“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。 DmEmv/N=
z6#N f,
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》。 eS8tsI
z9}rT<hy
以下是用不同语言写成的Hello World程序的几个例子: LzB)o\a
Ada ]:(>r&'
with Ada.Text_Io; use Ada.Text_Io; GMU.Kt
procedure Hello is $v#Q'?jE
begin JR|yg=E
Put_Line ("Hello, world!"); :~3sW< PR
end Hello; 1k6f|Al-
Wp/!;
H0Qpc<Z4/
汇编语言 Po'yr] pr
{";5n7<<)
x86 CPU,DOS,TASM
LKieOgX
MODEL SMALL %Qgo0
IDEAL 8W)3rD>
STACK 100H }00mJ]H(
~
nNsq(4
DATASEG "%dWBvuO
HW DB 'Hello, world!$' \j !JRD+j
M` Jj!
CODESEG v|t_kNX;v*
MOV AX, @data ge)g ?IP4
MOV DS, AX /Mb?dVwA
MOV DX, OFFSET HW `e .;P
MOV AH, 09H ^)<>5.%1''
INT 21H ;ob-'
MOV AX, 4C00H 7Oe |:Z
INT 21H mVfg+d(
END ]|18tVXc
Vh$~]>t:f
I~H:-"2
x86 CPU,GNU/Linux,NASM BoYWx^VHx^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Q%KH^<
;Enter this into "hello.asm" then type: ny%-u&1k
;"nasm -f elf hello.asm" z)xGZ*{=
;"ld hello.o -o hello" H$au02dpU
;"./hello" e;~[PYeu
rQg7r>%Q
section .data ;data section declaration <&\HXAOd
msg db 'Hello World!',0AH e.hHpjWi?Z
len equ $-msg ;string length {\[u2{
b2u_1P\
section .text ;code section declaration X[_w#Hwp-
global _start ;entry point (start of execution) uy)iB'st&
_start: mov edx,len ;string length >DVjO9Kf
mov ecx,msg ;string start 9_V'P]@
mov ebx,1 ;file handle: stdout /s.sW l
mov eax,4 ;sys_write ?1?D[7$
int 80h ;kernel system call y;<^[
Iz,a
Hrq
mov ebx,0 ;return value p/>}{Q )Y
mov eax,1 ;sys_exit wcUf?`21,
int 80h ;kernel system call km,}7^?F0r
ZGK*]o=)
c) Zid1
x86 CPU,Windows,MASM32 &?YbAo_K
.386 2c@4<kyfP
.model flat,stdcall /f~V(DK
option casemap:none | V Ps5
;Include 文件定义 >i7zV`eK
include windows.inc ]S9~2;2^,
include user32.inc N(q%|h<Z/=
includelib user32.lib 9:"%j
include kernel32.inc He}qgE>Us
includelib kernel32.lib zm4Okg)w@
;数据段 0^nnR7
.data Z7%
|'E R
szCaption db 'A MessageBox!',0 W=41jw
szText db 'Hello,world!',0 D@*<p h=
;代码段 |K| c
.code s<Pk[7`*
start: ^d Fdw\
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 5BR9f3}
invoke ExitProcess,NULL gfG Mu0FjB
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> )pLde_ k
end start ,!_$A}@0
^
f?kA,!
RX}6H<5R
AWK VeeQmR?u-
BEGIN { print "Hello, world!" } Tu95qL~^
W(a31d
ax0RtqtR&
BASIC Eh&*"&fHR
传统版BASIC(例如GWBASIC): $50A!h
E9TWLB5A)(
10 PRINT "Hello, world!" fa9c!xDt
20 END <x@brXA
fBBNP)
或在提示符输入: 7.-Q9xv
f{MXH&d 1\
?"Hello, world!":END 'AU(WHf
e2CjZ" C
现代版BASIC(例如Quick BASIC): :td6Mywl
{j O:9O@
Print "Hello, world!" 'MH WNPG0
p&~8N#I#
以下的语句在Quick BASIC中同样有效: Mu$9#[/
vp7J';
? "Hello,world!" XoEiW R
<seb,> :
oG~a`9N%C
BCPL hw]x T5
GET "LIBHDR" v
MTWtc!6
\9TCP;{
LET START () BE 1eQa54n
$( C1_':-4
WRITES ("Hello, world!*N") 19O /Q,9
$) MLg+ 9y
g>)&Q>}=W
q66!xhp;?
