“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。 Z:aDKAboU
Ne*I$T 5
将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 WpC@nz?
>1:s.[&
以下是用不同语言写成的Hello World程序的几个例子: )xCpQ=nS
Ada DrbjqQL+.
with Ada.Text_Io; use Ada.Text_Io; USu/Y29
procedure Hello is 5:9Ay ?
begin W]5kM~Q@
Put_Line ("Hello, world!"); *JGm
end Hello; b_ Sh#d&
l;U9dO}/[
D
h ]+HF
汇编语言 f2[z)j7
)/2* <jr
x86 CPU,DOS,TASM R?+Eo(0q,
MODEL SMALL ?
Ldw\
IDEAL 6}R^L(^M
STACK 100H lJoMJS;S]}
!.iu_xJ
DATASEG (xK=/()}q
HW DB 'Hello, world!$' aAO[Y"-:,Y
cRz7.9-<
CODESEG N J:]jd
MOV AX, @data oju/%ieh
MOV DS, AX `ea;qWy
MOV DX, OFFSET HW liFNJd`|o+
MOV AH, 09H l3n* b6
INT 21H NI=t)[\F
MOV AX, 4C00H &9PzBc
INT 21H _Pa(5-S'KR
END ^mFuZ~g;?
hU5[k/ q
EiI3$y3;
x86 CPU,GNU/Linux,NASM m\U@L+L
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). IvetQ+
;Enter this into "hello.asm" then type: kJy<vb~
;"nasm -f elf hello.asm" NWwfNb>
;"ld hello.o -o hello" n?&G>`u*
;"./hello" QpS0iUG
zF<*h~
section .data ;data section declaration 2uS&A
\
msg db 'Hello World!',0AH (rt DT
len equ $-msg ;string length {"y{V
/#9O{)
section .text ;code section declaration 1mL--m'r
global _start ;entry point (start of execution) Y[$[0
_start: mov edx,len ;string length :g'"*VXYB
mov ecx,msg ;string start W2tIt&{
mov ebx,1 ;file handle: stdout R_uA!MoLs
mov eax,4 ;sys_write 9/D+6hJ]:
int 80h ;kernel system call $q
DH
INW8Q`[F
mov ebx,0 ;return value [:a;|t
mov eax,1 ;sys_exit ?ZdHuuDN~
int 80h ;kernel system call !#3#}R.$Fl
&xr?yd
#g4X`AHB
x86 CPU,Windows,MASM32 nE]R0|4h
.386 =/.[&DG
.model flat,stdcall J\_tigd
option casemap:none #E5#{bra
;Include 文件定义 l+kI4B7--
include windows.inc P_hwa1~d
include user32.inc :Ff1Js(Z
includelib user32.lib +
R])u5c'
include kernel32.inc /QHvwaW[
includelib kernel32.lib A[XEbfDO
;数据段 e.\d7_T+
.data PAH;
+
szCaption db 'A MessageBox!',0 @s2z/h0H
szText db 'Hello,world!',0 yXc/Nl%
;代码段 +q)
^pCC
.code j?/T7a^
start: RNcHU
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK >8 t3a-/
invoke ExitProcess,NULL Wh(V?!^@5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lj@c"Yrk
end start %l,p />r
wjoxfPnf
N#C,_ k
AWK MCe=R R
BEGIN { print "Hello, world!" } *<xEM-
TTmNPp4q
h?bm1e5kE
BASIC 50l=B]M
传统版BASIC(例如GWBASIC): `t{aN|3V[
3VB{Qj
10 PRINT "Hello, world!" !(w\%$|
20 END h/V0}|b
/=lrdp!a
或在提示符输入: &0K
H00l
IBQmm(+v
?"Hello, world!":END o9<jj> R;
/AjGj*O
现代版BASIC(例如Quick BASIC): u <%,Ql
(3%NudkwT
Print "Hello, world!" #";(&|7
JdfjOlEb
以下的语句在Quick BASIC中同样有效: PZf^r
LC*@/((
? "Hello,world!" Y=x]'3}^
FoInJ(PDH
?#rDoYt/Sx
BCPL +<"sC+2
GET "LIBHDR" &( b\jyf
,l#V eC
LET START () BE zRD{"uqi
$( Av_1cvR:
WRITES ("Hello, world!*N") "DjD"?/b
$) Tr(w~et
9%$4Ux*q
@Ej{sC!0T
Befunge Cc]t*;nU_
"!dlrow olleH">v x
a7x
2]~-
, ]{0
2!
^_@ J5mMx)t@
SE;Jl[PgcL
[wjA8d.
