“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。 |7}CQU
]sGHG^I6
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》。 H03jDM8Q
&ZX{R#[L
以下是用不同语言写成的Hello World程序的几个例子: 8kIR y
Ada =n'
4?W@
with Ada.Text_Io; use Ada.Text_Io; ^-[ ?#]
procedure Hello is bLd#xXl
begin X0M1(BJgGo
Put_Line ("Hello, world!"); YcN!T"wJ@
end Hello; C,pJ`:P
'^FGc
nE^Qy=iE
汇编语言
u*#ZXW
Hw-Z
x86 CPU,DOS,TASM !k/Pv\j/R
MODEL SMALL Kbb78S30
IDEAL P b]3&!a
STACK 100H e4z1`YLsG
+5&wOgx
DATASEG k!KDWb
HW DB 'Hello, world!$' -~QHqU.
Gsc\/4Wx
CODESEG Z+StB15
MOV AX, @data zWb4([P;
MOV DS, AX Xj5~%DZp
MOV DX, OFFSET HW ~~6^Sh60g
MOV AH, 09H yGsz2T;w
INT 21H B-T/V-c7
MOV AX, 4C00H "n=vN<8(o
INT 21H V2<?ol
END Zb134b'
jOyvDY9\
j$TwL;
x86 CPU,GNU/Linux,NASM ]d]JXt?)i
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). N?m0USu*
;Enter this into "hello.asm" then type: if]Noe
;"nasm -f elf hello.asm" 4L73]3&
;"ld hello.o -o hello" bug
Ot7
;"./hello" -Z?Vd!H:
bQZ*r{g
section .data ;data section declaration QZ?=M@|f
msg db 'Hello World!',0AH W(Uu@^
len equ $-msg ;string length 4#'("#R
]Y| 9?9d
section .text ;code section declaration s #S%#LM
global _start ;entry point (start of execution) vc]cNz:mQ
_start: mov edx,len ;string length *\o/q[
mov ecx,msg ;string start 1<h>B:
mov ebx,1 ;file handle: stdout fI7j):h;
mov eax,4 ;sys_write p*8-W(u)
int 80h ;kernel system call k,uK6$Z
q;:6_Qr
mov ebx,0 ;return value 2EK%N'H
mov eax,1 ;sys_exit $
A9%UhV
int 80h ;kernel system call @YH+cG|
nWvuaQ0}
,=
&B28Qe)
x86 CPU,Windows,MASM32 IB`>'~s&A
.386 7lo|dg80
.model flat,stdcall QERU5|.wc
option casemap:none F>X-w+b4r
;Include 文件定义 "sgjWo6
include windows.inc P/ oXDI8
include user32.inc rO:u6."_
includelib user32.lib %,iIpYx
include kernel32.inc 62>zt2=
includelib kernel32.lib P\&! ]
;数据段 !8@*F
.data a@pz*e
szCaption db 'A MessageBox!',0 )kJH5/
szText db 'Hello,world!',0 &
``d
;代码段 l6u&5[C
.code D)brPMS:o
start: m"9XT)N
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK WpLZQ6wH
invoke ExitProcess,NULL u<n`x6gL
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> AC.A'|"]i
end start "aF8l<1xn
1,V`8 [
Zh/Uu6
AWK e62Dx#IY
BEGIN { print "Hello, world!" } %G@5!|J
6st^4S5
NA.1QQ;e
BASIC 6UE(f@
传统版BASIC(例如GWBASIC): TFepxF
CVi`bO 4\
10 PRINT "Hello, world!"
YOAn4]j
20 END c:l]=O
sK 2
e&
或在提示符输入: 8:.nEo'
Q#Y k?Kv~
?"Hello, world!":END WM)F0@"
4{qB X?
