“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。
bPsvoG
4*_jGw
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》。 lpi"@3
!vX4_!%
以下是用不同语言写成的Hello World程序的几个例子: ~EtGR #
N
Ada XtCIUC{r,
with Ada.Text_Io; use Ada.Text_Io; QQ?t^ptv
procedure Hello is pPL=(9d
begin /gAT@Vx
Put_Line ("Hello, world!"); ^f[6NYS?
end Hello; 0E\#!L
7_~sa{1R.
O_ _s~
汇编语言 V
x#M!os0
&l6@C3N$
x86 CPU,DOS,TASM .2I?^w&j+
MODEL SMALL CU=sQfE
IDEAL D5gj*/"
STACK 100H `%YMUBaI
?N4FB*x
DATASEG .!q_jl%U
HW DB 'Hello, world!$' 2poo@]M/
}u#3 hYa
CODESEG Jp jHbG
MOV AX, @data d&3"?2IQ
MOV DS, AX [aSuEu?mC
MOV DX, OFFSET HW @x `X|>&
MOV AH, 09H y;o - @]
INT 21H 2ZxhV4\
MOV AX, 4C00H ^%!{qAp}Z
INT 21H [%k8l~ 6
END si&du
H*]Vs=1
5V 2ZAYV
x86 CPU,GNU/Linux,NASM R_!'=0}V
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). l/k-`LeW
;Enter this into "hello.asm" then type: )q x;/=D
;"nasm -f elf hello.asm" Tm^kZuT{
;"ld hello.o -o hello" ~q`f@I
;"./hello" >5O~SF.
aOvqk ^
section .data ;data section declaration *VsGa<V
msg db 'Hello World!',0AH ,X!) z Amm
len equ $-msg ;string length aiPm.h>
B}[CU='P*
section .text ;code section declaration y`9#zYgqA
global _start ;entry point (start of execution) zS:2?VXxq
_start: mov edx,len ;string length $WIE`P%
mov ecx,msg ;string start (IV\sY
mov ebx,1 ;file handle: stdout eipg,EI
mov eax,4 ;sys_write +-tFg XG
int 80h ;kernel system call +cfcr*
8SpG/gl"
mov ebx,0 ;return value { <Gyjq
mov eax,1 ;sys_exit \W=3P[gb
int 80h ;kernel system call D%+yp
FS}b9sQ)
G^B>C
x86 CPU,Windows,MASM32 RB4n>&Y
.386 .I_atv
.model flat,stdcall 7 "eK<qJ
option casemap:none 89>}`:xS^
;Include 文件定义 he(K
include windows.inc E5i5gE"\
include user32.inc LZ wCe$1
includelib user32.lib yF\yxdUX#
include kernel32.inc
Gd A!8
includelib kernel32.lib 3qTr|8`s
;数据段 t
U}6^yc
.data ~!ooIwNNz
szCaption db 'A MessageBox!',0 Q u2
~wp<
szText db 'Hello,world!',0 NsI. mTc2
;代码段 D?#l8
.code A6[FH\f
start: gcnX^[`S
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK * WV=X p
invoke ExitProcess,NULL .xqi7vVHZ
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> nA0%M1a
end start ;8oe-xS\+
X$KTsG*
%|JiFDjp
AWK JPF6zzl)
BEGIN { print "Hello, world!" } *rTg>)
u<8b5An;
tN<X3$aN
BASIC /=YNkw5
传统版BASIC(例如GWBASIC): "gy&eR>
A|LO!P,w
10 PRINT "Hello, world!" 3Ewdu
20 END O?g;Ny
tAq0Z)
或在提示符输入: T9R#.y,
nrY)i_\
?"Hello, world!":END mhVLlbY|t
@'>RGaPV
现代版BASIC(例如Quick BASIC): qkKl;Z?Y:
g"748LY>=p
Print "Hello, world!" PP{9Y Vr
=Rx4ZqTI|
以下的语句在Quick BASIC中同样有效: W8 Ssv
rJGh3%
? "Hello,world!" M6&=-
<y8oYe_!
