“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。
P[l?
f1Ak0s,zrc
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》。 rQW&$M
OZHQnvZ
以下是用不同语言写成的Hello World程序的几个例子: 3Pb]Of#
Ada q.
%[!O
with Ada.Text_Io; use Ada.Text_Io; ,mu=#}a@}
procedure Hello is rPk=9I
begin c<'Pt4LY
Put_Line ("Hello, world!"); ;:w?&4
end Hello; **zh>Y}6
UR/lM,N;
tkN5|95
汇编语言 ypoJ4EZ(
w(sD}YA)
x86 CPU,DOS,TASM `M
"O #
MODEL SMALL fvW7a8k3
IDEAL kW'xuZ&
STACK 100H gC}r$ZB(
:/Zy=F9:
DATASEG E(5'vr0
HW DB 'Hello, world!$' Zcaec#
1:.0^?Gz
CODESEG l9U^[;D
MOV AX, @data 8P wobln
MOV DS, AX sknta0^=2
MOV DX, OFFSET HW l?+67cQLA
MOV AH, 09H \]uo^@$bm
INT 21H i7qG5U
MOV AX, 4C00H tMWDKatb
INT 21H t%<@k)hd~G
END i+I%]
|@J:A!
``~7z;E%@
x86 CPU,GNU/Linux,NASM RCFocOOn
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). [SluYmW
;Enter this into "hello.asm" then type: 6cCC+*V{
;"nasm -f elf hello.asm" ryd*Ha">I
;"ld hello.o -o hello" hf2Q;n&V
;"./hello" @`qhQ
%p5%Fs`sd
section .data ;data section declaration &cty&(2p
msg db 'Hello World!',0AH ail%#E8
len equ $-msg ;string length g~5$X{
~ccwu
section .text ;code section declaration &zl=}xeA
global _start ;entry point (start of execution) /V66P@[>
_start: mov edx,len ;string length UjNe0jt%s
mov ecx,msg ;string start %R%e0|a
mov ebx,1 ;file handle: stdout Vb0((c%&
mov eax,4 ;sys_write _z:7Dj#
int 80h ;kernel system call kPN:m ow
/{eD##vhP
mov ebx,0 ;return value B~/:["zTh&
mov eax,1 ;sys_exit 3BBw:)V
int 80h ;kernel system call Ae&470
$^ \8-k "
$wL
zaZL|
x86 CPU,Windows,MASM32 b?6-lYE>L
.386 }O_kbPNw
.model flat,stdcall |sf&t
option casemap:none +,` Cv_O
;Include 文件定义 ;^waUJ\Z
include windows.inc t5r,3x!E
include user32.inc :'*;>P
.(
includelib user32.lib Pr
|u_^
include kernel32.inc Hw 7
includelib kernel32.lib 89*txYmx
;数据段 ?:D#\4=US
.data ZT*RD2,
szCaption db 'A MessageBox!',0 Z=VAjJ;i[
szText db 'Hello,world!',0 -;5WMX6
;代码段 huj 6Ysr
.code :VP*\K/:
start: Ns ?8N":
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK A4Dj4n 0
invoke ExitProcess,NULL Wn61;kV_)
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> g_<^kg"
end start (9!$p|d*
$a^YJY^_
V6opV&
AWK [)K?e!c8
BEGIN { print "Hello, world!" } 4bV&U=
U ?vG?{A
4/6?wX
BASIC TQXp9juK
传统版BASIC(例如GWBASIC): 1C,=1bY
s&T"/4
10 PRINT "Hello, world!" T(Q(7
20 END 5](-(?k}~
8ZmU(m
或在提示符输入: N~c Y ~a
\UBTNY,
?"Hello, world!":END CC?L~/gPN
"
3ryp
A
现代版BASIC(例如Quick BASIC): r]GG9si
dD%Sbb
Print "Hello, world!" >_R,^iH"
@|3PV
以下的语句在Quick BASIC中同样有效: :Q~Rb<']{x
lB7 V4
? "Hello,world!" BU3VXnqT[
qfRsp
rRI"
5somoV B
BCPL :Nry |
GET "LIBHDR" 2P&KU%D)0s
adi^*7Q] )
LET START () BE :`Nh}Ka0
$( L[Z
SgRTu
WRITES ("Hello, world!*N") ]@Gw$
$) W3AtO
bSK> p3
?^y!}(
Befunge R
4= ~
"!dlrow olleH">v OI@;ffHSW
, gb_r <j:w
^_@ AeQIsrAHE
#CRAQ#:45(
@ V_@r@A
Brainfuck .ty^ k@J|]
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< \{g;|Z1
+++++++++++++++.>.+++.------.--------.>+.>. )/32sz]~
-#TF&-
G7|CwzMg
C J83{&N2u
#include <stdio.h> `W&:*
1Tb'f^M$
int main(void) VG)Y$S8.>
{ E%+ aqA)f
printf("Hello, world!\n"); '[T#d! T
return 0; '4T]=s~N
} mN!5JZ'2
%.NOQ<@W
.aA8'/
C++ kdr?I9kwW
#include <iostream> |i/Iv
Xp_3EQl
int main() 834E
]2
{ J|'e.1v
std::cout << "Hello, world!" << std::endl; L`iC?<}
return 0; G$P|F6
} Ke5fe#
;z>?-
j
vX9B^W||x
C++/CLI ^GS,4[)H
int main() J2vaKl
{ @u4q\G\
System::Console::WriteLine("Hello, world!"); #iZ%CY\
} ``Yw-|&:Ae
\[!k`6#t7
o<pb!]1
C# (C Sharp) xs'vd:l.Pp
class HelloWorldApp );m7;}gE
{ 4mqA*c%6S
public static void Main() iJ7?6)\
{ |=xK-;qs
System.Console.WriteLine("Hello, world!"); v ?9
} t%B ,ATW
} H&yK{0H
t9Sog~:'
h_SDW %($
COBOL dHAI4Yf4U
IDENTIFICATION DIVISION. 8M"0o}wx
PROGRAM-ID. HELLO-WORLD. I_h8)W
b }^ylm
ENVIRONMENT DIVISION. s={jwI50
B\tP{}P8{
DATA DIVISION. !_ng_,J
e1
yvvi
PROCEDURE DIVISION. )`*=P}D
DISPLAY "Hello, world!". 2G(RQ\Ro*
STOP RUN. +VN&kCx)
9"jhS0M
[1 ?