Befunge N@Pf \D
"!dlrow olleH">v qE?*:$
, %_C!3kKv~
^_@ 0mk-o
%K[_;8
Jk=E"I6
Brainfuck :E'uV"j%
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ]FV,}EZ
+++++++++++++++.>.+++.------.--------.>+.>. k)j,~JH
^x(BZolkm
E-jL"H*
C v&6I\1
#include <stdio.h> gz8>uGx&V!
mTXeIng?
int main(void) +Qy0K5Ee
{ 0Snl_@s
printf("Hello, world!\n"); W(U:D?e
return 0; S_?{<{
} pv);LjF
{"hX_t
t;X
!+
C++ # rnO=N8
#include <iostream> gI<e=|J6w
-DD2
int main() WgX9k J
{ kU^*hd]
std::cout << "Hello, world!" << std::endl; W2cgxT
return 0; ?/"Fwjau
} ,SQmQ6h
2\Bt~;EIx
bV c"'RQ
C++/CLI ? t<yk(q
int main() d$.t0-lC
{ !9w3/Gthj
System::Console::WriteLine("Hello, world!"); 8+'9K%'@qX
} ^W!w~g+
#mu3`,9V
1N8gH&oF
C# (C Sharp) TY,5]*86I&
class HelloWorldApp /4x3dwXW@
{ >
Q[L,I
public static void Main() V*]cF=W[A
{ 9w\yWxl
System.Console.WriteLine("Hello, world!"); h# R;'9*V
} j$v2_q
} ^APPWQUl
\$; Q3t3
;Z:zL^rvn
COBOL EG=~0j ~
IDENTIFICATION DIVISION. JBzRL"|
PROGRAM-ID. HELLO-WORLD. |VC|@ Q
fePt[U)2
ENVIRONMENT DIVISION. U Px7u%Do
=e\E{K'f@
DATA DIVISION. }EFMJ,NQ
^|Bpo(
PROCEDURE DIVISION. #a7 Wx}
DISPLAY "Hello, world!". \X&LrneR"t
STOP RUN. f0 iYP
EPO*{bN7O
~+ _|J"\
Common Lisp $'m&RzZ
(format t "Hello world!~%") vm,/?]P
_g{*;?mS
VL6_in(
DOS批处理 lJZ-*"9V
@echo off \~j6}4XS1.
echo "Hello, world!" :yPA6O 4
~\4`tc
kC :pal
Eiffel A\Ax5eeL
class HELLO_WORLD P!uwhha/g
H# P)n
R
M
creation kFCjko
make H{&o_
feature ?[Gj?D.Wc
make is ruqx#]-
local 8&d s
io:BASIC_IO r7dvj#^
do <hG] f%
!!io #L,>)Xk jS
io.put_string("%N Hello, world!") rID_^g_tP8
end -- make a3i;r M2
end -- class HELLO_WORLD gie.K1@|
VE_% /Fs,
LHy-y%?i
Erlang X0G
Mly
-module(hello). x !)[l;
-export([hello_world/0]). "v%|&@
/%O+]#$`0
hello_world() -> io:fwrite("Hello, World!\n"). ^uG^XY&ItC
Z?XgY\(a(Q
k2]Q~
Forth u+
wKs`
." Hello, world!" CR ^5BLuN6
o*\cV6
">$.>sn{
Fortran |q0MM^%"
WRITE(*,10) oXKH,r
10 FORMAT('Hello, World!') ZmT
N
STOP (<.uvq61
END {u7%Z}<0
l;u_4`1H
MqA%hlq
HTML ;0R|#9oX_
<HTML> ^LaOl+;S
<HEAD> f[S$Gu4-
<TITLE> Hello World! </TITLE> .nGYx
</HEAD> ry99R|/d1
<BODY> $x%3^{G
<p>Hello World!</p> j?eWh#[K"
</BODY> D4';QCwo
</HTML> WnATgY t
ZH@BHg|}H
h ~\bJ*Zp
HQ9+ Kr;7~`$[
H :#yjg1aej
G"_ 8`l
\W^+aNbv=8
INTERCAL e+_~a8 -|
PLEASE DO ,1 <- #13 ^F}HWpF_
DO ,1 SUB #1 <- #238 |Wo_5|E
DO ,1 SUB #2 <- #112 C}})dL;(
DO ,1 SUB #3 <- #112 \1 ^qfw
DO ,1 SUB #4 <- #0 Ds}ctL{6"
DO ,1 SUB #5 <- #64 cwe@W PE2
DO ,1 SUB #6 <- #238 CO+[iJ,4C+
DO ,1 SUB #7 <- #26 P5&mpl1
DO ,1 SUB #8 <- #248 47(/K2
DO ,1 SUB #9 <- #168 hvc%6A\nm
DO ,1 SUB #10 <- #24 \I3={ii0
DO ,1 SUB #11 <- #16 ]7#@lL;'0
DO ,1 SUB #12 <- #158 wF@mHv
DO ,1 SUB #13 <- #52 .bwKG`F
PLEASE READ OUT ,1
.1O
PLEASE GIVE UP T3-8AUCK8?
