“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。 NUNn[c
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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》。 {7~ $$AR(
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以下是用不同语言写成的Hello World程序的几个例子: $Ex 9
Ada zf;[nz
with Ada.Text_Io; use Ada.Text_Io; ONe!'a0
procedure Hello is `0G.Y
begin [Fj#7VZK
Put_Line ("Hello, world!"); >8fz ?A
end Hello; L9YwOSb.
k| cI!
2=,Sz1`t
汇编语言 yjFQk,A
2:5gMt
x86 CPU,DOS,TASM \^( vlcy
MODEL SMALL 7 KdM>1!
IDEAL Q|H cg|
STACK 100H ZO0]+Ko
E+c3KqM
DATASEG z&vms
HW DB 'Hello, world!$' Qu>zO !x
rn5g+%jX*
CODESEG n]fbV/ x
MOV AX, @data ]GRq
MOV DS, AX DUliU8B}\
MOV DX, OFFSET HW -r'seb5
MOV AH, 09H ~S_IU">E
INT 21H (cA|N0
MOV AX, 4C00H &?Z)V-1H
INT 21H 2GKU9cV*`
END -hR\Y2?
;I))gY-n
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x86 CPU,GNU/Linux,NASM -GWzMBS S
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). _,0!ZP-
;Enter this into "hello.asm" then type: @N_H]6z4
;"nasm -f elf hello.asm" od's1'cR
;"ld hello.o -o hello" x)wt.T?eL
;"./hello" ~)8i5p;P/k
|Ge/|;.v`
section .data ;data section declaration 3a)Q:#okD
msg db 'Hello World!',0AH /FV6lR!0^
len equ $-msg ;string length xPJJ
!mY
nK'8Mo
section .text ;code section declaration %+B-Z/1}
global _start ;entry point (start of execution) r~fl=2>yQ
_start: mov edx,len ;string length 9}0Jc(B/x
mov ecx,msg ;string start "/Q(UV<d
mov ebx,1 ;file handle: stdout mS&\m#s<
mov eax,4 ;sys_write I_I;.Ik
int 80h ;kernel system call lnSE+YJ>
aq \TO?
mov ebx,0 ;return value @wgGnb)
mov eax,1 ;sys_exit mL5f_Fb+
int 80h ;kernel system call wR+`("2{r
BOQV X&g%
RkP|_Bf8)
x86 CPU,Windows,MASM32 $5CY<,f
.386 DSZhl-uGM
.model flat,stdcall AbI*/|sY
option casemap:none 4x?u5L
9o
;Include 文件定义 !3Z|!JY
include windows.inc L\b_,'I
include user32.inc A'-YwbY
includelib user32.lib `[:1!I.}-
include kernel32.inc )bU")
includelib kernel32.lib fvMhq:Bu
;数据段 KP-z
.data IeI%X\G
szCaption db 'A MessageBox!',0 NWwtq&pz2
szText db 'Hello,world!',0 0Ilvr]1a4
;代码段 [Q_|6Di
.code (IHBib "
start: il%tu<E#J~
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !;C(pnE
invoke ExitProcess,NULL *"sDaN0@R
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ,vw`YKg
end start gL"Q.ybA
Eq;frnw>q
"(&`muIc
AWK bK%tQeT
BEGIN { print "Hello, world!" } KBHKcFk
t\d;}@bl
M]TVaN$v#
BASIC @5V Z
传统版BASIC(例如GWBASIC): uOqDJM'RM
vS__*}^
10 PRINT "Hello, world!" tU/NwA"
20 END a(T4WDl^
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或在提示符输入: 6-}e-H
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