“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。 s]i<D9h
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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》。 $jL+15^N0+
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以下是用不同语言写成的Hello World程序的几个例子: s78V \Vw3
Ada _43 :1!os
with Ada.Text_Io; use Ada.Text_Io; k"J=CDP\
procedure Hello is za[;d4<}k
begin e%.|PZ)
Put_Line ("Hello, world!"); A.(xa+z?
end Hello; E/uKzzD9
aXyg`CDv
5'"l0EuD
汇编语言 L_ 2R3w
~VaO,8&+L
x86 CPU,DOS,TASM J7s\
MODEL SMALL c9axzg
UA
IDEAL n]J;BW&Av
STACK 100H 7wwlZ;w
!-Md+I_
DATASEG n<66 7
<
HW DB 'Hello, world!$' ,: 4+hJ<q
C}cYG
CODESEG R#33ACCX
MOV AX, @data F)4;:".zna
MOV DS, AX S9@)4|3C|p
MOV DX, OFFSET HW h,)UB1
MOV AH, 09H n%}Vd
`c
INT 21H _,5)
MOV AX, 4C00H ?)'+l
INT 21H =%$BFg1a(
END r[y3@SE5
oM)4""|
ICXz(?a
x86 CPU,GNU/Linux,NASM 3(R]QO`%'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). lv0}d
;Enter this into "hello.asm" then type: Ikj_
0/%F
;"nasm -f elf hello.asm" ] !:0^|
;"ld hello.o -o hello" e6igx
;"./hello" "ba>.h,#'
Xw{Qktn
section .data ;data section declaration %[7<GcWl
msg db 'Hello World!',0AH WbDD9ZS
len equ $-msg ;string length L$<(HQQJ8
+5IC-=ZB
section .text ;code section declaration Y"Y+U`Qt
global _start ;entry point (start of execution) Pg/$N5->
_start: mov edx,len ;string length zoI0oA
mov ecx,msg ;string start 9Z;"9$+M
mov ebx,1 ;file handle: stdout M8iI e:{ c
mov eax,4 ;sys_write =K\.YKT
int 80h ;kernel system call >)`V$x
vqnFyd
mov ebx,0 ;return value tA6x
mov eax,1 ;sys_exit @$%[D`Wa<
int 80h ;kernel system call Zi~-m]9U
o" ./
/6a617?9J
x86 CPU,Windows,MASM32 SYmiDR
.386 k>dzeH
.model flat,stdcall )A H)*Mg
option casemap:none r2; )VS
;Include 文件定义 MuCnBx
include windows.inc $7JWA9#N!
include user32.inc j,i>
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includelib user32.lib J|GEt@o3
include kernel32.inc NgPY/R>
includelib kernel32.lib @&LtIN#
;数据段 %44Z7
.data WjsE#9D!of
szCaption db 'A MessageBox!',0 A~7q=-
szText db 'Hello,world!',0 0-a[[hL?
;代码段 3a\.s9A"
.code zQhc
V
start: h`:f
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK I&Y9
invoke ExitProcess,NULL li
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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> f))'8
end start C.}Vm};M
}|!9aojr
/~B\1
AWK =
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BEGIN { print "Hello, world!" } Fi!XaO
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BASIC
ra*(.<&
传统版BASIC(例如GWBASIC): TScI_8c>
C=|X]"*:u0
10 PRINT "Hello, world!" H[KTM 'n
20 END L-\o zp
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或在提示符输入: BPkqC >w
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?"Hello, world!":END / %:%la%
5EqC.g.
现代版BASIC(例如Quick BASIC): .8K ~ h
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Print "Hello, world!" mrvPzoF,]
iYHCa }
以下的语句在Quick BASIC中同样有效: F;@A2WD
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? "Hello,world!" ?}g#Mc
)]~;Ac^x
~GZpAPg*
BCPL 2%F!aeX
GET "LIBHDR" N)H
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ek3,ss3
LET START () BE ^w*$qzESy
$( Zc Y* TGx
WRITES ("Hello, world!*N") 21\t2<"
$) !O-9W=NJ
Skn2-8;10
7,![oY[
Befunge ahJu+y
"!dlrow olleH">v wmf#3"n
, ?()$imb*
^_@ M~/R1\'&j
,\cO>y@
`aw5"ns^V
Brainfuck sF=8E8qa
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< D+:} D*_&
+++++++++++++++.>.+++.------.--------.>+.>.
