“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。 _H9.AI
XjL)WgQ{i
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》。 dBKL_'@@}
KErQCBeJ
以下是用不同语言写成的Hello World程序的几个例子: {;6Yi!
Ada :d v{'O
with Ada.Text_Io; use Ada.Text_Io; X\:;A {
procedure Hello is r5kKNyJ
begin uz6S7I
Put_Line ("Hello, world!"); S:IhJQ4K
end Hello; qU(,q/l
3 xSt -MA
| N%?7PZ(
汇编语言 fz[o;GTc
]o18oY(
x86 CPU,DOS,TASM #"J8]3\F
MODEL SMALL 1PD{m{
IDEAL t'e1r&^:r~
STACK 100H .tv'`
:C*7DS
DATASEG kcg{z8cd'r
HW DB 'Hello, world!$' zO BLF|L=
e5/f%4YX
CODESEG `52+.*J+%
MOV AX, @data )YE3n-~7{
MOV DS, AX P;7JK=~k
MOV DX, OFFSET HW q#RUL!WF7U
MOV AH, 09H lxIoP
INT 21H s9R#rwIc
MOV AX, 4C00H Id6H~;
INT 21H OIpkXM
END ,Jm2|WKH
jlvh'y`
iI|mFc|V
x86 CPU,GNU/Linux,NASM @]v}&j7
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). {t<E*5N]a
;Enter this into "hello.asm" then type: ~:`5Y"Av:
;"nasm -f elf hello.asm" EDQKb TaPt
;"ld hello.o -o hello" v?Z30?_&h
;"./hello" F xek#
TR;" &'#k
section .data ;data section declaration w$Zi'+&*
msg db 'Hello World!',0AH vGe];
len equ $-msg ;string length 0_F6t-
q~esxp
section .text ;code section declaration Ass :
global _start ;entry point (start of execution) 6#[
_start: mov edx,len ;string length ]S@zhQ
mov ecx,msg ;string start zSy^vM;6zf
mov ebx,1 ;file handle: stdout V
iY -&q'
mov eax,4 ;sys_write `1}WQS
int 80h ;kernel system call rC`pTN
CD}::7$
mov ebx,0 ;return value 6_Ps*Ed
mov eax,1 ;sys_exit ,%)O/{p_
int 80h ;kernel system call &8p]yo2zO
_yH{LUIj
=E6ND8l@2
x86 CPU,Windows,MASM32 +,7nsWV
.386 yx0wR
.model flat,stdcall PIk2mX/D_6
option casemap:none I5#KLZVg
;Include 文件定义 t zn1|
include windows.inc ]ySm|&aU
include user32.inc 4eFqD;
includelib user32.lib _}bs0 kIz
include kernel32.inc yvIeK6
includelib kernel32.lib G>siyUh
;数据段 $('"0 @fg
.data /b&ka&|t
szCaption db 'A MessageBox!',0 (AYzN3
?D
szText db 'Hello,world!',0 b+=@;0p*6B
;代码段 7:[u.cd
.code s#Os?Q?
start: 1SAO6Wh
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK C{{RU7iqc&
invoke ExitProcess,NULL EM2=g9y
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #VM+.75o1
end start %mqep5n(
]>vC.iYp
wh Hp}r
AWK %#go9H(K
BEGIN { print "Hello, world!" } p{@j M
FIMM\W
5#275Hyv
BASIC W;Y"J_
传统版BASIC(例如GWBASIC): rY?]p Mp
v2Ft=_*G|
10 PRINT "Hello, world!" k|hy_? *
20 END ys/U.e|)!
6Qc
*:(GE
或在提示符输入: $jkzm8{W
:@rq+wvP
?"Hello, world!":END 1k)31GEQw
83(-/y
现代版BASIC(例如Quick BASIC): 'c7'iDM
<z.Y#{p?k
Print "Hello, world!" $^TxLv
g5&ZXA
以下的语句在Quick BASIC中同样有效: 5q^5DH_;
/1y\EEc
? "Hello,world!" B~ ?R 6
L`2(u!i J
t.rlC5
k
BCPL vRhI:E)So#
GET "LIBHDR" SO|!x}GfI
R|m!*B~
LET START () BE ;S_Imf0$v
$( 2y"L&3W
WRITES ("Hello, world!*N") ]
/"!J6(e
$) q!10G
/wi*OZ7R
!We9T )e
Befunge *w#^`yeo
"!dlrow olleH">v QbJE+m5
, }j)][{i*x
^_@ zQxTPd
R@df~
S4S}go*G[
Brainfuck 8l>7=~Egp
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< >rhqhmh;W"
+++++++++++++++.>.+++.------.--------.>+.>. ' Ig:-
C6JwJYa
9oj#5Hq
C 9GX'+$R]
#include <stdio.h> oA* 88c+{f
A(D>Zh6 o@
int main(void) u?4d<%5R!