Tr_gc~
BCPL $F^VtCx2&
GET "LIBHDR" .;g kV-]
{ol7*% u
LET START () BE Uj;JN}k
$(
7LU^Xm8
WRITES ("Hello, world!*N") $M)SsD~
$) W:8MqVm34
;@=3
@v
;[;WEA
Befunge ~bkO8tn
"!dlrow olleH">v k6M D3c
, k JmwR
^_@ lIS`_H}
Xr=BxBttp
N `:MF 9
Brainfuck ;U>nj],uv
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< IQU1 JVkZ
+++++++++++++++.>.+++.------.--------.>+.>. CPZ,sWg5
[L X/O@
>=97~a+.
C ;&<N1
#include <stdio.h> la<.B^
e4N d
int main(void) ^7\kvW
{ x?o#}:S
printf("Hello, world!\n"); g;=VuQuP|
return 0; xI{fd1
} t3<8n;'y:
27N;>
~(v5p"]dj
C++ a%.W9=h=M(
#include <iostream> tkZUjQIX
s8&q8r7%
int main() <L8|Wz
{ EtzSaB*|
std::cout << "Hello, world!" << std::endl; yVnG+R&
return 0; !*Is0``
} k*?T^<c3
D&pn@6bB
@Pk<3.S0
C++/CLI C<C$df
int main() {,JO}Dmu5
{ U2m#BMV
System::Console::WriteLine("Hello, world!"); <c[\\
:Hh*
} N$kxf
(9RfsV4^
7:olStK
C# (C Sharp) %B\x
%e;P
class HelloWorldApp 3as=EYm
{ Hh Q0>
public static void Main() j~>{P=_}
{ B?i#m^S
System.Console.WriteLine("Hello, world!"); ~D3S01ecM
} _?H3*!>3
} 2|^@=.4\
pDlrK&;\z
z*h:Nt%.
COBOL 2j8GJU/L
IDENTIFICATION DIVISION. te(H6c#0
PROGRAM-ID. HELLO-WORLD. uCr& `
BJwuN
ENVIRONMENT DIVISION. _M/N_Fm
#?w07/~L
DATA DIVISION. .2c/V
I+H~ 5zq.
PROCEDURE DIVISION. %4m Nk}tyH
DISPLAY "Hello, world!". g8uqW1E^
STOP RUN. dvjj"F'Bf
UgAp9$=z
'27$x&6>S
Common Lisp xx!8cvD4?
(format t "Hello world!~%") OU UV8K
"jyo'r
^'E^*R
DOS批处理 6}-No
@echo off I;NW!"pU
echo "Hello, world!" Ur#jJR@%3
c+3`hVV
QO}~"lMj
Eiffel v|(]u3=1_
class HELLO_WORLD K bLSK
q~
aFV<Q
creation nSyLt6zn\
make
]S4"JcM
feature I :<,9.
make is xg/(
local uQvTir*e
io:BASIC_IO .4\I?
do I}bu
!!io %3qjgyLZ|
io.put_string("%N Hello, world!") pFY*Y>6ar
end -- make FzX ;~CA
end -- class HELLO_WORLD >[aR8J/U
?pZU'5le`
5zBA ]1PY
Erlang LH(P<k&
-module(hello). Kg';[G\
-export([hello_world/0]). l%2VA
fX`u"`o5
hello_world() -> io:fwrite("Hello, World!\n"). bUS:c
2"
Oq~{HJ{
5kw
K%
Forth Gw3+TvwU+Q
." Hello, world!" CR [@lK[7 u
6:G&x<{
GKIzU^f
Fortran T;(,9>Qsu
WRITE(*,10) 76rv$z{g^
10 FORMAT('Hello, World!') X1(ds*'Kv
STOP [<@T%yq
END UxNn5(:sM@
+8zACs{p
U\lbh;9G
HTML 68,j~e3-i
<HTML> ,WWd%DF)
<HEAD> d]e36Dwk
<TITLE> Hello World! </TITLE> <8 <P,
</HEAD> V.:,Q
<BODY> S. `y%t.GP
<p>Hello World!</p> !6=s{V&r1
</BODY> "<0 !S~]
</HTML> +h"i6`g
O80Z7
T+Re1sPr?