t/HUG#W{
%ymM#5A
j%y)%4F8
C LG
qg0(
#include <stdio.h> Mkc|uiT
9/nS?>11
int main(void) 6q!smM
{ ^s=p'&6
printf("Hello, world!\n"); 4:Bpz;x
return 0; ,9:0T LLR
} ~
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!U2Wiks
"uthFE
C++ z]Jpvw`p
#include <iostream> #g6*s+Gm
VP<_~OLc
int main() }N6r/
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{ d^Jf(NE0Yo
std::cout << "Hello, world!" << std::endl; Xw2tCRzD
return 0; ,n&e,I
} `?PpzDV7Y
9J!@,Zsh
h5.>};"@'
C++/CLI *ydU3LG7
int main() YdI&OzaroE
{ /` j~r;S
System::Console::WriteLine("Hello, world!"); =!RlU)w
} Apfs&{Uy
Qs^RhF\d
<hO|:LX
C# (C Sharp) @4Ox$M
class HelloWorldApp n #|p R2
{ 3;h%mkKQ+
public static void Main() \D]H>i$
{ qL03iV#h*V
System.Console.WriteLine("Hello, world!"); G2{.Ew
} X~Yj#@
} sBo|e]m#
?_+h+{/@B
3]iBX`Ni
COBOL !PFc)J
IDENTIFICATION DIVISION. Ao:<aX,=
PROGRAM-ID. HELLO-WORLD. JlF$|y,gV,
}gr6naz
ENVIRONMENT DIVISION. q-;z!iq|!
C6 XZZ
DATA DIVISION. -0{"QhdE%
j(;o
PROCEDURE DIVISION. _qPd)V6yb
DISPLAY "Hello, world!". ^j1WF[GiSO
STOP RUN. lR9~LNK?
-PI_*
^nS'3g^"
Common Lisp 0{Kb1Ut
(format t "Hello world!~%") j/FFxlFNL
o$=D`B
iA^GA8dn
DOS批处理 XA$Z7_gu3
@echo off )$Erfu
echo "Hello, world!" tw`{\kWG
`oxs;;P
G%V*+Ond
Eiffel uH 6QK\
class HELLO_WORLD +])St3h
SRixT+E
creation #hOAG_a,
make ,MtN_V-
feature {M5[gr%
make is W+'|zhn
local #Zm%U_$<
io:BASIC_IO \*5_gPj!d
do T =l4Vb{>
!!io j>5D4}*]f
io.put_string("%N Hello, world!") %Tn0r|K
end -- make ,pgpu !
end -- class HELLO_WORLD nI-^
;JK!dzi}
vB :_|B
Erlang ,DHiM-v
-module(hello). 4;*o}E
-export([hello_world/0]). {hr+ENgV
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hello_world() -> io:fwrite("Hello, World!\n"). @"6dq;"
hY?x14m$3
m|RA@sY%`
Forth p.gaw16}>
." Hello, world!" CR gX}(6RP_!
-L&FguoVB
U-P\F-
Fortran gUoL8~
WRITE(*,10) pMB~Lt9
10 FORMAT('Hello, World!') 5df~] -=0Y
STOP {~"&$DY2
END 7h4"5GlO0
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O>=D1no*
HTML )V}u}5
<HTML> uKI2KWU?2
<HEAD> JVzU'd;1!
<TITLE> Hello World! </TITLE> ]"3(UKx
</HEAD> @bN`+DC!<
<BODY> H$
!78/f
<p>Hello World!</p> v Kzq7E
</BODY> .}}w@NO
</HTML> FM c9oyU~
50:$km\
2qb,bp1$
HQ9+ ;xnJ+$//U
H kp~@Ub
@O3
5z8!Nmb/
BPoY32d"_
INTERCAL A
'Q
nL
PLEASE DO ,1 <- #13 >g+ogwZ
DO ,1 SUB #1 <- #238 xwwy9:ze*l
DO ,1 SUB #2 <- #112 J~0_
DO ,1 SUB #3 <- #112 F 8\nAX
DO ,1 SUB #4 <- #0 /$ 7_*4e
DO ,1 SUB #5 <- #64 nyZUf{:
DO ,1 SUB #6 <- #238 [jD.l;jF
DO ,1 SUB #7 <- #26 pZu2[
DO ,1 SUB #8 <- #248 pq"3)+3:
DO ,1 SUB #9 <- #168 ,qj
DO ,1 SUB #10 <- #24 !+?,y/*5(
DO ,1 SUB #11 <- #16 ,FvBZ.4c3=
DO ,1 SUB #12 <- #158 :
kVEB<G
DO ,1 SUB #13 <- #52 .c[v /SB]
PLEASE READ OUT ,1 : -@o3Syg
PLEASE GIVE UP ^K4#_H#"
r@_`ob RW;
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Java >Lh+(M;+F
public class Hello F[Dhj,C"
{ k!gft'iU
public static void main(String[] args) ,[To)x5o
{ a *n^(
System.out.println("Hello, world!"); N7=L^]
} By| y:
} c=U1/=R5
1M|DaAI
4s?x 8oAy
JSP -r9G5Z!|n
<% x0ZEVa0`4
out.print("Hello, world!"); p{knQ],
%> b(lC7Xm
|OXufV?I
?fB}9(6
