“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。 f4r)g2Zb[
8u4Fag Q,
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》。 Jyo(Etp
`/L D:R
以下是用不同语言写成的Hello World程序的几个例子: gWpG-RL0
Ada _"c:Z !L
with Ada.Text_Io; use Ada.Text_Io; qhqqCVrsW
procedure Hello is i :Sih"=
begin JWo).
Put_Line ("Hello, world!"); ~sbn"OS+
end Hello; );oE^3]f
`}|$eF&
fi;00>y
汇编语言 4]mAV\1
]gG&X3jaKq
x86 CPU,DOS,TASM J\c\Ar:
MODEL SMALL !;h`J:dN
IDEAL /w2jlu}yt
STACK 100H >^ijj`{d
SWPb=[WEz
DATASEG 7o4B1YD
HW DB 'Hello, world!$' APM!xX=N
RI#o9d"x}
CODESEG p~NFiZ,
MOV AX, @data rugR>&mea
MOV DS, AX g]Fm%iy
MOV DX, OFFSET HW L|N[.V9
MOV AH, 09H !R@s+5P)U
INT 21H ~fR-cXj"
MOV AX, 4C00H Bl!R
bh\
INT 21H K6M_b?XekA
END mqk tM6
\YrvH
h&j9'
x86 CPU,GNU/Linux,NASM c3q @]|aI
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Xw_6SR9C
;Enter this into "hello.asm" then type: b5.L== >
;"nasm -f elf hello.asm" _yP02a^2
;"ld hello.o -o hello" Mv#\+|p 1x
;"./hello" fZF.eRP'
S1G3xY$0
section .data ;data section declaration /Vy,6:$H3
msg db 'Hello World!',0AH nMU[S+
len equ $-msg ;string length 0D:e P``
BOf)27)
section .text ;code section declaration UVj1nom
global _start ;entry point (start of execution) PuoN<9 #
_start: mov edx,len ;string length q;#:nf"
mov ecx,msg ;string start ; 6*Ag#Z
mov ebx,1 ;file handle: stdout
fgE Mn;
mov eax,4 ;sys_write 3P[u>xE
int 80h ;kernel system call fw+ VR.#2H
7R5!(g
mov ebx,0 ;return value kV:C=MLI
mov eax,1 ;sys_exit 'Bb@K[=s
int 80h ;kernel system call k}$k6Sr"
n9x&Ws;
]/y69ou
x86 CPU,Windows,MASM32 Y:'#jY*V
.386 Cv;\cI"&
.model flat,stdcall ("-`Y'"K
option casemap:none StWF66u34&
;Include 文件定义 IWD21lS
include windows.inc +KKx\m*
include user32.inc !-Br?
includelib user32.lib =as\Tp#d
include kernel32.inc .,7ZDO9{
includelib kernel32.lib ?)V}_%fVv
;数据段 DA-W =Cc
.data Zk#?.z}
szCaption db 'A MessageBox!',0 |y~un9j+
szText db 'Hello,world!',0 GYM6 `
;代码段 PZsq9;P$
.code _z(ydL*
start: &6}] v:
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK .e8S^lSl
invoke ExitProcess,NULL qtLXdSc
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5xF R7%_&
end start '-k~qQk)6
{P>%l\?
Gaxa~?ek
AWK >iIUS
BEGIN { print "Hello, world!" } Up|>)WFw"
;UB$Uqs6
*)H&n>"e
BASIC )ls<"WTC.
传统版BASIC(例如GWBASIC): \r+8}8
%B{NH~
10 PRINT "Hello, world!" sBfPhBT|
20 END uRu)iBd D
5{uK;Vxse
或在提示符输入: b+`mh
rt7]~W-
?"Hello, world!":END 6}EC)j;Fw
Q]]5\C.
现代版BASIC(例如Quick BASIC): SWGD(]}uz
&^W91C?<6
Print "Hello, world!" umo@JWr
&QL!Y{=Y6
以下的语句在Quick BASIC中同样有效: ugI9rxT]Kv
T)NnWEB
? "Hello,world!" }7H8Y}m
&]? X"K
L9=D,C~
BCPL :W\xZ
GET "LIBHDR" *4tJ|m6"Y6
u< ,c
LET START () BE D/&^Y'|T
$( W l+[{#
WRITES ("Hello, world!*N") NHCdf*
$) Aey*n=V4#F
'`*{ig
#*<*|AwoW|
Befunge {G
D<s))
"!dlrow olleH">v $`emP
Hel
, Hi 1@
^_@ 07_ym\N
<6s?M1J
TFWx(}1
Brainfuck W5_:Q@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
1px8af]
+++++++++++++++.>.+++.------.--------.>+.>. -U?Udmov
R{5xb
eL-9fld/n
C &O