?AL;m.X-@
'yrU_k,h
Java HOEjLwH
public class Hello k@,&'imx
{ )_7OHV *3
public static void main(String[] args) z3 zN^ZT
{ WJB/X"J
System.out.println("Hello, world!"); YLEk
M
} #7wOr78
} #fF~6wopV
ig] hY/uT
jjs1Vj1@<
JSP uude<d"U
<% ^CZ)!3qd1
out.print("Hello, world!"); =f4v: j}'|
%> S6J7^'h
yUZ;keQ_Tw
f]P&>j|
MIXAL d8Keyi8[
TERM EQU 19 the MIX console device number O{B[iy(C
ORIG 1000 start address 3]*_*<D
START OUT MSG(TERM) output data at address MSG 3`W=rIMli
HLT halt execution ]w)*8
w.)
MSG ALF "MIXAL" m/2LwN
ALF " HELL" EPY64{
ALF "O WOR" (3H'!P7|~
ALF "LD " t1y
hU"(J
END START end of the program Pk94O
3I rmDT
Do&em8i
z
Nuva R0 g-
<..直接输出..> 1|+Zmo"
Hello, world! ka3(sctZ5
3L;GfYr0
<..或者..> s'4S,
4bT21J37
<. %B;e7
UJ
// 不带换行 [c{/0*
? "Hello, world!" FIB 9W@oao
iMr Np
// 或者 OZHQnvZ
ws{2 0
// 带换行 9c/&+j
?? 'Hello, world!' \xQ10\u
.> ~y#jq,i/
/& qN yo
{5ujKQOcR
OCaml |"7^9(
let main () = QasUgZ
print_endline "Hello world!";; 5CSihw/5
-Qt>yzD3
i2PPVT
Pascal D~KEjz!bQ
program Hello; hXvg<Rf
begin 7y4!K$c$
writeln('Hello, world!'); m{U+aqAQK
end. JWu^7}@~=
^'UJ&UfX
UuNcBzB2d
Perl :HDl-8]Lw
#!/usr/local/bin/perl nm!5L[y!0
print "Hello, world!\n"; LD'eq\vO
{x$h K98
Dm,*G`Js
PHP l'_P]@*
<?php Lyx \ s;
print("Hello, world!"); sT. :"Pj$
?> H;QE',a9+i
E(5'vr0
Ol }^'7H
Pike xB1Oh+@i
#!/usr/local/bin/pike _x.!,
g{
int main() \2F$FRWo
{ 6[-N})
write("Hello, world!\n"); s|Hrb_[;l
return 0; ews4qP
} 1gq(s2izy
^|z
G8m:]!
PL/I (6xrs_ea
Test: procedure options(main); C?UV3
declare My_String char(20) varying initialize('Hello, world!'); ZDmBuf
q
put skip list(My_String); QzjLKjl7p4
end Test; g$++\%k&
i+I%]
LuM[*_8
Prolog a88(,:t
goal ~w<u!
write("hello,world!"). -y8?"WB(b
:R/szE*Ak
` |p3@e
Python kIHfLwh9N
#!/usr/local/bin/python B&l5yI
b
print "Hello, world!" bt=%DMTn
1-@[th
NJEubC?
REXX &cty&(2p
say "Hello, world!" -t92! O
AE:IXP|c
'USol<
Ruby hOI|#(-
#!/usr/bin/ruby &