{ f8?hEa:js
printf("Hello, world!\n"); eK[9wEdn
return 0; ?vBMx _0
} H2S/!Q;K
$jg~a
RRb>]oD
C++ ,. HS )<B
#include <iostream> |jI|},I
gJH^f3
int main() cd&sAK"
{ 8kf5u#,'
std::cout << "Hello, world!" << std::endl; V8O-|7H$v
return 0; l3Qt_I)L
} V. e30u5
5yL\@7u`
**CGkL
C++/CLI 03n+kh
int main() \ nUJ)w
{ 3dx.%~c
System::Console::WriteLine("Hello, world!"); WCYVon bg"
} *qA:%m3
<lZVEg
YJ!jdE}
C# (C Sharp) Yc:>Yzj(z
class HelloWorldApp 7 \AoMk}
{ [Mk:Zz%
public static void Main()
/s~BE ,su
{ Z817f]l
System.Console.WriteLine("Hello, world!"); WR9-HPF
} }vb.>hy
} z%;_h-
lMmP]{.>$
7/HX!y{WP
COBOL v]'\]U^
IDENTIFICATION DIVISION. uovSe4q5q
PROGRAM-ID. HELLO-WORLD. ~#dfZa&
N(kSE^skOa
ENVIRONMENT DIVISION. ?X+PNw|pf
C1uV7t*\
DATA DIVISION. {wl7&25
-bgj<4R$p
PROCEDURE DIVISION. G '%ZPh89
DISPLAY "Hello, world!". L@S1C=-/
STOP RUN. R].xT-1
n0FzDQt26
><C9PS@
Common Lisp _n0NE0
(format t "Hello world!~%") QuBA'4ht
b"2_EnE}1
Jim5Ul
DOS批处理 ;*{Ls#
@echo off SAU` u]E
echo "Hello, world!" NE><(02qW
` Nv1sA#C
F;MACu;x
Eiffel kZ0z]Y
class HELLO_WORLD ,ZZ5A;)
h05BZrE
creation f.c2AY~5[
make B@ >t$jK
feature A>frf[fAW
make is *|^||
bd
local U1D;O}z~
io:BASIC_IO Z-L }"~
do ~ %Ij5PD
!!io ,=[r6k<
io.put_string("%N Hello, world!") y:Ag mr,S
end -- make JF'<""
end -- class HELLO_WORLD tqpSir
I :8s 3;
/A-VT
Erlang P\h1%a/D
-module(hello). k_nQmU>
-export([hello_world/0]). 7e[&hea
R*H-QH/H1
hello_world() -> io:fwrite("Hello, World!\n"). &srD7v9M8
hb(H-`16
vcZ"4%w
Forth Y=/;7T
." Hello, world!" CR 4m%Yck{R
s6D Pb_,
9fYof
Fortran +1K=]#a
WRITE(*,10) !FQS9SoO9
10 FORMAT('Hello, World!') \1eWI
STOP dFZh1*1
END !{ !(yP_
PB#EU9
H|3CZ=U?
HTML Y2|c;1~5$
<HTML> sfp.> bMj
<HEAD>
QrLXAK\5
<TITLE> Hello World! </TITLE> pS8`OBenA
</HEAD> @>F`;'_*z
<BODY> !>fi3#Fi
<p>Hello World!</p> WHr:M/qD
</BODY> v?o("I[ C
</HTML> aN';_tGvK
} :T}N]
^Yo2 R
HQ9+ >+%p}l:<\
H ?{~. }Vn
p3B_NsXVZ
K,!f7KKo
INTERCAL [9Hrpo]tU:
PLEASE DO ,1 <- #13 o}Zl/&(
DO ,1 SUB #1 <- #238 u"(2Xer
DO ,1 SUB #2 <- #112 p+;x&h)[l
DO ,1 SUB #3 <- #112 b(A;mt#N
DO ,1 SUB #4 <- #0 -AXMT3p=1
DO ,1 SUB #5 <- #64 ]_hXg*?
DO ,1 SUB #6 <- #238 1#x@
DO ,1 SUB #7 <- #26 "R[6Q ^vw
DO ,1 SUB #8 <- #248 7??j}ob>
DO ,1 SUB #9 <- #168 E6xWo)`%5s
DO ,1 SUB #10 <- #24 hOe$h,E']
DO ,1 SUB #11 <- #16 q X]ej2
DO ,1 SUB #12 <- #158 iJk/fvi
DO ,1 SUB #13 <- #52 !6_tdZ
PLEASE READ OUT ,1 zTze%
PLEASE GIVE UP <7oZV^nd *
8u Z4[
C7!=LiK}
Java ;zo?o t/
public class Hello HqA3.<=F,
{ [[Usrbf
public static void main(String[] args) 9!wm`'G8
{ ?Q6ZZQ~
System.out.println("Hello, world!"); }9?fb[]
} BgwZZ<B
} pXe]hnY
tmC9p6%
&uJ7[m19z
JSP _LLE~nUK"/
<% yF1^/y!@
out.print("Hello, world!"); WhL1OG
%> a; 0$fRy
L\^H#:?t
@"`{Sh`Y$
MIXAL 3M{b:|3/q
TERM EQU 19 the MIX console device number Y0nuwX*{
ORIG 1000 start address fQ,(,^!;
START OUT MSG(TERM) output data at address MSG 9'!I6;M
HLT halt execution pl.=u0 *
MSG ALF "MIXAL" <~Tfi*^+
ALF " HELL" !7anJl
ALF "O WOR" MM Nz2DEy[
ALF "LD " D"n
3If%
END START end of the program dUpOg{I.x
1I U*:Z;Rz
Alb5#tm:m
Nuva I[ I]C9D
<..直接输出..> zyFbu=d|O:
Hello, world! 7033#@_
s}":lXkrw
<..或者..> b"z9Dp v
1H,hw
<. P
C
// 不带换行 ,6a }l;lv
? "Hello, world!" d*<