uJ%5y#
$( cZ3v=ke^
WRITES ("Hello, world!*N") "r2 r
$) w32y3~
W%w~ah|/]
TcoB,Kdce
Befunge 2`-Bs
"!dlrow olleH">v iURe( [@
, !<h)w#>en
^_@ Uw:"n]G]D?
'N(R_q6MW
MqMQtU9w
Brainfuck $pz/?>!
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< [N'h%1]\
+++++++++++++++.>.+++.------.--------.>+.>. R@2X3s:
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cH)";]k*-
C ]_$[8#kg
#include <stdio.h> `H+lPM66
7[wPn`v2
int main(void) Yr|4Fl~U
{ ss-D(K"
printf("Hello, world!\n"); 2t,zLwBdnJ
return 0; %jM,W}2
} i@'dH3-kO
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C++ Ir]\|t
#include <iostream> M3Kfd
IRbfNq^:
int main() DV{=n C
{ wyG;8I
std::cout << "Hello, world!" << std::endl; D)Dr__x
return 0; J=yTbSN\v
} Q@H V- (A
eDB ;cN
l;V173W=&
C++/CLI .|=\z9_7S8
int main() C7?/%7{
{ tg/H2p^Y
System::Console::WriteLine("Hello, world!"); ?%kV?eu'
} ]%(2hY~i
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C# (C Sharp) q'11^V!0
class HelloWorldApp T
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{ hzC>~Ub5
public static void Main() .8|X
{ JN6B~ZNf
System.Console.WriteLine("Hello, world!"); F5#YOck&,
} nF/OPd
} D#z:()VT(
tI{_y
IM+o.@f-
COBOL >i
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IDENTIFICATION DIVISION. Qei"'~1a
PROGRAM-ID. HELLO-WORLD. 9C i-v/M]
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ENVIRONMENT DIVISION. ,=N.FS
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DATA DIVISION. 07 $o;W@
L.WljNo
PROCEDURE DIVISION. _tXlF;
DISPLAY "Hello, world!". {BHO/q3
STOP RUN. .{KVMc
}d }lR
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Common Lisp ~v"L!=~G;a
(format t "Hello world!~%") [trwBZ^D~
K4);HJ|=
[fIg{Q
DOS批处理 ;S*}WqP,
@echo off !g.?
echo "Hello, world!" {}Za_(Y,]
4H<lm*!^
OUXR
Eiffel Hq 188<
class HELLO_WORLD Xs?o{]Fe
D#)b+7N-
creation ;({W#Wa
make !?gKqx'T$
feature z$xo$R(
make is >dG[G>
local tnG# IU
*
io:BASIC_IO J)C/u{o
do eGHaY4|
!!io m9Hit8f@Q
io.put_string("%N Hello, world!") WeiFmar
end -- make o0vUj
end -- class HELLO_WORLD DDH:)=;z
IB7E}56l
@{O`E^}-D
Erlang Z)aUt
Srf
-module(hello). Ue~CwFOc
-export([hello_world/0]). LE>]8[f6S
d<N:[Y\4l
hello_world() -> io:fwrite("Hello, World!\n"). uU25iDn
xUistwq
\} :PLCKT
Forth Q)[C?obd v
." Hello, world!" CR <3hRyG@vB
H+Sz=tg5
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Fortran w
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WRITE(*,10) 5N&?KA-
10 FORMAT('Hello, World!') \)?HJ
STOP 6b \&~b@T
END 'y3!fN=h
:A'y+MnK<
J6FV]Gpv
HTML kq,ucU%>p
<HTML> nK%LRcAs
<HEAD> u^qT2Ss0
<TITLE> Hello World! </TITLE> vTzlwK\#1
</HEAD> 7Da`
<BODY> R',rsGd`6j
<p>Hello World!</p> Ge-vWf-RbB
</BODY> ]F'e
aR
</HTML> g~A`N=r;h
HqT#$}rv
"mvt>X
HQ9+ .+A+|yR
H DG:Z=LuJr
[}0haTYc4
Q| ?L*Pq2I
INTERCAL 76h ,]xi
PLEASE DO ,1 <- #13 =mp;.k95
DO ,1 SUB #1 <- #238 zsyIV!(
DO ,1 SUB #2 <- #112 #KexvP&*
DO ,1 SUB #3 <- #112 (\YltC@q%
DO ,1 SUB #4 <- #0 6.nCV0xA
DO ,1 SUB #5 <- #64 FSW_<%
DO ,1 SUB #6 <- #238 <+vw@M
DO ,1 SUB #7 <- #26 8i#2d1O
DO ,1 SUB #8 <- #248 F%D.zvKN
DO ,1 SUB #9 <- #168 jQ^|3#L\
DO ,1 SUB #10 <- #24 R3&Iu=g
DO ,1 SUB #11 <- #16 wHMX=N1/
DO ,1 SUB #12 <- #158 DjQFi
DO ,1 SUB #13 <- #52 '=8d?aeF
PLEASE READ OUT ,1 MXNFlP
PLEASE GIVE UP uH- l%17
LR.<&m%~.
Fgh_9S9J
Java A1>OY^p3%
public class Hello O so#+
{ *@=/qkaJaI
public static void main(String[] args) ~^fZx5
{ l$pm_%@2]
System.out.println("Hello, world!"); Jgd'1'FOs
} zFff`]^`
} P'[3Fqe
EC!02S
Mc_YPR:C
JSP 9u}Hmb
<% lbl?k5
out.print("Hello, world!"); a>I+]`g
%> _
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'Nnz k
""F5z,'
MIXAL f=gW]x7'R+
TERM EQU 19 the MIX console device number V/
uP%'cd
ORIG 1000 start address '3DXPR^B6
START OUT MSG(TERM) output data at address MSG ca*DZG/
HLT halt execution ']z{{UNUN
MSG ALF "MIXAL" xvl#w
ALF " HELL" x'>9d
ALF "O WOR" 4`]^@"{
ALF "LD " ,|H
`e^
END START end of the program }1i`6`y1
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Nuva ][h%UrV
<..直接输出..> ]]9R mh=
Hello, world! $f=J2&D,Cz
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<..或者..> =I;ZMJR
6J6BF%
<. sF?TmBQ*
// 不带换行 udUyh%n
? "Hello, world!" j0S#>t
)SRefW.v
// 或者 QP8Ei~
ujq=F
// 带换行 6/Xk7B
?? 'Hello, world!' Eog0TQ+*
.> )E@.!Ut4o
u4F5h PO]
>#~& -3
OCaml >j(_[z|v3
let main () = E}Z/*lX
print_endline "Hello world!";; BsqP?/
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q#ClnG*
Pascal Ou!2[oe@M
program Hello; X0H!/SlS
begin {V$|3m>:*
writeln('Hello, world!'); xPk8$1meZM
end. O%zU-_|*
#Z`q+@@]A
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Perl G"U9E5O
#!/usr/local/bin/perl YYl 4"l
print "Hello, world!\n"; ~tUl}
kmsb hYM)
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PHP &5spTMw8
<?php ZQoU3AD;
print("Hello, world!"); AJ?r,!)
?> wh\}d4gN
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Pike nE&