“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。 w\u=)3qyVV
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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》。 tBWrL{xLe
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以下是用不同语言写成的Hello World程序的几个例子: *?>T,gx}
Ada E \EsWb
with Ada.Text_Io; use Ada.Text_Io; u8g~
procedure Hello is TnA-;Ha
begin J#(LlCs?@c
Put_Line ("Hello, world!"); D&
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end Hello; }W8;=$jr
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汇编语言 RnE4<Cy
v^NIx q}U
x86 CPU,DOS,TASM gp?uHKsM
MODEL SMALL 6ex/TySM
IDEAL : /N0!&7
STACK 100H 9};8?mucr
Fb>?1i`RN
DATASEG FUb\e-Q=
HW DB 'Hello, world!$' +Q)XH>jh
!zpRrx_
CODESEG k FD;i
MOV AX, @data ~&{S<Wl
MOV DS, AX 'ya{9EdlT
MOV DX, OFFSET HW H;LViP2K*
MOV AH, 09H =zPCrEk0
INT 21H 7"x;~X
MOV AX, 4C00H g%I"U>!2
INT 21H xml7Uarc
END pRpBhm;iJ
m,w A:o$'
hEH?[>9
x86 CPU,GNU/Linux,NASM rfg'G&A(
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `25yE/
;Enter this into "hello.asm" then type: 69NeQ$](
;"nasm -f elf hello.asm" }C?'BRX
;"ld hello.o -o hello" 2\{M:\2o
;"./hello" uyWunpT
W,n!3:7s
section .data ;data section declaration lNh70G8^p
msg db 'Hello World!',0AH AKfDXy
len equ $-msg ;string length 8MtGlW%Eh
-f^tE,-
section .text ;code section declaration 6l
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global _start ;entry point (start of execution) eJ-xsH*8
_start: mov edx,len ;string length p)-^;=<B3
mov ecx,msg ;string start ,^< R{{{-A
mov ebx,1 ;file handle: stdout &h)yro
mov eax,4 ;sys_write SHgN~Um
int 80h ;kernel system call 4l'fCZhA}
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mov ebx,0 ;return value *OsQ}onv
mov eax,1 ;sys_exit _6hQ %hv8
int 80h ;kernel system call 'GWN~5
3(N$nsi
.!3|&V'<
x86 CPU,Windows,MASM32 ,/2Vt/lt
.386 RSRS wkC
.model flat,stdcall {\1?ZrCI&
option casemap:none \?-<4Bc@
;Include 文件定义 !>o7a}?
include windows.inc T3<4B!UB&
include user32.inc '<)n8{3Q5w
includelib user32.lib Q&tG4f<
include kernel32.inc L`TLgH&?R
includelib kernel32.lib U'_Q>k
;数据段 ET*SB
.data 3;9^
szCaption db 'A MessageBox!',0 Mfuv0P~
szText db 'Hello,world!',0 4F:\-O
;代码段 f'RX6$}\1X
.code R) h#Vc(
start: 'JE`(xD
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK V=l0(03j~
invoke ExitProcess,NULL V1zmG y
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Wvh#:Z
end start ebhXak[w
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Nh|uO?&C6
AWK ; DR$iH-F
BEGIN { print "Hello, world!" } t{9GVLZ
0Mm)`!TLSW
eo?bL$A[s
BASIC ;igIZ$&
传统版BASIC(例如GWBASIC): |wMN}bq|T
s ll\g
10 PRINT "Hello, world!" ]F~dlH1Wp
20 END ="H`V V_
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或在提示符输入: |HQW0
!;A\.~-!G
?"Hello, world!":END %sP*=5?vA
q?yVR3]M
现代版BASIC(例如Quick BASIC): H*R"ntI?w
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Print "Hello, world!" IEi^kJflU
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以下的语句在Quick BASIC中同样有效: 90rol~M&
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? "Hello,world!" LH% F8
vvMT}-!
