“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。 0N3tsIm>
"PDSqYA
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》。 7Y @=x#
)l[7;ZIw$
以下是用不同语言写成的Hello World程序的几个例子: a dz;N;rIY
Ada n/-p;#R
with Ada.Text_Io; use Ada.Text_Io; go%X%Os]
procedure Hello is S#0|#Z5qD
begin <=y58O]x
Put_Line ("Hello, world!"); +hKPOFa'
end Hello; (8m\#[T+R
ru6H nLhL
r/s&ee
汇编语言 Vp{RX8?.
5f^`4pT
x86 CPU,DOS,TASM x1hs19s
MODEL SMALL QF.wtMGF&
IDEAL CgT QGJ}-
STACK 100H )8N)Z~h
^B"_b?b
DATASEG tWX+\ |
HW DB 'Hello, world!$' 2AdHj&XE
)l!&i?h%
CODESEG IpaJ<~ p
MOV AX, @data !i"9f_
MOV DS, AX dC;d>j,
MOV DX, OFFSET HW >`,#%MH#
MOV AH, 09H EK- bvZ
INT 21H l`5}i|4KTW
MOV AX, 4C00H o y%g{,V
INT 21H \Dsl7s=
END as!|8JE`
I`n1M+=%
+IOKE\,Y
x86 CPU,GNU/Linux,NASM ]zM90$6
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). -"JE-n
;Enter this into "hello.asm" then type: )V+Dqh,-g
;"nasm -f elf hello.asm" :EldP,s#x%
;"ld hello.o -o hello" ,9l!fT?iH
;"./hello" '$L= sH5
<&m
section .data ;data section declaration 3Ns:O2|
msg db 'Hello World!',0AH /*R' xBr
len equ $-msg ;string length G3?a~n^b
MgK(gL/&[
section .text ;code section declaration ?$8 ,j+&I
global _start ;entry point (start of execution) EpoQV ^Ey
_start: mov edx,len ;string length $lG--s
mov ecx,msg ;string start 7[?}kG
mov ebx,1 ;file handle: stdout >8mW-p
mov eax,4 ;sys_write #<V'gE
int 80h ;kernel system call 5bqYi
V:"\(Y
mov ebx,0 ;return value va*>q-QCr
mov eax,1 ;sys_exit ea[a)Z7#
int 80h ;kernel system call xyJgHbml
<wGTs6
XkfUPbU
x86 CPU,Windows,MASM32 f.xSr!
.386 r@V(w`
.model flat,stdcall D]>86&
option casemap:none T6?d`i i1
;Include 文件定义
6V_5BpXt
include windows.inc Pc:'>,3!V3
include user32.inc ~(doy@0M
includelib user32.lib "e};?|y
include kernel32.inc vR.6^q
includelib kernel32.lib %^@0tT
;数据段 Fb4S/_
V
.data -){^
Q:u
szCaption db 'A MessageBox!',0 oIR%{`3"I
szText db 'Hello,world!',0 58gt*yVu
;代码段 vH\nL>r
.code O7_NXfh|
start: K]azUK7
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK }j<_JI
invoke ExitProcess,NULL #(}_2x5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> b:d.Lf{y7
end start { dxyBDK
Hn2Q1lF-ip
_xwfz]lb+
AWK <qj@waKw4
BEGIN { print "Hello, world!" } KqIe8bi^G
gRd1(S
7^}Z%c
BASIC 9*Mg<P"
传统版BASIC(例如GWBASIC): y]z# ??
B!C32~[
10 PRINT "Hello, world!" 3G0\i!*t
20 END [8g\pPQ
C4d1*IQk
或在提示符输入: OpX
~CTRPH
?"Hello, world!":END w5G34[v
vP;tgW9Qk
现代版BASIC(例如Quick BASIC): j3'/jk]\
^Q+5M"/8
Print "Hello, world!" @ShJ:
j{+I~|ZB,
以下的语句在Quick BASIC中同样有效: H;}ue
,UJPLj^
? "Hello,world!" n7<-lQRaxZ
Xpz-@fqKdf
.TU15AAc
BCPL 6*oTT(0<p
GET "LIBHDR" vb2O4%7tw
|"&4"nwa
LET START () BE Olrw>YbW
$( ?fwr:aP~
WRITES ("Hello, world!*N") t-{OP?cE1
$)
jS)-COk
Ho{?m^
lt2&uYgp
Befunge ^g"6p#S=n
"!dlrow olleH">v ]o[HH_`s@
, Wl"fh_
^_@ ag4^y&
6m<9^NT
zT 40,rk
Brainfuck \}(-9dr
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< JugQ +0
