“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。 5?f ^Rz
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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》。 jk;j2YNPw
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以下是用不同语言写成的Hello World程序的几个例子: A @i
Ada |Tv#4st
with Ada.Text_Io; use Ada.Text_Io; z<MsKD0Q
procedure Hello is 9Gvd&U
begin [*Z;\5&P
Put_Line ("Hello, world!"); = }~hWL
end Hello; (Lbbc+1m
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汇编语言 " s,1%Ltt
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x86 CPU,DOS,TASM esJ~;~[@(r
MODEL SMALL v&6-a* <Z
IDEAL
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STACK 100H CT&|QH{
b!+hH Hv:
DATASEG ` ./$&'
HW DB 'Hello, world!$' =7?4eYHC
l5~os>
CODESEG d9k0F
OR1
MOV AX, @data N:^n('U&j
MOV DS, AX kXViWOXU^
MOV DX, OFFSET HW EfqX
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MOV AH, 09H [CY9^N
INT 21H v_yw@
MOV AX, 4C00H t$` r4Lb9/
INT 21H `~cqAs}6]Q
END ___~D
dq
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x86 CPU,GNU/Linux,NASM :@yEQ#nFp
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Jx:Y-$
;Enter this into "hello.asm" then type: A@`}c,G
;"nasm -f elf hello.asm" L7l
FtX+b
;"ld hello.o -o hello" kj Jn2c:y
;"./hello" =0
#OU
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section .data ;data section declaration Fw_#N6Q
msg db 'Hello World!',0AH gM&{=WDG6
len equ $-msg ;string length :'Vf
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T9=I$@/
section .text ;code section declaration 1Yq!~8
global _start ;entry point (start of execution) X;$+,&M"
_start: mov edx,len ;string length #`^}PuQ
mov ecx,msg ;string start )+#` CIv
mov ebx,1 ;file handle: stdout ]U+LJOb
mov eax,4 ;sys_write "MeVE#O
int 80h ;kernel system call -abt:or
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mov ebx,0 ;return value KR}?H#%
mov eax,1 ;sys_exit KS+'|q<?w
int 80h ;kernel system call R*,MfV
!t"4!3
Z{*\S0^ST
x86 CPU,Windows,MASM32 & l<.X
.386 YP oSRA L
.model flat,stdcall aj='b.2)
option casemap:none &$+AXzn
;Include 文件定义 ,~U>'&M;
include windows.inc 8]c2r%J
include user32.inc n9\TO9N
includelib user32.lib G/E+L-N#`
include kernel32.inc }:zE< bK
includelib kernel32.lib p
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;数据段 l$KA)xbI
.data <)Dj9' _J
szCaption db 'A MessageBox!',0 X0HZH?V+
szText db 'Hello,world!',0 MpT8" /.]A
;代码段 Q0sI(V#
.code hgG9m[?K
start: M-VX;/&FR
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK "nynl'Ryk
invoke ExitProcess,NULL '@v\{ l
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> b/K PaNv
end start z(O Nv#}p
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AWK CO/]wS
BEGIN { print "Hello, world!" } `v!urE/gg%
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BASIC gjyYCjF
传统版BASIC(例如GWBASIC): LENq_@$
bIDj[-CDG
10 PRINT "Hello, world!" P}}* Q7P
20 END l:~/<`o
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或在提示符输入: uo9B9"&
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