Common Lisp 8}Qmhm`_j=
(format t "Hello world!~%") A-8[8J
7e`ylnP!
\dq}nOsX*
DOS批处理 "< c,I=A
@echo off {hE\ECT-
echo "Hello, world!" aj$#8l |zu
npJyVh47
Kc%GxD`
Eiffel $v6`5;#u
class HELLO_WORLD u=U.+\f5
0fpxr`
creation pc=f,
make 2,3pmb
feature 7a0kat'\
make is R)<PCe`vf
local
OH*
io:BASIC_IO y\xa<!:g
do -/7[\S
!!io 6UXDIg=
io.put_string("%N Hello, world!") C.& R,$
end -- make "s6\l~+9l
end -- class HELLO_WORLD X<j(AAHE
lV*dQwa?i
nKO4o8js{{
Erlang S
6|#9C&
-module(hello). { +$zgg
-export([hello_world/0]). Z<Pf[C
9CxFj)#5F
hello_world() -> io:fwrite("Hello, World!\n"). N1vPY]8
}1sFddGVt
):c)$$dn
Forth 4|]0%H~n6
." Hello, world!" CR z+k[HE^S
a9"1a'
Ei
Yj `P
Fortran ~kJ}Z<e
WRITE(*,10) [T<Z?
10 FORMAT('Hello, World!') ^qro0]"LD
STOP =u.jZ*u]WT
END T|L_+(M{
/4!.G#DLQ
mbS`+)1=l
HTML *MG*]\D
<HTML> y;r{0lTB
<HEAD> hbOyrjanx
<TITLE> Hello World! </TITLE> !UV1OU
</HEAD> ,*r}23
<BODY> ?uBZ"^'
<p>Hello World!</p> qTA,rr#p0
</BODY> ?c;T4@mB
</HTML> ?}tWI7KI
z5|m`$gy
h,(f3Ik0O
HQ9+ "~|;XoMU
H @N% /v*
&-hz&/A,
%^?yI
INTERCAL A@o:mZ+XN(
PLEASE DO ,1 <- #13 !SxZN d v
DO ,1 SUB #1 <- #238 UgBD|~zu
DO ,1 SUB #2 <- #112 .GM}3(1fX`
DO ,1 SUB #3 <- #112 A;'*>NS
DO ,1 SUB #4 <- #0 nz}}m^-j
DO ,1 SUB #5 <- #64 VOY#Y*)g
DO ,1 SUB #6 <- #238 J,&B
DO ,1 SUB #7 <- #26 L4x08 e
DO ,1 SUB #8 <- #248 \GFFPCi4D
DO ,1 SUB #9 <- #168 @'ln)RT,
DO ,1 SUB #10 <- #24 M;$LB@h
DO ,1 SUB #11 <- #16 ?vd_8C2B
DO ,1 SUB #12 <- #158 @8jc|X<A
DO ,1 SUB #13 <- #52 dm+}nQI\
PLEASE READ OUT ,1 R'Y=-
yF
PLEASE GIVE UP /ad]pdF
p`CVq `k
)dMXn2O
Java :9=J=G*
public class Hello D|lm,
{ Onqd2'%<
public static void main(String[] args) pVGH)6P>|
{ K5ywO8_6`
System.out.println("Hello, world!"); [&B}{6wry
} /;K?Y#mf~j
} eKT'd#o2R
\`MX\OR
+I9+L6>UR
JSP |fd}B5!c
<% ,O;+fhUJ(
out.print("Hello, world!"); xwm-)~L4T
%> zq?Iwyo
)RFE<
Qcj
(K}Md~
MIXAL #SR"Q`P
TERM EQU 19 the MIX console device number bktw?{h
ORIG 1000 start address =q4QBAW
START OUT MSG(TERM) output data at address MSG #G/
_FRo`
HLT halt execution 1q&gTv