+++++++++++++++.>.+++.------.--------.>+.>. F#9KMu<<cI
iFT3fP'> 5
4SO{cst
C : .eS|
#include <stdio.h> *J-jr8&
N^j''siB
int main(void) PU\q.y0R
{ rMx_ <tX X
printf("Hello, world!\n"); AYtcN4\/
return 0; U}5KAi 9Z
} |-?b)yuAz
c'4 \F9
jDR\#cGrZ
C++ 4ov~y1Da)
#include <iostream> Qx#)c%v\\
(bXp1*0 ;
int main() wn.0U
{ F=lj$?4{
std::cout << "Hello, world!" << std::endl; 5Ww\h
return 0; 7}?z=LHb3
} s7gf7E#Y
LD"}$vfs
,*#M%Pv1t
C++/CLI ZuON@ (
int main() QpZhxp
{ P,], N)
System::Console::WriteLine("Hello, world!"); D{}\7qe
} eS+LFS7*k
=swcmab;
Lf<9GYNy>`
C# (C Sharp) 7m$/.\5
class HelloWorldApp MYm6C;o$
{ jP]'gQ!-w
public static void Main() ?^0Z(<Arz
{ kF7Al]IgT
System.Console.WriteLine("Hello, world!"); Yf9L~K
} B) iJH
} -4a&R=%p
YRXe j
6<GWDO
COBOL q3:'
69
IDENTIFICATION DIVISION. m/h0J03'T
PROGRAM-ID. HELLO-WORLD. *GMRu,u2
mI18A#[ 3
ENVIRONMENT DIVISION. 8gdOQ=a
G 3x1w/L
DATA DIVISION. k#M W>
UJ&,9}L8
PROCEDURE DIVISION. N:zSJW`1
DISPLAY "Hello, world!". 1 ErYob.p
STOP RUN. _E 8SX
v
we?#)9Q<
MS)bhZvO
Common Lisp _u!G6
(format t "Hello world!~%") R["7%|RV
Fx\Re]~n
x]M1UBnMN
DOS批处理 }9dgm[C[b
@echo off DKH9O
echo "Hello, world!" w[_Uv4M
_69\#YvCG
ivk|-C'\
Eiffel M>j)6?n`_
class HELLO_WORLD q fe#k F9
vUA,`
creation W_EN4p~J
make )$i3j
1[;
feature D.}b<kDD
make is lX7^LB
local &3. 8i%
io:BASIC_IO :'=C/AL
do i=UJ*c
!!io }mK_d9d x
io.put_string("%N Hello, world!") 4#uoPkLK
end -- make o%iTYR:x
end -- class HELLO_WORLD !{LwX Kf
PGDlSB^O
R&A.F+Zgt
Erlang b/`'?|
C
-module(hello). j|9 2
g
-export([hello_world/0]). I1jF`xQ&0
Q[^d{e*l
hello_world() -> io:fwrite("Hello, World!\n"). bx>D
xcA`W|M
zrM|8Cu
Forth im"v75 tc
." Hello, world!" CR I`l<}M
hGLBFe#3
dX*PR3I-3
Fortran !k)
?H*
^@
WRITE(*,10) :gn!3P}p?
10 FORMAT('Hello, World!') Qp}<8/BM\
STOP B'yrXa|P
END 4P5wEqU.<
5Ml}m
k,J?L-F
HTML 4{&
<HTML> UWp(3FQ
<HEAD> K[H$qJmPX
<TITLE> Hello World! </TITLE> Hl51R"8o
</HEAD> R !HL+
<BODY> z#b6 aP
<p>Hello World!</p> H^~!t{\
</BODY> KAGq\7
</HTML> ~?FKww|_*J
e"Z~%,^A
T^ -RP
HQ9+ x.I-z@\E
H $=
gv
d>f5Tl\E
~rD* Y.
INTERCAL
I`7[0jA~
PLEASE DO ,1 <- #13 MLl:)W*
DO ,1 SUB #1 <- #238 pmZr<xs
DO ,1 SUB #2 <- #112 xfilxd
DO ,1 SUB #3 <- #112 d?JVB
DO ,1 SUB #4 <- #0 1x]G/I*
DO ,1 SUB #5 <- #64 {.AFg/Z
DO ,1 SUB #6 <- #238 ygHNAQG~
DO ,1 SUB #7 <- #26 &f$jpIyVX
DO ,1 SUB #8 <- #248 \W4SZR%u
DO ,1 SUB #9 <- #168 OWU]gh@r
DO ,1 SUB #10 <- #24 }0
Z3Lrv
DO ,1 SUB #11 <- #16 ;XjKWM;
DO ,1 SUB #12 <- #158 e>/PW&Z8Z
DO ,1 SUB #13 <- #52 wp$=lU{B
PLEASE READ OUT ,1 G 7u85cie
PLEASE GIVE UP h4U .wk
hM-qC|!
]GJskBm
Java MEE]6nU
public class Hello Mppb34y
{ y3vOb , 4
public static void main(String[] args) SRMy#j-
{ B; ~T|ex u
System.out.println("Hello, world!"); z[B7k%}
} YS9| J=!~
} D .E>Y
{"s8X(#_sC
1cPi>?R:
JSP Z|u_DaSrr|
<% |e!Sm{#!
out.print("Hello, world!"); r(RJ&