Brainfuck U5Q `r7
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< n3g3(}Q0
+++++++++++++++.>.+++.------.--------.>+.>. S$=])^ dur
= =cAL"Z
w6qx
C !n}"D:L(
#include <stdio.h> 2Af1-z^^K
n*9)Y~
int main(void) |jU/R
{ >(|T]u](q
printf("Hello, world!\n"); -nV]%vJ$R}
return 0; =xw) [
} /U`"Xx
@@# ^G8+l
f}Mc2PQ-
C++ (VI4kRj
#include <iostream> }(hx$G^M
Eii)zo8Xd
int main() 6*lTur9ni
{ W+cmn )8
std::cout << "Hello, world!" << std::endl; }~:`9PV)Z%
return 0; NJI-8qTGI
}
ry*b"SO
^I5k+cL
AcwLs%'sx
C++/CLI ^GD"aerNr
int main() _<+!
{ JpcG5gX^B
System::Console::WriteLine("Hello, world!"); o3#qp>R
} ?rKewdGY
&_x:+{06
X"z^4?Aj+
C# (C Sharp) [O2xE037h`
class HelloWorldApp ey _3ah3x
{ S4n\<+dR<
public static void Main() $>hPB[ [
{
u<!8dQ8
System.Console.WriteLine("Hello, world!"); pi*cO
} Kyq/'9`
} [d`J2^z}
I%ivY
[i==
Tp
COBOL az*c0Z<pl
IDENTIFICATION DIVISION. Sp]"Xr)
PROGRAM-ID. HELLO-WORLD. )>QpR8
G-
V`fp%7W
ENVIRONMENT DIVISION. c$Z3P%aP'V
9{RCh9
DATA DIVISION. 66(|3D X
*P7 H=Yf&
PROCEDURE DIVISION. 5/F1|N4
DISPLAY "Hello, world!". -|bnvPmE
STOP RUN. y'((
tBWa!
0Dv r:]R
8oK*NB29
Common Lisp n`8BE9h^
(format t "Hello world!~%") 6!sC
}F!tM"X\
1xP*
DOS批处理 ~2PD%+e7]
@echo off _C2iP[YwQ{
echo "Hello, world!" Q'5]E{1<'n
B5{ wSr
Hb55RilC
Eiffel mM0VUSy
class HELLO_WORLD 8s16yuM
#Z#rOh
creation "yJFb=Xdq
make ?l/VCEZP
feature
&OQ37(<_
make is \5M1;
local \NU^Jc_k7
io:BASIC_IO :d}I`)&
do c|m*<
i
!!io h]T
io.put_string("%N Hello, world!") UR?biq
end -- make 3V=wW{;x
end -- class HELLO_WORLD ##!idcC
1[p6v4qO{
G%ytp=N
Erlang e0;0 X7
-module(hello). 2>TOCBB"
-export([hello_world/0]). %])U (
RT`.S
uN
hello_world() -> io:fwrite("Hello, World!\n"). o]/*YaB2>
#0$fZ
7"Qj(N
Forth |?A:[C#X
." Hello, world!" CR D8X~qt/
FxU a5n
9UDanj P
Fortran $ /`X7a{
WRITE(*,10) *).u:>D4
10 FORMAT('Hello, World!') M`V<`
STOP M/?eDW/
END fVf
@Ngvu
DpQ\q;
ES,T[
HTML | KtI:n4d
<HTML> 8=!uQQ
<HEAD> .fFXH
<TITLE> Hello World! </TITLE> Fz11/sKz
</HEAD> Sf*1Z~P|
<BODY> J4?i\wD:
<p>Hello World!</p> ,="hI:*<
</BODY> #{_iNr a9
</HTML> H46N!{<;@
6}l[%8
hXnfZx%
HQ9+ f8e :J#jbS
H CiWz>HWH
Oh# z zo
wxJu=#!M
INTERCAL S5o,\wT
PLEASE DO ,1 <- #13 uM)#T*(
DO ,1 SUB #1 <- #238
I'`90{I
DO ,1 SUB #2 <- #112 9Js+*,t
DO ,1 SUB #3 <- #112 ]*?lgwE
DO ,1 SUB #4 <- #0 `%A vn<
DO ,1 SUB #5 <- #64 R_^0Un([
DO ,1 SUB #6 <- #238 5o6X.sC8e
DO ,1 SUB #7 <- #26 ) >te|@}o
DO ,1 SUB #8 <- #248 D*&#}c,*
DO ,1 SUB #9 <- #168 n
g%~mt
DO ,1 SUB #10 <- #24 ]sTb Ew.[
DO ,1 SUB #11 <- #16 71n3d~!O>
DO ,1 SUB #12 <- #158 `^ZhxFX
DO ,1 SUB #13 <- #52 k?Kt*T
PLEASE READ OUT ,1 GXaPfC0-y
PLEASE GIVE UP iD*21c<