“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。 ,ciNoP*-~%
MiRMjQ2
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》。 Nzr zLK
WM>9sJf
以下是用不同语言写成的Hello World程序的几个例子: d;'@4NX5+
Ada c| p
eRO.
with Ada.Text_Io; use Ada.Text_Io; ;GvyL>|-~
procedure Hello is d;dcLe
begin (M[Kh ^
Put_Line ("Hello, world!"); H]}-
U8}sp
end Hello; z3a
te^PJF
l
"d&Sgnj
VF6@;5p
汇编语言 pX!S*(Q{
;jnnCXp>
x86 CPU,DOS,TASM g3Ff<P P
MODEL SMALL /n:s9eq
IDEAL > m5j.GP;
STACK 100H KsHovv-A
qAG0t{K
DATASEG ~_h4|vG
HW DB 'Hello, world!$' u/k#b2BqL
Ar>Om!]=v
CODESEG .4?M.Z4[
MOV AX, @data we{*%8I;
MOV DS, AX +z9;BPw%
MOV DX, OFFSET HW ;2bG-v'4vO
MOV AH, 09H eo,m ^&
INT 21H JfC.U,7Nc
MOV AX, 4C00H ,ZH)[P)5P
INT 21H ]YwIuz6 ]
END ImvkB~8N
5+ VdZ'@
;ATk?O4T
x86 CPU,GNU/Linux,NASM i?mDR$X:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 6 !+"7r6
;Enter this into "hello.asm" then type: ZtB0:'o;
;"nasm -f elf hello.asm" '6K WobXm
;"ld hello.o -o hello" na/t=<{
;"./hello" -h.']^I
La3f{;|u5M
section .data ;data section declaration PJb_QL!9
msg db 'Hello World!',0AH hJaqW'S
len equ $-msg ;string length bt~-=\
5"@<7/2qI
section .text ;code section declaration {uw'7 d/
global _start ;entry point (start of execution) b Z%[ON5OY
_start: mov edx,len ;string length NB16O!r
mov ecx,msg ;string start q9!5J2P
mov ebx,1 ;file handle: stdout I80.|KIv
mov eax,4 ;sys_write |F6C&GNYT
int 80h ;kernel system call OPKm^}
)zr/9aV
mov ebx,0 ;return value UpB7hA
mov eax,1 ;sys_exit ,=K!Y TeVl
int 80h ;kernel system call >.M
`Fz.
YBg\L$|n
^hZwm8G
x86 CPU,Windows,MASM32 ty/jTo}
.386 \r<&7x#j
.model flat,stdcall ] niWRl
option casemap:none !fz`O>-mZ
;Include 文件定义 oYOf<J
include windows.inc E%+V\ W%
include user32.inc pY-izML
includelib user32.lib |nocz]yU$
include kernel32.inc UVU}
includelib kernel32.lib ^3*gf}
;数据段 }S%a]
.data 2]Y (<PC
szCaption db 'A MessageBox!',0 m#8KCZS
szText db 'Hello,world!',0 BNaZD<<
;代码段 in B}ydk
.code KF7f<
start: U>X06T
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK <2,@rYe/
invoke ExitProcess,NULL 93YD\R+q
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >%d]"]
end start ?J)%.~!