MIXAL S7cxEOfAu
TERM EQU 19 the MIX console device number P
+U=/$o
ORIG 1000 start address 26fbBt8nP
START OUT MSG(TERM) output data at address MSG r Bv
HLT halt execution S!0ocS!t
MSG ALF "MIXAL" {wWh;
ALF " HELL" H7 acT
ALF "O WOR" :I(-@2?{
ALF "LD " $V$|"KRcs
END START end of the program %KxL{HY
.".xNHR#
lW! U:
Nuva 3YyB0BMW
<..直接输出..> "(uEcS2<
Hello, world! hjB G`S#
4}:a"1P"
<..或者..> t_@xzt10y
'H0b1t1S%
<. o(iN}. c
// 不带换行 XG
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? "Hello, world!" nwlo,[
Y[=Gv6Fr
// 或者 S/j~1q_|G
8U8l
5r
// 带换行 |];s[^$#
?? 'Hello, world!' -1ke3
.> a}3sG_(Y
ipB*]B F[
VmLV:"P}^
OCaml AP=mj
let main () = %;UEyj
print_endline "Hello world!";; 2.=3:q!H<%
rA9BY :N@
eWvL(2`T x
Pascal bXoj/zek
program Hello; KsM2?aqwf_
begin ?MevPy`H
writeln('Hello, world!'); &DdFK.lt
end. |I7-7d-;/
:]%z8,6k
vmI]N
Perl L1"y5HJ
#!/usr/local/bin/perl gd>Op
print "Hello, world!\n"; |r"1
&ow5
Sr)rKc
Ic4>kKh
PHP Zfyr&]"
<?php {s} @$rW
print("Hello, world!"); cT
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?> s8T}ah!
@DYx xM-
@&;y0N1xo
Pike eiB5 8b3
#!/usr/local/bin/pike mA:NAV$!s
int main() `X8AM=
{ ^\kv>WBE
write("Hello, world!\n"); hv
18V>8
return 0; "WOY`su>
} ;L.@4b[lP
pX
]K-
<7TE[M'
PL/I 5KJN](x+
Test: procedure options(main); Rt{qbM|b&
declare My_String char(20) varying initialize('Hello, world!'); 0}]k>ndT
put skip list(My_String); [nBlHI;&
end Test; tE/s|v#O
V2kNJwwk
E<;C@B
Prolog ~JY<DW7
goal zm rQ7(y
write("hello,world!"). c #+JG
F,^Q'$!
H aI
Python ou6|;*>d
#!/usr/local/bin/python IbAGnl {
print "Hello, world!" ^ +cf
)`]w\s
#
6R% I)
REXX X_XeI!,b
say "Hello, world!" 'M2Jw8i
UX=JWb_uGm
'S<ebwRd=
Ruby ('!90
#!/usr/bin/ruby &G?b|Tb2
print "Hello, world!\n" ?1 $.^
zRsG$)B
A<.`HCv2
Scheme 0hK)/!Y
(display "Hello, world!") s<x2*yVUA
(newline) ?}y?e}y*xZ
uN V(r"
ipfiarT~)
sed (需要至少一行输入) \:C@L&3[
sed -ne '1s/.*/Hello, world!/p' iF2/:iP
y8jk9Tv
+~Ri CZt
Smalltalk u(\O
Transcript show: 'Hello, world!' a2fV0d6*l
*,!6#Z7
+9>t;
Ty
SNOBOL 2w93 ~j
OUTPUT = "Hello, world!" 'l2'%@E>
END s)W^P4<
8E1swH5z
3=V79&
SQL ,dK<2XP
create table MESSAGE (TEXT char(15)); RajzH2j+>
insert into MESSAGE (TEXT) values ('Hello, world!'); +K2jYgy
select TEXT from MESSAGE; =p|,~q&i
drop table MESSAGE; G^J|_!.a
gS~QlW V
[#V?]P\uV
Tcl [9NzvC 9I
#!/usr/local/bin/tcl C0;c'4(
puts "Hello, world!" SN O'*?
*KSQ^.sYh
^'r/;(ZF*/
TScript n\&[^Q#b|
? "Hello, world!" CGvU{n,"
h{I)^8,M
D U#6%8~
Turing 0m_c43+^
put "Hello, world!" )xIk#>)
HkFoyy
!Z2?dhS
UNIX-style shell :Zl@4}
程序中的/bin/sh可改为您使用的shell `qp[x%7^
!\.x7N<)0
#!/bin/sh *j RNpB{)z
echo 'Hello, world!' UOy9N
'+^HeM^;
<7cm[
GUI !lp*0h(7
Y##ft Q
Delphi U7(84k\j
program HelloWorld; rI)op1K
uses lO>w|=<
Dialogs; -kT *gIJ}
begin j-@3jFu
ShowMessage('Hello, World!'); fEF1&&8^
end. B uV@w-|
@13vn x
;QQLYT
Nuva .~qu,q7k~
<. Zoh[tO
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ]Sg4>tp
.> 8R}CvzI
NL%5'8F>,
FP=%e]vJ
Visual Basic l -us j%\
MsgBox "Hello, world!" -bT1Qh
X
'或者 7<DlA>(oUX
Print "Hello, world!" -R@mnG
5
#x!h
BS!
