“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。 dWW-tHv#
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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》。 nz&b5Xb2
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以下是用不同语言写成的Hello World程序的几个例子: 8V=HyF#
Ada lrmt)BLoh
with Ada.Text_Io; use Ada.Text_Io; f>s#Ngvc
procedure Hello is 2w x[D
begin ~b>nCP8q
Put_Line ("Hello, world!"); %qNj{<&
end Hello; 5&n988gC8
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P,$[|)[E
汇编语言 PtRj9TT
1%SJ1oY
x86 CPU,DOS,TASM [NCXn>Z
MODEL SMALL %;=IMMK
IDEAL ,<Grd5em.
STACK 100H PUQ_w
,);=
(r9
DATASEG , `[Z`SUk`
HW DB 'Hello, world!$' Qe @A5#
>tmnj/=&
CODESEG c6?c>*z
MOV AX, @data F;d%@E_Bc
MOV DS, AX GG@I!2,_
MOV DX, OFFSET HW gfdPx:7^
MOV AH, 09H t3
uB
INT 21H [Q7->Wo|S:
MOV AX, 4C00H c]%;^)
INT 21H @o4z3Q@
END zH=/.31Q
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T
=A0"0D{\
x86 CPU,GNU/Linux,NASM =9DhO7I'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). v|4STR
;Enter this into "hello.asm" then type: nxn[ ~~
;"nasm -f elf hello.asm" i_[
HcgT-
;"ld hello.o -o hello" wL8bs-
U
;"./hello" (1kn):
] 689 Q%D
section .data ;data section declaration G_2gKkIK-
msg db 'Hello World!',0AH DGa#d_I
len equ $-msg ;string length f7_\).T
="5k\1W1M
section .text ;code section declaration r/N[7*i
global _start ;entry point (start of execution) |aI|yq)
_start: mov edx,len ;string length g33<qYxP
mov ecx,msg ;string start XI%RneuDr:
mov ebx,1 ;file handle: stdout q7O,I`KaJ
mov eax,4 ;sys_write 0%h[0jGj
int 80h ;kernel system call QoW(tM
dT0^-XSY
mov ebx,0 ;return value vWqyZ-p,q
mov eax,1 ;sys_exit aWHd}%
int 80h ;kernel system call (B>yaM#5
p~Yy"Ec;p
D+ah ok
x86 CPU,Windows,MASM32 hb /8Q
.386 .KT 7le<Zm
.model flat,stdcall hV3,^#9o
option casemap:none x"(7t3xK
;Include 文件定义 WX%h4)z*
include windows.inc _SMT.lG
include user32.inc i63`B+L{
includelib user32.lib M(;y~|e
include kernel32.inc %gV)arwK
includelib kernel32.lib $?]@_=
;数据段 F9m 2C'U
.data tl{]gz
szCaption db 'A MessageBox!',0 ql!5m\
szText db 'Hello,world!',0 p/ziFpU
;代码段 '\ph`Run
.code 8_^'(]
start: -vv
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK $:%*gY4~76
invoke ExitProcess,NULL $\0cJCQ3
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> o
:.~X
end start FX7Cjo#=R
S_(&UeTC
|Q5H9<*
AWK k9*J*7l-m
BEGIN { print "Hello, world!" } g)=V#Bglv
!pd7@FwC
X0^zw^2W
BASIC X)FL[RO%q
传统版BASIC(例如GWBASIC): _N>wzkJ
6obQ9L c
10 PRINT "Hello, world!" M,b<B_$
20 END M*g2VyZ
u~#%P&3_W
或在提示符输入: i:l80 GK
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?"Hello, world!":END C!$Xv&"r
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现代版BASIC(例如Quick BASIC): QT`fix{
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Print "Hello, world!" 68vxI|EZ
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以下的语句在Quick BASIC中同样有效: 2"T8^r|U
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? "Hello,world!" /'-:=0a
::4"wU3t
K&j'c
BCPL z`\#$
GET "LIBHDR" rDpe_varA
f?2zLE>u
LET START () BE mcvDxjk,h
$( X tJswxw`K
WRITES ("Hello, world!*N") ^OHZ767v
$) 'jh2**i 34
dj?G.-
V8-4>H}Cb/
Befunge YH6snC$u
"!dlrow olleH">v I'x$,s
, Q<z)q<e
^_@ *
zd.
a^@+%?X
5?^]1P_
Brainfuck 0w^jls
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< '"Bex`
+++++++++++++++.>.+++.------.--------.>+.>. V%i<;C
Zkw J.SuU
B#J{ F
C b OW}"
#include <stdio.h> uEBQoP2
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int main(void) K3La9O)>
{ q A.+U:I8
printf("Hello, world!\n"); |c<XSX?ir
return 0; CKJAZ 2
} Jm?l59bv
v
i:g{{Uuv
OlIT|bzkb
C++ AdDQWJ^r
#include <iostream> t$aVe"uM
|__d 8a
int main() H!p!sn
{ %(fL?
std::cout << "Hello, world!" << std::endl; Tsu\oJ[
return 0; b21}49bHN
} k"t>He
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[.M
C++/CLI
Q{O/xLf
int main() ;9K[~
{ >Ja0hS{*
System::Console::WriteLine("Hello, world!"); ggMUdlU
} 3)dP7rmZ
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,&0Z]*
C# (C Sharp) `$H7KI G
class HelloWorldApp Xu6jHJ@ x
{ Xz8$Xz,O
public static void Main() <|otZJ'2r
{ ldP3n:7FS
System.Console.WriteLine("Hello, world!"); [qSQ#Qzi2i
} k9cK bf@
} GX7VlI[
m{VL\ g)
R j-jAH
COBOL m^z,,t9
IDENTIFICATION DIVISION. HTw#U2A;+
PROGRAM-ID. HELLO-WORLD. ;D:=XA%
KvGbDG
ENVIRONMENT DIVISION. |n)<4%i8J
<Uf|PFVj$
DATA DIVISION. Ks|gL#)*Ku
/\~l1.6`
PROCEDURE DIVISION. R;%^j=Q
DISPLAY "Hello, world!". n>n"{!
STOP RUN. EVWA\RO'\
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2W
eVTO#R*'|
Common Lisp 2mQOj$Lv
(format t "Hello world!~%") )ukF3;Gt
U8E0~[y'
*jGPGnSo
DOS批处理 (yfXMp,x
@echo off %t q&
echo "Hello, world!" Kf|0*c
P7'M],!9w
'\@WN]
Eiffel hUBF/4s\
class HELLO_WORLD |%-YuD
Rb?~ Rs\
creation li@kLh
make Urn
feature )mj<{Td`
make is l4zw]AYk+X
local iEe#aO"D!
io:BASIC_IO iFSJ4 W(
do a"k'm}hVY$
!!io 6`1k
^
io.put_string("%N Hello, world!") ekrBNDs9
end -- make f0OgK<.>T
end -- class HELLO_WORLD 'w:bs!
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3XnE y
+
Erlang # 9V'';:
-module(hello). ZH!;z-R
-export([hello_world/0]). }H5/3be
ZxI]I1)
hello_world() -> io:fwrite("Hello, World!\n"). V>AS%lXj
JfSdUWxT
?x'w~;9R/
Forth ~C0Pu.{o
." Hello, world!" CR L -YNz0A
Ll?g.z"
vABXXB
Fortran >C:If0S4X
WRITE(*,10) EPv%LX_j
10 FORMAT('Hello, World!') p x0Sy|
STOP Nvhy3
END )}quw"H
g(nK$,c
j|k@MfA
HTML f'i6QMk\&
<HTML> v O PMgEI
<HEAD> QsM*wT&aa
<TITLE> Hello World! </TITLE>
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</HEAD> 4aA9\\hfGY
<BODY> *N`;I@Q"[
<p>Hello World!</p> Wy8,<K{
</BODY> 1c/
X
</HTML> p+vh[+yp
C>NQ-w^
oikxg!0S
HQ9+ D@:"f?K>
H t|<FA#
ZRPE-l_3:
my4\mi6P
INTERCAL $3]b>v
PLEASE DO ,1 <- #13 t GC2
^a#~
DO ,1 SUB #1 <- #238 Tn /Ut}]O
DO ,1 SUB #2 <- #112 Ms,@t^nk
DO ,1 SUB #3 <- #112 >J>>\Y(p
DO ,1 SUB #4 <- #0 "U*5Z:8?9
DO ,1 SUB #5 <- #64 YroNpu]s
DO ,1 SUB #6 <- #238 .x>HA^4
DO ,1 SUB #7 <- #26 g1ytT%]
DO ,1 SUB #8 <- #248 dGU8+)2cn
DO ,1 SUB #9 <- #168 CB6 o$U
DO ,1 SUB #10 <- #24 TqAtcAurM
DO ,1 SUB #11 <- #16 *Er? C;
DO ,1 SUB #12 <- #158 LfHzT<)|
DO ,1 SUB #13 <- #52 J$rJd9t
PLEASE READ OUT ,1 6Etss!_
PLEASE GIVE UP lJUy;yp_+
\1]rlzXGUT
W-ez[raY
Java _Ds@lVY
public class Hello P,U$ %C!
{ b9DR%hO:
public static void main(String[] args) `[OXVs,7"
{ /z#F,NB
System.out.println("Hello, world!"); 'u1=XX
h
} ~GA8_B
} &kiF/F 1
TOrMXcn!/
0d";Hh:
JSP aiJnfU]W
<% bs
BZE
out.print("Hello, world!"); R3Ee%0QK
%> Fe5jdV<
cLAesj
6{8/P'@/Zz
MIXAL vlu$!4I
TERM EQU 19 the MIX console device number ]x@~-I )
ORIG 1000 start address VVFV8T4
START OUT MSG(TERM) output data at address MSG jWSb5#Pw
HLT halt execution |Q5+l.%
MSG ALF "MIXAL" L{<7.?{Y
ALF " HELL" j %H`0
ALF "O WOR" <XvYa{t]{
ALF "LD " JtFiFaCxY
END START end of the program ,z[(k"
t$5jx
ZtR&wk
Nuva Za0gs @$
<..直接输出..> St2Q7K5s{
Hello, world! VKNp,Lf
`R0Y+#$8h
<..或者..> a*s\Em7f
4\HsU9x
<. Z(`r -}f I
// 不带换行 rnH}#u+
? "Hello, world!" rH.gF43O:
p1~*;;F
// 或者 6g~+( ({lQ
r@yD8 D \
// 带换行 ami09JHy
?? 'Hello, world!' +9C;<f
.> RG&6FRoq
1}nm2h1 I
l2s{~ IC
OCaml pC^2Rzf
let main () = ssA7Dx:
print_endline "Hello world!";; l])Q.m
x W\,KSK
vK:QX$b
Pascal t!0dJud
program Hello; tt{`\1q
begin ,Bf(r
writeln('Hello, world!'); FT(iX`YQ
end. ZV(
w
l&Q!mU}
9n 6fXOC
Perl 3q?5OL^$
#!/usr/local/bin/perl )88nMH-
print "Hello, world!\n"; fhr-Y'
)!sa)\E?
-dG,*0 >
PHP $rB6<
<?php Y"*:&E2)r
print("Hello, world!"); iadkH]w
?> Z2bUs!0
R8 jovr
|xeE3,8
Pike #w*"qn#2Uz
#!/usr/local/bin/pike 4.'JLArw
int main() GS4_jvD-
{ mW +tV1XjG
write("Hello, world!\n"); .8(%4ejJ(
return 0; r.<JDdj
} Uouq>N
wS%zWdsz
8gI\zgS
PL/I 5(#-)rlGj
Test: procedure options(main); s i?HkJv5
declare My_String char(20) varying initialize('Hello, world!'); W>/UBN3
put skip list(My_String); H(&Z:{L
end Test; t!t=|JNf{
6v>z h
CKd3w8;
Prolog (tKMBxQo8
goal + Kk@Q
write("hello,world!"). u|OtKq
{g_@Tuu
.`J:xL%Z
Python ^mf jn-=3
#!/usr/local/bin/python <[<247%
print "Hello, world!" y
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w~LU\Ct
y<*-tZV[
REXX wDw<KU1UK
say "Hello, world!" IT&i,`cJ~F
a:}E& ,&M
?wCs&tM
Ruby |[LE9Lq/
#!/usr/bin/ruby Y&GuDLUF
print "Hello, world!\n" ,C:o`fQ\
IN_gF_@%
C{&)(#*L
Scheme K'Spbn!nC
(display "Hello, world!") 0H+c4IW
(newline) g_M^E-3
~6HDW
=~JfVozU
sed (需要至少一行输入) JO}?.4B
sed -ne '1s/.*/Hello, world!/p' iaRR5D-
%w:'!X><
Nv3tt
Smalltalk *~;8N|4<
Transcript show: 'Hello, world!' HsH<m j
HH zEQV Lh
5~s{N
SNOBOL 8Zw]f-5x\
OUTPUT = "Hello, world!" ;"@ :}_t
END 2kJ!E@n7
u>o<tw%Y
zt?H~0$LB
SQL #HG&[Ywi
create table MESSAGE (TEXT char(15)); W>$BF[x!{
insert into MESSAGE (TEXT) values ('Hello, world!'); [pR)@$"k'
select TEXT from MESSAGE; "teyi"U+
drop table MESSAGE; X+at%L=
'=#5(O%pp
O9e.=l
Tcl Abf1"#YImy
#!/usr/local/bin/tcl GX5W^//}
puts "Hello, world!" liD47}+
gn.Ol/6D
(I~\,[
TScript )eq}MaW+j
? "Hello, world!" H&K3"Ulw
85hQk+Bu4
0x71%=4H^x
Turing y||@?Y
put "Hello, world!" "5|\X<f
lsFfb'>
"kr,x3
=
UNIX-style shell vgo{]:Aj{
程序中的/bin/sh可改为您使用的shell Mz\yPT;Y
)!a$#"'
#!/bin/sh ^aptLJF
echo 'Hello, world!' D 'n7&