YM#XV*P0 q
xcoYo
AWK ~ocd4,d=
BEGIN { print "Hello, world!" } R?X9U.AcW
0aGfz=V&
m<OxO\ Mpf
BASIC a9D5qj
传统版BASIC(例如GWBASIC): H&%=>hyX
fpoH7Jd V
10 PRINT "Hello, world!" J-u,6c
20 END zJ &qR
+R*4`F:QJQ
或在提示符输入: j*+r`CX
/mr&Y}7T
?"Hello, world!":END ?k"KZxpT
BH*vsxe
现代版BASIC(例如Quick BASIC): k&^Megcb
u5idH),<
Print "Hello, world!" EiT
raWV"O
{d )Et;_
以下的语句在Quick BASIC中同样有效: .# M5L
#|$7. e
? "Hello,world!" oNiS"\t
VgoQz]z
E$Ge#
M@dM
BCPL $SXF>n{}
GET "LIBHDR" Ke,-8e#Q
((X"D/F]
LET START () BE MTqbQ69v
$( %DRDe
WRITES ("Hello, world!*N") w7%N=hL1
$) s/A]&!`
R~c(^.|r
J-X5n 3I&
Befunge Vy(lyD<6
"!dlrow olleH">v !!` zz
, 2$3BluK
^_@ Mzb_o2^(
gXf_~zxS
_I'O4s1S
Brainfuck 8YYY *>
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< KY_qK)H
+++++++++++++++.>.+++.------.--------.>+.>. 6+LXoR'
V7^?jy&&
0@xuxm/i
C g%\e80~1 (
#include <stdio.h> 7s[ ATu
NT8%{>F`
int main(void) V-X n&s
{ sRoZvp5
printf("Hello, world!\n"); t+h"YiT
return 0; J(l6(+8
} +)7NWR\
{0QA+[Yd&!
=%RDT9T.
C++ Y ,}p
#include <iostream> VK|!aqA{b
T;FzKfT|
int main() (@&|
{ WxXVL"
std::cout << "Hello, world!" << std::endl; VD=$:F]
return 0; *w%;$\^
} 4&&j7$aV
EIF[e|kZ<
xw?G?(WO
C++/CLI ~" $9auQtC
int main() ,fYO>l';`f
{ f0hi70\(X
System::Console::WriteLine("Hello, world!"); m7 !l3W2
} J4co@=AJ
B3yn:=80
>U) ,^H(
C# (C Sharp) E8-p
,e,
class HelloWorldApp TbXZU$[c
{ zZE?G:isR
public static void Main() -R\}Q"
{ )s^XVs.-
System.Console.WriteLine("Hello, world!"); !$d:k|b
} r@n%
} @-MrmF)<U
{O"dj;RU
IGI2).$[
COBOL ;M JM~\L0
IDENTIFICATION DIVISION. 1}'Jbj"/
PROGRAM-ID. HELLO-WORLD. QeQbO
$/d~bk@=l
ENVIRONMENT DIVISION. w]%r]PwU+
Sa<R8X'J
DATA DIVISION. pF8'S{y
vJcvyz#%1
PROCEDURE DIVISION. gr-%9=Uq
DISPLAY "Hello, world!". |]B]0J#_
STOP RUN. $~9U-B\
k} <mmKB
U O[p
Common Lisp l_kH^ET
(format t "Hello world!~%") [Zua7&( 5
D@Wm-
RGxOb
DOS批处理 +B&FZ4'
@echo off ?Ts
Z_
echo "Hello, world!" S63L>p|ml
~ 01]VA
82w<q(
Eiffel ___+5r21\
class HELLO_WORLD XBeHyQp
mV'd9(s?
creation km3-Hp1
make xbmOch}j6
feature VSSiuo'5w
make is ;j52a8uE'}
local p4el9O&-tV
io:BASIC_IO 5N[Y2
do M.l;!U!}
!!io Ao]F_hZ
io.put_string("%N Hello, world!") 3Yr
end -- make e~}+.B0
end -- class HELLO_WORLD
\(A>~D8Fo
'i@Y #F%D
Fm2t:,=
Erlang dA_s7),
-module(hello). x,1&ml5
-export([hello_world/0]). =Of#Ps)
ZERd#7@m+
hello_world() -> io:fwrite("Hello, World!\n"). %Ajf|Go0/G
pFG~XW
|Rab'9U^
Forth ]9x30UXLwD
." Hello, world!" CR Nls|R
55[K[K
vR`KRI`{
Fortran MZ+"Arzb
WRITE(*,10) T$q]iSgu
10 FORMAT('Hello, World!') $4eogI7N>w
STOP xW^<.@Agm
END oZzE.Q1T
xAoozDj
z#-&M J
HTML
t qER;L
<HTML> 2Hq!YsJ4]
<HEAD> c(eu[vj:
<TITLE> Hello World! </TITLE> ricDP 9#a
</HEAD> VX- f~
<BODY> 0_Y;r{3m"
<p>Hello World!</p> }ShZ4 xMz
</BODY> g:*yjj
</HTML> AU7c =
H:?