现代版BASIC(例如Quick BASIC): i\H+X
(Bo bB]~a
Print "Hello, world!" ;p ]y)3
=_[Z W
以下的语句在Quick BASIC中同样有效: ntP|\E
-~4+w
? "Hello,world!" w^1Fi8+
3qQUpm+
= zl=SLe
BCPL ?R5'#|EyX
GET "LIBHDR" )n=ARDd^e
?_`0G/xl
LET START () BE LjdYsai-
$( kHJ96G
WRITES ("Hello, world!*N") !eJCM`cp
$) ,5|d3dJS
#'hLb
a9~"3y
Befunge s^T+5E&}
"!dlrow olleH">v somfv$'B
, * \HRw +cL
^_@ A7P`lJgv
{5%/ T,
s~},y]YV
Brainfuck A.Bk/N1G
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< +@VYs*&&
+++++++++++++++.>.+++.------.--------.>+.>. nB5Am^bP
wE).>
x"(9II*
C T ^JuZG
#include <stdio.h> ^t[HoFRa
+dkS/b
int main(void) ?G?gy2
{ l
oqvi
printf("Hello, world!\n"); Gowp
<9 F
return 0; a-n4:QT
} D{'#er
&HM-g7|C0E
4%*hGh=
C++ /!Z^Y
#include <iostream> eFTX6XB:i
6(sIYZ2yq
int main() S2~@nhO`U(
{ }iIbcA
std::cout << "Hello, world!" << std::endl; `eRLc}aP2
return 0; J<JBdk
} )'q%2%Ak
KIL18$3J
|)@N-f:E
C++/CLI -PAF p3w\y
int main() gY`Nr!O
{ U '[?9/T
System::Console::WriteLine("Hello, world!"); 1h"_[`L'
} 8o)L,{yl
wAbp3h X
.F0]6#(
C# (C Sharp) #B\=Aa`*
class HelloWorldApp >Csbjf6
{ ^Y^"'"
public static void Main() YDiN^q7
{ {@M14)-x>_
System.Console.WriteLine("Hello, world!"); z^sST
} ,m07p~,V
} S 2$5!(P
iUr xJh
dDKqq(9(`
COBOL 8U.$FMx :
IDENTIFICATION DIVISION. za,2r^
PROGRAM-ID. HELLO-WORLD. Nm8w/Q5D`
/BH.>R4`A
ENVIRONMENT DIVISION. ~,}s(`~
{Iy7.c8S
DATA DIVISION. ^i<}]c_|f
b?kPN:U#N/
PROCEDURE DIVISION. ]5|z3<K^
DISPLAY "Hello, world!". Goj4`Hc
STOP RUN. p27p~b&
|*Ot/TvG
\Tq"mw9P
Common Lisp kqB\xlS7k
(format t "Hello world!~%") "@/ba!L+
]Sta]}VQ
Bt>}LLBS2
DOS批处理 DY><qk
@echo off =aow
d4t
echo "Hello, world!" oA3d^%(c
Mr6E/7g%
a@|.;#FF
Eiffel \;
bWh
class HELLO_WORLD g'G8 3F
3kLOoL?
creation Kp_jy.e7&
make }(=ml7 )v
feature GqjO>v fy
make is "d?f:x3v^
local 7b.U!Ju
io:BASIC_IO `=!p$hg($
do ez0 \bym
!!io >=!AL,:
io.put_string("%N Hello, world!") rh $1-Y
end -- make 6=>7M
b$
end -- class HELLO_WORLD ,o&<WMD
96W4c]NT
md6*c./Z
Erlang tL8't]M,
-module(hello). g)M#{"H
-export([hello_world/0]). P$h;SK
-fM1$/]
hello_world() -> io:fwrite("Hello, World!\n"). }W
"(cYN_
v:P!(`sF
i$#,XFFp~
Forth DS
1JF
." Hello, world!" CR EW5]!%
x_ySf!ih
|p'i,.(c_W
Fortran K%<GU1]-]
WRITE(*,10) 4? {*(
10 FORMAT('Hello, World!') -~'kP /E^
STOP bD@@tGr;W
END Orc>.~+f%A
{@\/a
2$ VTu+
HTML Wy)('EM
<HTML> )tPl<lb
<HEAD> ?W<cB`J
<TITLE> Hello World! </TITLE> kt<@H11
</HEAD> #! @m y
<BODY> Ij$)RSPtH
<p>Hello World!</p> ]xB6cPdLu
</BODY> a&:>Ped"
</HTML> rHo6iJj
)GCLK<,swu
ZX]A )5G
HQ9+ -$tCF >,
H F=5kF/}x-z
Ko-QR(
tz8t9lb[
INTERCAL q5gP~*?
PLEASE DO ,1 <- #13 coO.kTO;
DO ,1 SUB #1 <- #238 7X:hIl
DO ,1 SUB #2 <- #112 ,A?v,Fs>O[
DO ,1 SUB #3 <- #112 7n>|D^
DO ,1 SUB #4 <- #0 d:3= 1x
DO ,1 SUB #5 <- #64 <