“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。 +c#:;&Gs
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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》。 betN-n-
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以下是用不同语言写成的Hello World程序的几个例子: K[Bq,nPo
Ada pZp|F
with Ada.Text_Io; use Ada.Text_Io; qW[p .jN
procedure Hello is ]C^D5(t/cd
begin q1a}o%
Put_Line ("Hello, world!"); #<|5<U
end Hello; I`w1IIY?m
!4d6wp"
J;4x-R$W
汇编语言 L+2!Sc,>
pvM;2
x86 CPU,DOS,TASM :L<$O7
MODEL SMALL i|+ EC_^<
IDEAL 8`}(N^=}
STACK 100H Z\6&5r=
-=,%9r
DATASEG [?$ZB),L8
HW DB 'Hello, world!$' 0 ;kcSz
iaBy/!i
CODESEG 2MwRjh_
MOV AX, @data c(Zar&z,E
MOV DS, AX ]bCeJE.+)
MOV DX, OFFSET HW c n#JO^8
MOV AH, 09H jV)!9+H#
INT 21H B~oSKM%8R
MOV AX, 4C00H HVaWv ].
INT 21H 9k =-8@G9
END ;V]EF
WLGx=
;
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x86 CPU,GNU/Linux,NASM nB2AmS
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). |1J=wp)#
;Enter this into "hello.asm" then type: +RS>#zd/=
;"nasm -f elf hello.asm" Q>[*Y/`I
;"ld hello.o -o hello" i>6SY83B}
;"./hello" rks+\e}^Z
T5_z^7d
section .data ;data section declaration qR0V\OtgY~
msg db 'Hello World!',0AH -C.x;@!k
len equ $-msg ;string length qp
(ng8%c
0/P!rH9
section .text ;code section declaration iOz<n
z
global _start ;entry point (start of execution) yo*c& >
_start: mov edx,len ;string length MN\/F4Io
mov ecx,msg ;string start g/,fjM_
mov ebx,1 ;file handle: stdout 33x3zEUt6
mov eax,4 ;sys_write HpXMPHd
int 80h ;kernel system call A3ad9?LR[R
FSv')`}
mov ebx,0 ;return value 7cin?Z1
mov eax,1 ;sys_exit yZ3/Ia>,
int 80h ;kernel system call /=Bz[O
<y5V],-U
X.<_TBos|
x86 CPU,Windows,MASM32 b2c% 0C
.386 Ry*NRP;
.model flat,stdcall -}|GkTM
option casemap:none |qbCmsY5/
;Include 文件定义 b9%}<w
include windows.inc 6ae
include user32.inc ,t5X'sY L
includelib user32.lib YAnt}]u!"
include kernel32.inc M iIH&z
includelib kernel32.lib ;:1d<Q|
;数据段 avxI\twAU
.data "Q9S<O8)
szCaption db 'A MessageBox!',0 NhQIpzL)
szText db 'Hello,world!',0 b $x<7l5C
;代码段 @
fm\
H
.code fVv#|
start: }CZ,WJz=
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK UN_f2
invoke ExitProcess,NULL Gxfw!aF~
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TN3, \qgV
end start T.="a2iS2
hkSpG{;7
K[)N/Q
AWK YfUdpa0
BEGIN { print "Hello, world!" } m! &bK5+*
Kv"e\
E
b1{~j]"$L
BASIC +(3"XYh
传统版BASIC(例如GWBASIC): ; iQ@wOL]
0?l|A1I%
10 PRINT "Hello, world!" Y9~;6fg
20 END k9UmTvX
pWH8ex+
或在提示符输入: j~c7nWfX
d$)'?Sf]h
?"Hello, world!":END [^ck;4q
!OM9aITv[
现代版BASIC(例如Quick BASIC): \lHi=}0
="
K;3a`GI
Print "Hello, world!" Pa2HFy2
~jAOGo/&6
以下的语句在Quick BASIC中同样有效: =BY)>0?z
qT#+DDEAL
? "Hello,world!" f|Kd{ $VO
65AXUTg
U,)Ngnd
BCPL _v4TyJ
GET "LIBHDR" k\_>/)g
W]5kM~Q@
LET START () BE 5)V]qV$
$( evsH>hE^
WRITES ("Hello, world!*N") C- ]H+p
$) q]:+0~cz
n"Ec %n
l)D18
Befunge Y{Kpopst
"!dlrow olleH">v <