[PU.lRq
7%F9.h
HQ9+ _=cMa's
H FB</~
g
"OWq]q#
1f~DUku=
INTERCAL 2R1W[,Ga!
PLEASE DO ,1 <- #13 +-{HT+W
DO ,1 SUB #1 <- #238 @ojn<7W
DO ,1 SUB #2 <- #112 t[DXG2&
DO ,1 SUB #3 <- #112 ME7JU|@Z
DO ,1 SUB #4 <- #0 D)mqe-%1
DO ,1 SUB #5 <- #64 '7xY,IY
DO ,1 SUB #6 <- #238 .vb*|So
DO ,1 SUB #7 <- #26 Q"(i
DO ,1 SUB #8 <- #248 +^%F8GB
DO ,1 SUB #9 <- #168 _-h3>.;h9
DO ,1 SUB #10 <- #24 ;=E3f^'s
DO ,1 SUB #11 <- #16 KQ 2]VN"?_
DO ,1 SUB #12 <- #158 'DKP-R"
DO ,1 SUB #13 <- #52 {j(,Q qB;f
PLEASE READ OUT ,1 L>PpXTWwy
PLEASE GIVE UP gfp#G,/B
p2cKtk+
x JepDCUJ>
Java dpE+[O_
public class Hello ]6(NeS+
{ A\?O5#m:$
public static void main(String[] args) {0[qERj"z
{ *W0`+#Dcv
System.out.println("Hello, world!"); DsP+#PX
} @F=4B0=
} \K>6-0r|
rK`*v*
z
|t0mS$
JSP T}zOM%]]
<% ++FMkeHZ
out.print("Hello, world!"); gE%- Pf~
%> JNsK
8S)k]$ wf%
7o;}"Y1
MIXAL uODpIxN
TERM EQU 19 the MIX console device number d_OHQpfK
ORIG 1000 start address Y pp>7J/
START OUT MSG(TERM) output data at address MSG v/(< fI^
HLT halt execution Dn9Ta}miTO
MSG ALF "MIXAL" T3Tk:r
ALF " HELL" 0chBw~@*s
ALF "O WOR" Iunt!L
ALF "LD " 7?F0~[eGG
END START end of the program ?6a:!^eL
2.CI^.5&
Gm_Cq2PD(
Nuva 92S<TAdPP
<..直接输出..> CjD2FnjT
Hello, world! *}LYMrP
#LcF;1o%o2
<..或者..> rH & ^SNc
/#.6IV(
<. =0O`VSb
// 不带换行 (B[0BjU
? "Hello, world!" {@({po
]ul]L
R%.
// 或者 eH75:`
VFRUiz/C
// 带换行 `L0}^|`9
?? 'Hello, world!' +A/n<VH
.> b}axw+
S3.Pqp_<
#IgY'L
OCaml )5p0fw
let main () = w+[r$+z!k
print_endline "Hello world!";; I>fEwMk~
@m#7E4+
02b v0
Pascal ^cX);koO
program Hello; &;*jMu6
begin &i6WVNGy
writeln('Hello, world!'); k;q|pQ[
end. Xul<,U~w6
c"6<p5j!
U
Tw\_s
Perl ~6E
`6;`
#!/usr/local/bin/perl ~-|K5
print "Hello, world!\n"; Bg Uf:PT
L`3 g5)V
Gi?"
PHP h=?#D0
<?php ax,%07hJ
print("Hello, world!"); ^ WidA-
?> CH!Lf,G
YY'46
? !cUAa>iH
Pike 1Hk`i%
#!/usr/local/bin/pike uq{w1O5
int main() 11O^)_|c
{ 1iig0l6\m
write("Hello, world!\n"); #r>
return 0; D&: