“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。 g<.Is
V
Y|Gp\
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》。 _N^w5EBC]
)Se$N6u-
以下是用不同语言写成的Hello World程序的几个例子: (tg9"C
Ada CEc(2q+%i
with Ada.Text_Io; use Ada.Text_Io; =r7!QXPH}
procedure Hello is *qk7e[IP
begin ThI}~$Y
Put_Line ("Hello, world!"); wL="p) TO.
end Hello; Mb 4"bDBsl
>Bf3X&uS
yV\%K6d|3&
汇编语言 P~=yTW
%'2.9dB
x86 CPU,DOS,TASM w]{c*4o
MODEL SMALL S_Wq`I@b
IDEAL :=ek~s.UV
STACK 100H 4^bt~{}
vJ^~J2#5
DATASEG C)EP;5k'!\
HW DB 'Hello, world!$' BOG.[?yx
TPk?MeVy%W
CODESEG _OuNX.yrG
MOV AX, @data -8Mb~Hfl0
MOV DS, AX PRaVe,5a
MOV DX, OFFSET HW "IT7.!=@9
MOV AH, 09H B#jnM~fJz
INT 21H Xi[]8o
MOV AX, 4C00H 0
h!Du|?
INT 21H DlE, aYB
END |y eQz
FrXP"U}Y
Z}uY%]
x86 CPU,GNU/Linux,NASM [B)!
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Qa )+Tv
;Enter this into "hello.asm" then type: In96H`
;"nasm -f elf hello.asm" 7N[".V]c
;"ld hello.o -o hello" j2_j5Hgo
;"./hello" PD0&ep1h7G
`M6"=)twu
section .data ;data section declaration n*wQgC'vw
msg db 'Hello World!',0AH {&IB[Y6
len equ $-msg ;string length 4F#H$`:[
eb\S pdM6
section .text ;code section declaration +yWD>PY(
global _start ;entry point (start of execution) nWIZ0Nde'
_start: mov edx,len ;string length aX;>XL4
mov ecx,msg ;string start B\c_GX Uw
mov ebx,1 ;file handle: stdout )
bI.K[0^
mov eax,4 ;sys_write ZPG,o5`%
int 80h ;kernel system call xyk%\&"7
U`qC.s(L
mov ebx,0 ;return value #:gl+
mov eax,1 ;sys_exit U+x^!{[/
int 80h ;kernel system call [q2:d^_FA
S9Yzvq!(
Qq`S=:}~x
x86 CPU,Windows,MASM32 W<X3!zuKSg
.386 lK=Is
v+
.model flat,stdcall V&nB*U&s"
option casemap:none vF$(
Y/
;Include 文件定义 uS`}
include windows.inc rwLKY.J]
include user32.inc F(ydqgH~a
includelib user32.lib e+lun
-
include kernel32.inc hi!A9T3%}M
includelib kernel32.lib FE!jN-#
;数据段 8j#S+=l>
.data *pwkv7Zh
szCaption db 'A MessageBox!',0 DlUKhbo$g
szText db 'Hello,world!',0 O3o^%0
;代码段 D wJ^ W&*
.code AyO%,6p[
start: 6
H P66B
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK e^O:I
invoke ExitProcess,NULL LRu,_2"
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +s}&'V^
end start 940:NOgm
_,L_H[FN
'z"vk
AWK (2#Xa,pb
BEGIN { print "Hello, world!" } 5,gT|4|B\g
u?`{s88_mF
:1*E5pX0n
BASIC #4bT8kq
传统版BASIC(例如GWBASIC): ; R+>}6
OK80-/8HI
10 PRINT "Hello, world!" x;7l>uR
20 END IQO|)53)
jlj ge=#c2
或在提示符输入: +;~o R_p
l'(FM^8jv
?"Hello, world!":END eTp|!T
|iHMAo
现代版BASIC(例如Quick BASIC): ^_ch%3}Im
[L+*pW+$\.
Print "Hello, world!" fG'~@'P~
VG
5*17nf5
以下的语句在Quick BASIC中同样有效: rgVRF44X{
ts,r,{
? "Hello,world!" GmR3
a
P'qBqx[
(U&
BCPL `Qo37B2
GET "LIBHDR" Jo\MDyb]
&NBH'Rt
LET START () BE \+V"JIStUj
$( }8 z:L<
WRITES ("Hello, world!*N") OlCqv-B2&
$) :*KTpTa
v%qOW)].
i1uoYb?4(I
Befunge $b|LZE\bU.
"!dlrow olleH">v I.3~ctzu
, C})Dvh
^_@ 32 i6j
b$DiDm
Fy{yg]O"
Brainfuck d2UidDU5qa
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< N-upNuv
+++++++++++++++.>.+++.------.--------.>+.>. 62HA[cr&)
jlP*RX
|s!
