“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。 #Z6'?p9
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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》。 >^XBa*4;Y
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以下是用不同语言写成的Hello World程序的几个例子: F(na{<g};
Ada kP/M<X"
with Ada.Text_Io; use Ada.Text_Io; aK`@6F,]j
procedure Hello is G$ _yy:
begin dnV[ P
Put_Line ("Hello, world!"); ~T) Q$
end Hello; el:9 wq
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汇编语言 K&8dA0i2u2
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x86 CPU,DOS,TASM D#&q&6P{
MODEL SMALL R+&jD;U{
IDEAL 5/po2V9)
STACK 100H sP^R/z|Y
2tal
DATASEG Sm~l:v0%
HW DB 'Hello, world!$' a'!zG cT
:1Q!$ m
CODESEG YZ%Hu)
MOV AX, @data f4L`.~b'hb
MOV DS, AX L#vI=GpL,r
MOV DX, OFFSET HW hEh}PX:
MOV AH, 09H e["2QIOe
INT 21H /z BxJT0
MOV AX, 4C00H l x,"EOP
INT 21H Nbp!teH6
END 7O,U?p
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hAHq\
x86 CPU,GNU/Linux,NASM 6M13f@v
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 2(/g}
;Enter this into "hello.asm" then type: r2k2%nI-J
;"nasm -f elf hello.asm" To?W?s
;"ld hello.o -o hello" 1UKg=A-q
;"./hello" (
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section .data ;data section declaration Y[L-7^o@y
msg db 'Hello World!',0AH N 5 $c]E
len equ $-msg ;string length |Pg@M
a{[x4d,z
section .text ;code section declaration h[PYP5{L
global _start ;entry point (start of execution) 3Kn_mL3V-
_start: mov edx,len ;string length /PLn+-
mov ecx,msg ;string start gB<3-J1R
mov ebx,1 ;file handle: stdout W^G>cC8.L
mov eax,4 ;sys_write Dgy]ae(Hb3
int 80h ;kernel system call %Q.&ZhB
.jj$ Kh q]
mov ebx,0 ;return value Ek6MYc8<b~
mov eax,1 ;sys_exit 5|1T}Z#;
int 80h ;kernel system call ` \+@Fwfx
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*k19LI.5
x86 CPU,Windows,MASM32 c
9jGq
.386 &8z[`JW,T
.model flat,stdcall VZ\B<i
option casemap:none $jg*pmR-
;Include 文件定义 f"St&q>[s
include windows.inc FXs*vg`
include user32.inc 9ksE>[7
includelib user32.lib '{(UW.Awo
include kernel32.inc qM.bF&&Go
includelib kernel32.lib lv]hTH 4T
;数据段 :hM/f
.data (7 r<''
szCaption db 'A MessageBox!',0 `(3/$%
szText db 'Hello,world!',0 ,~"$k[M
;代码段 "U\4:k`:
.code wR^ RM(1
start: [w -l?
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ak;*W
invoke ExitProcess,NULL 6qaulwV4t
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Jm42b4
end start >ss/D^YS
="g*\s?r
$ >EYhLBa
AWK $ mI0Bk
BEGIN { print "Hello, world!" } }oNhl^JC
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BASIC {\(L%\sV@
传统版BASIC(例如GWBASIC): ;
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d`F&aC
10 PRINT "Hello, world!" 3%E74 mOcD
20 END K=,F#kn
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或在提示符输入: ,JEFGI{
'60 L~`K
?"Hello, world!":END *;fw%PW
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现代版BASIC(例如Quick BASIC): Q_Gi]M9
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Print "Hello, world!" Et/&^&=\-
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以下的语句在Quick BASIC中同样有效: dS<C@(
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? "Hello,world!" /<]{KI
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BCPL u,w:SM@*(
GET "LIBHDR" ivW(*c
YE9,KVV;$n
LET START () BE oD$J0{K6
$( <Ce2r"U1e
WRITES ("Hello, world!*N") ,.qMEMm
$) #jxe%2'Ot
1hziXC0WY
'FS?a
Befunge `IY/9'vT
"!dlrow olleH">v l!g]a2x*
, ~R@Nd~L
^_@ }eRD|1
g=$1cC+(
T.qNCJmB
Brainfuck %Pqf{*d8
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 4M^G`WA}t9
+++++++++++++++.>.+++.------.--------.>+.>. HVC>9_:]
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44F`$.v96
C b&5lY p"d
#include <stdio.h> hjQ~uqbg
;j)FnY=: -
int main(void) ._+J_ts
{ {U_$&f9s
printf("Hello, world!\n"); ~fo6*g:f1
return 0; 8 P>#l. #
} &CG*)bE
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C++ 7ek&[SJ>,/
#include <iostream> Qr$;AZ G
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int main() 56Vb+0J'
{ [o<VVtB.Gk
std::cout << "Hello, world!" << std::endl; VV9_`myN7
return 0; nM0[P6p
} ?K3(D;5
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leQT-l2Bk
:,DM*zBVp
C++/CLI hsw9(D>jp
int main() Bk+{RN(w
{ @_LN3zP
System::Console::WriteLine("Hello, world!"); 2~t[RY
} YXI'gn2b#
PClMQL#
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C# (C Sharp) FEJ~k1z
class HelloWorldApp nYJTKU
{ s|NjT
public static void Main() XyOl:>%L!P
{ ku..aG`
System.Console.WriteLine("Hello, world!"); q`G, L(
} ]7Z{ 8)T
} e0$=!QlPr
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9Fr3pRIJ
COBOL 1u|Rl:Q
IDENTIFICATION DIVISION. T =2=k&|
PROGRAM-ID. HELLO-WORLD. p^pOuy8
HyR!O>
ENVIRONMENT DIVISION. Hp(D);0+)
}`NU@O#
DATA DIVISION. L=8+_0
Rd>B0;4
PROCEDURE DIVISION. yA3wtm/?
