“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。 >6IXuq
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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》。 #n=A)#'my
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以下是用不同语言写成的Hello World程序的几个例子: MSK'2+1T@g
Ada yAAG2c4(
with Ada.Text_Io; use Ada.Text_Io; kq>GMUl~@
procedure Hello is ](_{,P
begin ,TEuM|
Put_Line ("Hello, world!"); @W#fui<<}Y
end Hello; LSSW.Oz2L
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汇编语言 Ut]2` 8-
6zv;lx0<D&
x86 CPU,DOS,TASM amMjuyW
MODEL SMALL GKiq0*/M
IDEAL A*a7\id!y
STACK 100H Z(KmS(
qFrt^+@
DATASEG "/Om}*VhD
HW DB 'Hello, world!$' {K<uM'ww>
{>wI8
CODESEG '/ihL^^@L
MOV AX, @data I/Sv"X6E
MOV DS, AX KUF$h Er
MOV DX, OFFSET HW d3Y(SPO
MOV AH, 09H .N/GfR`0/<
INT 21H |O57N'/
MOV AX, 4C00H /8=:qIJYA
INT 21H |MR%{ZC^i
END 3R'.}^RN
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P87ld._
x86 CPU,GNU/Linux,NASM "\4]X"3<+
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `'kc|!%MUq
;Enter this into "hello.asm" then type: mm_^gQ,`
;"nasm -f elf hello.asm" n"mJEkHE
;"ld hello.o -o hello" T~s&)wD
;"./hello" {a]pF.^kf
nDyvX1]
section .data ;data section declaration =E&2 4
msg db 'Hello World!',0AH {5U1`>
len equ $-msg ;string length 'BqrJfv
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section .text ;code section declaration tp#Z@5=
global _start ;entry point (start of execution) zwMQXI'k83
_start: mov edx,len ;string length e)*mC oR
mov ecx,msg ;string start tB
GkRd!
mov ebx,1 ;file handle: stdout wTHK=n\i
mov eax,4 ;sys_write s`;0
t YG
int 80h ;kernel system call Lwp-2`%
Hr
/W6C
mov ebx,0 ;return value I0I_vu
mov eax,1 ;sys_exit ^OsA+Ea\
int 80h ;kernel system call sP9 ^IP
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6#
MhHr*!N"}
x86 CPU,Windows,MASM32 4,j4E@?pG9
.386 tDEXm^B2Sv
.model flat,stdcall 9cVn>Fb
option casemap:none EW
~*@H
;Include 文件定义 fB _4f{E
include windows.inc w}IL
8L(D
include user32.inc 4Sg<r,G
includelib user32.lib N{ : [/
include kernel32.inc +]A+!8%Z
includelib kernel32.lib iPA@<D%
;数据段 -zPm{a
.data Dm>T"4B`/
szCaption db 'A MessageBox!',0 Z"l`e0{
szText db 'Hello,world!',0 6].yRNy"
;代码段 <+<)xwOQ ]
.code lO551Y^
start: T {hyt
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ,@}W@GGP)
invoke ExitProcess,NULL :5r:I[FFy
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -;l`hRW
end start T^KCB\\<
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AWK .Ql;(Wyl
BEGIN { print "Hello, world!" } %T3j8fC{s
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BASIC '
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传统版BASIC(例如GWBASIC): lf?Z{^
{[l'S
10 PRINT "Hello, world!" F;cI0kP=>
20 END F(T=WR].o
db{NKwpj'
或在提示符输入: j%6|:o3G(
~+nS)4(
?"Hello, world!":END <'g0il
V->.|[J
现代版BASIC(例如Quick BASIC): o%vIkXw
N5:D8oWWXR
Print "Hello, world!" nvU+XCx
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以下的语句在Quick BASIC中同样有效: o@qN#Mg?>}
F@>w&A~K
? "Hello,world!" VaD:
OwNA N
#gxRTx
BCPL )v*v
GET "LIBHDR" Ln"+nKr
K?z*3^^X;
LET START () BE ~*66 3pA
$( |usnY
WRITES ("Hello, world!*N") XS}Zq4H
$) <ol$-1l#9
/.pa
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Da9* /
Befunge / e~
"!dlrow olleH">v >GdLEE'w
, 9`LU=Xv/
^_@ h#(.(d
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E'S<L|A/
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