_;6
C M]PZwW8
#include <stdio.h> gw"cXny
Hq}g1?b
int main(void) ndLEIqOY
{ i-wRwl4aEF
printf("Hello, world!\n"); N]
sbI)Z@
return 0; vm|u~Yd,s
} `6VnL)
B`-uZ9k
et+lL"&
C++ "j_iq"J
#include <iostream> IRQtA
Z V$
3`reXms*{
int main() ~k&b
{ Nx.9)MjI
std::cout << "Hello, world!" << std::endl; <=n;5hv:
return 0;
<)TIj6
} PFX,X
eWDXV-xD
anW['!T9{s
C++/CLI nCi
]6;Y
int main() vE)N6Ss
{ SEI0G_wk$
System::Console::WriteLine("Hello, world!"); x >a h,
} e^eJ!~0
!d()'N
r7W.}n*
C# (C Sharp) @;eH~3P
class HelloWorldApp tM"vIz 05
{ nqH[
y0
public static void Main() t/t6o&
{ \YzKEYx+
System.Console.WriteLine("Hello, world!"); vy~6]hH
} (5jKUQ8Q>
} x,^-a
`
1+*-g^r
~:JAWs$\V
COBOL {oY"CZ2
IDENTIFICATION DIVISION. TI3xt-/
PROGRAM-ID. HELLO-WORLD. PJZ;wqTD_
XcoX8R%U
ENVIRONMENT DIVISION. $Zyuhji^
T2rwK2
DATA DIVISION. aiX&`
z+.G>0M
PROCEDURE DIVISION. CfW#Wk:8J
DISPLAY "Hello, world!". sBZn0h@
STOP RUN. /b
#w.>e
4Vi*Qa_,y
#"6l+}
Common Lisp TFb7P/g
(format t "Hello world!~%") 5*2hTM!
@VP/kut
?&0CEfa?
DOS批处理 10zM8<bl
@echo off XwEMF5[
echo "Hello, world!" sRT5i9TQ
BD]J/o
s@~3L
Eiffel agfDx^,
class HELLO_WORLD H$ nzyooh
7Q{&L#;
creation vULDKJNHX
make G0:<#?<5
feature aT2%Az@j
make is 4;~xRg;u&*
local MMjewGxe
io:BASIC_IO P}AwE,&Q
do %62|dhl6
!!io
LT{g^g
io.put_string("%N Hello, world!") #vK99S2
end -- make I[Bp}6G
end -- class HELLO_WORLD ^Vth;!o
-U>)B
RoHX0
Erlang Kc]
GE#~g
-module(hello). $Rze[3
-export([hello_world/0]). zz3{+1w]
d^?e*USh
hello_world() -> io:fwrite("Hello, World!\n"). %m lH
|C./gdq
_Iy)p{y
Forth um PN=0u6
." Hello, world!" CR Zu#^a|PE*
2|!jst
a)Ht(*/B
Fortran #lFsgb
WRITE(*,10) )sIzBC
10 FORMAT('Hello, World!') lnl>!z
STOP %QDAog
END ^,'KmZm=
4t*VI<=<[
kazgI>"Q8
HTML ]S(nA!]
<HTML> "JF
<HEAD> \o,et9zDJ3
<TITLE> Hello World! </TITLE> J'#o6Ud
</HEAD> (8S+-k?
<BODY> P5XUzLV
L
<p>Hello World!</p> V:D?i#%,z
</BODY> wMm+E "}W
</HTML> 2MXg)GBcU>
h/aG."U
=AK6^v&on
HQ9+ 0a?[@ -Sz
H 5 a&a-(
S2I{?y&K
H-&
ktQWK3
INTERCAL S ="\ S
PLEASE DO ,1 <- #13 :d<F7`k
H
DO ,1 SUB #1 <- #238 SX?hu|g_r
DO ,1 SUB #2 <- #112 0}_1ZU
DO ,1 SUB #3 <- #112 ;cv\v(0
DO ,1 SUB #4 <- #0 1- GtZ2
DO ,1 SUB #5 <- #64 D#ED?Lqf
DO ,1 SUB #6 <- #238 '}Jq(ah(
DO ,1 SUB #7 <- #26 g>?,,y6/w
DO ,1 SUB #8 <- #248 >\Iy <M
DO ,1 SUB #9 <- #168 O,&p"K&Z
DO ,1 SUB #10 <- #24 BYI13jMH+Y
DO ,1 SUB #11 <- #16 8
=3#S'n
DO ,1 SUB #12 <- #158 d$D3iv^hyx
DO ,1 SUB #13 <- #52 tdi}P/x
PLEASE READ OUT ,1 "y .(E7 6
PLEASE GIVE UP y9GaxW*&