2bwf(
Visual FoxPro |GJSAs"L@
? "Hello, world!" +]P??`,R;
1>bG]l1//
F1%-IBe
X11 \zCT""'i
用一个程序 FjD`bhw-
vfPL;__{Y]
xmessage 'Hello, world!' .XQ_,
;:NW
用C++和gtkmm 2
`b 6j7
,,vl+Z<&
#include <iostream> YNV4w{>FD
#include <gtkmm/main.h> qV2aa9p+
#include <gtkmm/button.h> #]pFE.o
#include <gtkmm/window.h> T7_i:HU%
using namespace std; oZTKG'
45fk+#
class HelloWorld : public Gtk::Window zX{K\yp
{ Y8YNRyc=
public: [A99e`
HelloWorld(); ib8@U}Vn1
virtual ~HelloWorld(); 7xidBVx
protected: q_K8vGm4e
Gtk::Button m_button; A7,TM&
virtual void on_button_clicked(); *^+8_%;1
}; qELy'\
k_$:?$
HelloWorld::HelloWorld() : m_button("Hello, world!") }cuU5WQ?%
{ `) s]T.-
set_border_width(10); fH[Yc>(oj
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); ^y"5pfSR
add(m_button); @%mJw
u
m_button.show(); YD1
:m3l!
} 7kJ =C
luAmq+
HelloWorld::~HelloWorld() {} V*HkFT
w4w[qxV>
void HelloWorld::on_button_clicked() GqB]^snh
{ t_cNH@^3<3
cout << "Hello, world!" << endl; >.^/Z/[.L
} G`3/${ti
AB92R/
int main (int argc, char *argv[]) HAJK%zLc
{ CYD+o
Gtk::Main kit(argc, argv); 8wJfGY
HelloWorld helloworld; ;G !JKg
Gtk::Main::run(helloworld); O3H dPQ
} Jb+cC)(
TV#X@jQ
rbfP6t:c3
Java i!5zHn
import java.awt.*; 3Q'Q %2
import java.awt.event.*; Bg.~#H
GcXh
V
public class HelloFrame extends Frame 8XFs)1s[
{ aYc*v5QN3
HelloFrame(String title) i#c1ZC
{ );X&J:-l+
super(title); -L=aZPW`M
} >9F&x>~
public void paint(Graphics g) S+aXlb
{ ;jC}.]
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super.paint(g); 4O}ZnE1[
java.awt.Insets ins = this.getInsets(); t.0F
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); ^lADq']
} xz5V.
public static void main(String args []) XNODDH
{ VHwAO:+-
HelloFrame fr = new HelloFrame("Hello"); _`'VOY`o
Wx~N1+
fr.addWindowListener( /{h@A~<96
new WindowAdapter() /1A3
Sw
{ NrQGoAOw
public void windowClosing(WindowEvent e) 2Fwp\I;
{ NF9fPAF%;
System.exit( 0 ); [=f(u
wY>g
} O"%b@$p\L
} 3QNu7oo
); |"t)#BUtL
fr.setResizable(true); V $'~2v{_
fr.setSize(500, 100); hsYS<]
fr.setVisible(true); U tb"6_
} L;jzDng<
} :x85:pa
,mkXUW
|%p;4b
Java Applet l;+nL[%`
Java Applet用于HTML文件。 M1UabqQ
b8Bf,&:ys
HTML代码: B4fMD]
(6b*JQ^^
<HTML> uO=yQ&
<HEAD> hn-+]Y:
<TITLE>Hello World</TITLE> *2nQZ^c.
</HEAD> J/OG\}
<BODY> 5W%^g_I
Yz"B
HelloWorld Program says: [WZGu6$SU
!'yCB9]O
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> VTM*=5|c
</APPLET> 3W&f^*
#Tm^$\*h\]
</BODY> }q8|t3
</HTML> "$@>n(w
Q&Q$;s3|Y
Java代码: {Y0Uln5u
1#]0\Y(
import java.applet.*; :.2Tcq
import java.awt.*; F ?APDGAN
^?-SMcUHB
public class HelloWorld extends Applet 0#$<2
{ qeM`z
public void paint(Graphics g) l:' 0
{ T;?=,'u
g.drawString("Hello, world!", 100, 50);
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} d'bAM{R>
} 0O@UT1M;v
f}1B-
hmijp1u
java script cD&Q