HQ9+ >
Hv9Xz
H +:@^nPfHy
I%r7L
$/"Ymm#"\Y
INTERCAL E>QS^)ih
PLEASE DO ,1 <- #13 S|tA%2z
DO ,1 SUB #1 <- #238 k*;U?C!
DO ,1 SUB #2 <- #112 2x<BU3
DO ,1 SUB #3 <- #112 fQib?g/G
DO ,1 SUB #4 <- #0 M
_<
|n
DO ,1 SUB #5 <- #64 RL4|!HzR
DO ,1 SUB #6 <- #238
Culv/
DO ,1 SUB #7 <- #26 ra*|HcLD
DO ,1 SUB #8 <- #248 6<W^T9}v@/
DO ,1 SUB #9 <- #168 h>!h|Ma
DO ,1 SUB #10 <- #24 &6CDIxH{
DO ,1 SUB #11 <- #16 A[m?^vk q
DO ,1 SUB #12 <- #158 \2 DED
DO ,1 SUB #13 <- #52 Ne+Rs+~4
PLEASE READ OUT ,1 #d % v=.1
PLEASE GIVE UP vxPE=!|
it H
@I4HpY7:
Java mh"PA p
public class Hello LAc60^t1
{ u_WUJ_
public static void main(String[] args) zqj|$YNC
{ Fxa{
9'99
System.out.println("Hello, world!");
+!u9_?Tp
} JvXuN~fI{[
} NE#`ZUr3
WVyDE1K<
`/T.u&QF
JSP 1;~sNSTo
<% IrYj#,xJ
out.print("Hello, world!"); &I-:=ir
%> q0%QMut%
T^^7@\vDI
=M?+KbTJ3
MIXAL
bMc[0
TERM EQU 19 the MIX console device number Z#u{th
ORIG 1000 start address q'S[TFMNE
START OUT MSG(TERM) output data at address MSG $)*qoV
HLT halt execution A v>v\ :.>
MSG ALF "MIXAL" %G(VYCeK
ALF " HELL"
uSXnf
ALF "O WOR" RDSC @3%
ALF "LD " EFDmNud`Q
END START end of the program 0Md.3kY
%m6qL
dn'|~zf.
Nuva Sm {Sq
<..直接输出..> "
l|`LjP5M
Hello, world! [H\0
'
r[ k
<..或者..> cPZ\iGy
F6~
;f;
<. wq.'8Y~BE
// 不带换行 0B1nk!F
? "Hello, world!" =,it`8;
92Gfxld\
// 或者 uy2~<)
>.UEs8QV
// 带换行 DW,ERQ^
?? 'Hello, world!' d1.@v;
.> lmcgOTT):
XPrnQJ
`&x>2FJ
OCaml Y*9vR~#H
let main () = S@pdCH, n
print_endline "Hello world!";; rhOxyY0
U= GJuixy
yD\Kn{
Pascal &^&0,g?To
program Hello; p&\QkI=
begin l@w\
Vxr
writeln('Hello, world!'); ?r|iZKa
end. U&(gNuR>J
:s+?"'DP
p5rq>&"
Perl 93Gj#Mk
#!/usr/local/bin/perl IIMf\JdM
print "Hello, world!\n"; T*B`8P
'S}3lsIE
7~"eT9WV
PHP i,~(_|-r
<?php rgXX,+cO
print("Hello, world!"); q}jh>`d
?> V&j]*)
VXk[p
3s]o~I 2x
Pike ]srL>29_b
#!/usr/local/bin/pike q@S\R
7R
int main() \5N\NN @J
{ bhDqRM
write("Hello, world!\n"); }t(5n $go6
return 0; ;K l'[~z
} 9qi|)!!L
0 7qjWo/t
o:UNSr
PL/I )RFY2}
Test: procedure options(main); '_DB0_Dp
declare My_String char(20) varying initialize('Hello, world!'); GZ5 DI+3
put skip list(My_String); \COoU("
end Test; (JOR:
1aT
Z! /_H($
,*V%
Prolog 4j+M<g
goal .0/"~5
write("hello,world!"). \v:Z;EbX
k=d_{2 ~
,,j> 2Ts
Python /w6'tut
#!/usr/local/bin/python Xeja\5zB
print "Hello, world!" zGd[sjL
3`3my=
qMVuBv
REXX LhF;A~L
say "Hello, world!" lM#/F\
XpKeN2=p
3^H-,b0^
Ruby p;zT #%
#!/usr/bin/ruby It'kO jx]
print "Hello, world!\n" /3Y"F"`M.