DISPLAY "Hello, world!". A'%1ZQ33O
STOP RUN. h48SItY
zR32PG>9
<Tot|R;
Common Lisp Jx=hJ-FY
(format t "Hello world!~%") ez9q7SpA
H&yD*@
ys#i@
DOS批处理 l]]l
@echo off ?}B:
echo "Hello, world!" \t|M-%&)4
VG>vn`x>a
/o2P+Xr8"
Eiffel q}FVzahv
class HELLO_WORLD g%k`
c1xrn4f@a
creation . ]8E7
make wlPx,UqZ
feature v<9&B94z
make is v-! u\
local zY|klX})
io:BASIC_IO Q_vW3xz
do Ou>vX[{
!!io 1>Q'R
io.put_string("%N Hello, world!") p)~lL
end -- make ^bLRVp1
end -- class HELLO_WORLD U/NBFc:[y:
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Erlang Bu]t*$
-module(hello). T{}fHfM
-export([hello_world/0]). WX4;l(PL=
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hello_world() -> io:fwrite("Hello, World!\n"). i7LJ&g/)
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/(8a~f&%r
Forth HBB{m
." Hello, world!" CR wdvLx
wJlX4cT4YV
j:bgR8%e
Fortran }17.~
WRITE(*,10) NS C/@._
10 FORMAT('Hello, World!') dC1V-x10ju
STOP RL[E X5U
END F6hmku>\1
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:3$}^uzIq
HTML T%R:NQf
<HTML> [= "r<W0
<HEAD> p#KW$OQ]8
<TITLE> Hello World! </TITLE> H7[6yh
</HEAD> 90xk$3(
<BODY> 0L^u2HZYL
<p>Hello World!</p> Z"s|]K "
</BODY> q:8_]Qt
</HTML> jtm?z c
drq hQ
yA[({2%
HQ9+ q/1Or;iK
H
st'D
=xianQ<lK
V#q}Wysft
INTERCAL bqx0d=Z~[
PLEASE DO ,1 <- #13 1t9 .fEmT
DO ,1 SUB #1 <- #238 /hv#CB>1x
DO ,1 SUB #2 <- #112 :!zC"d9@
DO ,1 SUB #3 <- #112 smQVWs>
DO ,1 SUB #4 <- #0 JmpsQ,,
DO ,1 SUB #5 <- #64 #&,H"?"
DO ,1 SUB #6 <- #238 5f:DN\ ]
DO ,1 SUB #7 <- #26 Tx%VU8\?n
DO ,1 SUB #8 <- #248 j*;N\;iL!*
DO ,1 SUB #9 <- #168 R \s!*)
DO ,1 SUB #10 <- #24 [t0rfl{.
DO ,1 SUB #11 <- #16 ?nKF6f
DO ,1 SUB #12 <- #158 $WW)bP
d4^
DO ,1 SUB #13 <- #52 $(q>mg:H
PLEASE READ OUT ,1 cyd~2\Kv~
PLEASE GIVE UP %G3sjnI;l
jQj,q{eA
iz]rFNR
Java #Tp]^
n
public class Hello [{&jr]w`|
{ G.U5)4_^
public static void main(String[] args) y:}sD_m0W
{ Ps R>V)L
System.out.println("Hello, world!"); }lZ>
} yy(A(}
} #NRh\Wj|
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