~_CZ1
| LZ+_
Scheme G a$2o6
(display "Hello, world!") .pxUO3g
(newline) FS)C<T]t
m/g[9Y
mm!JNb9(
sed (需要至少一行输入) ;)f,A)(Z
sed -ne '1s/.*/Hello, world!/p' asvM/ 9
3# 0Nd"/0
u&`rK7J
Smalltalk OWr\$lm@z$
Transcript show: 'Hello, world!' d@ZXCiA},
H2g#'SK@
=yJc pj
SNOBOL k'"R;^~xg
OUTPUT = "Hello, world!" ;l `(1Q/
END b,ZBol|X
FFVh~em{
Xa'b@*o&
SQL LChwHkRHJI
create table MESSAGE (TEXT char(15)); =`MQKh,
insert into MESSAGE (TEXT) values ('Hello, world!'); r<dvo%I#|
select TEXT from MESSAGE; ~}D"8[ABj
drop table MESSAGE; W^,p2
Ly`.~t(~l
_w <6o<@
Tcl w2!5TKZ`
#!/usr/local/bin/tcl <gvgr4@^yR
puts "Hello, world!" ~O/B
? R[GSS1
>A L^y(G
TScript ucLh|}jJ5
? "Hello, world!" h=au`o&CG
SrdCLT8
"5sUE!)f
Turing 0x,4H30t(
put "Hello, world!" }lx'NY~(W
}vF=XA
apxq] !
`
UNIX-style shell U6nC
<3f
F
程序中的/bin/sh可改为您使用的shell KAT^v bR
ll"6KI'X
#!/bin/sh KAy uv
echo 'Hello, world!' /T&+vzCF
4kNSF
^!(tc=sr
GUI Q;z'"P
<HW2W"Go\
Delphi R|O^7o
program HelloWorld; %yVP@M
uses VRv.H8^{
Dialogs; wD pL9 q
begin lz#@_F|.*
ShowMessage('Hello, World!'); Hg(nC*#/Q
end. Io7=Mc4
`GooSX
h&Q-QU
Nuva srU*1jD)
<. :?3y)*J!
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) $4CsiZ6
.> gln
X C
^S(["6OJ(
.X4UDZQg
Visual Basic y
0fI7:e3
MsgBox "Hello, world!" nhq,Y0YH
'或者 eGrxS;NY
Print "Hello, world!" Xr|e%]!**
h4>q~&Pd
Y-"7R>^I
Visual FoxPro q+67Wc=
? "Hello, world!" g.Kyfs4`
!xC IvKW
c=:A/z{
X11 PtKrks|y
用一个程序 A$J?-
v kW2&
xmessage 'Hello, world!' 2s`~<EF N
n#5 pd;!n
用C++和gtkmm 2 "4QD\k5
`uqsYY`V
#include <iostream> HO8x:2m
#include <gtkmm/main.h> kkV*#IZ
#include <gtkmm/button.h> K./L'Me
#include <gtkmm/window.h> J35[GZ';D
using namespace std; ;MKfssG
IqjH
class HelloWorld : public Gtk::Window G]>P!]
{ Jy#21
public: NK(; -~{P
HelloWorld(); X&