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BCPL r l%
GET "LIBHDR" 7JH6A'&
LEdh!</'24
LET START () BE ~<bZ1TD
$( \M^bD4';>
WRITES ("Hello, world!*N") k4;7<j$ir
$) 4+8@`f>s
g3y~bf
@":
^)87
Befunge tyFzSrfc
"!dlrow olleH">v ^nz.j
, KZE,bi:~
^_@ rb.N~
n_A3#d<9
6bC3O4Rw
Brainfuck _`T_">9r
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ?fSG'\h>
+++++++++++++++.>.+++.------.--------.>+.>. S,UDezxg
v!5 `|\
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C q0vQa
#include <stdio.h> Y:[u1~a
Svmy(w~m
int main(void) wc4=VC"y
{ 0GeTSFj
printf("Hello, world!\n"); usF.bkTp
return 0; TC*g|d @b
} #*Ctwl,T
#"~<HG}bR/
y<Ot)fa$
C++ ~c `l@:
#include <iostream> "
H\k`.j
UCj ld
int main() g($2Dk_F2
{ Iefn$
std::cout << "Hello, world!" << std::endl; e\L8oOk#r
return 0; YOO+R{4(
} ?e 4/p
5\nAeP
7kEn \
C++/CLI \4fQMG
int main() c^W)07-X5y
{ rey!{3U
System::Console::WriteLine("Hello, world!"); =aW9L)8D
} %.|@]!C
Km$\:Xo
_t^&Ah*
C# (C Sharp) Dlvz)
class HelloWorldApp s$j,9uRr
{ |+9&rAg
public static void Main() ww1[rCh\+
{ :V||c 5B+
System.Console.WriteLine("Hello, world!"); <e6#lFQqK
} OneY_<*a<
} D&y7-/
K}Qa~_
WpvhTX
COBOL 3JR+O<3D
IDENTIFICATION DIVISION. S
f#
R0SA
PROGRAM-ID. HELLO-WORLD. <a3WKw
"w<#^d_6
ENVIRONMENT DIVISION. R:qW;n%AF
H Pz+Dm
DATA DIVISION. (E1~H0^
>m\(6x8RE
PROCEDURE DIVISION. m8[j #=h
DISPLAY "Hello, world!". pQB."[n
STOP RUN. %xLhZ\
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c
Ny/MJ#Lq
Common Lisp *vMn$,^0h9
(format t "Hello world!~%") )^hbsMhO
?S=mybp
%W S+(0*1
DOS批处理 JBZ@'8eqi]
@echo off WcGS9`m/
echo "Hello, world!" @=u3ZVD
JucY[`|JV
jL}v9$
Eiffel 8&dF
class HELLO_WORLD \9EjClfo
HZZn'u
creation w0unS`\4
make $*m-R*kt
feature YS_;OFsd
make is Tid a a
local \i&<s;
io:BASIC_IO COlaD"Y
do 'J|_2*
!!io MolgwVd
io.put_string("%N Hello, world!") 6Kz,{F@
end -- make 5"H=zJ=r
end -- class HELLO_WORLD \~ wMfP8
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M',?u
Erlang klhtKp_p
-module(hello). 2Tppcj v
-export([hello_world/0]). [2cD:JL
_@/8gPT*i
hello_world() -> io:fwrite("Hello, World!\n"). j] [,J49L
q@2siI~W
c&Q$L }
Forth Eh4=ZEX
." Hello, world!" CR ?aMOZn?
d/@,@8:
<OPArht
Fortran L}NSR
WRITE(*,10) |4`{]2C
10 FORMAT('Hello, World!') 93hxSRw
STOP ,2ar7
5Va
END ddR>7d}N
C7AUsYM
Ek}A]zC
HTML 9N3eN
<HTML> _SkLYL!=9
<HEAD> }ad|g6i`
<TITLE> Hello World! </TITLE> R G`1en
</HEAD> =g|FT
<BODY> =tY T8Q;al
<p>Hello World!</p> $ME)#(
</BODY> IE~ |iQ?-
</HTML> >LuYHr
~Cjn7
a[TMDU;(/4
HQ9+ T[j,UkgGo
H ml$o5&sN
k VQ\1!
rrv%~giU
INTERCAL vfo~27T{(
PLEASE DO ,1 <- #13 [ikOb8 G#
DO ,1 SUB #1 <- #238 xId.GWY1
DO ,1 SUB #2 <- #112 KK &?gTa
DO ,1 SUB #3 <- #112 A5w6]: f2
DO ,1 SUB #4 <- #0 p()xz
DO ,1 SUB #5 <- #64 Du){rVY^d
DO ,1 SUB #6 <- #238 Lj;2\]
DO ,1 SUB #7 <- #26 `9.r`&T6K
DO ,1 SUB #8 <- #248 H>@+om
DO ,1 SUB #9 <- #168 n(]-y@X0_
DO ,1 SUB #10 <- #24 ;*&-C9b
DO ,1 SUB #11 <- #16 Yz<1
wt7;
DO ,1 SUB #12 <- #158 @s^-.z
DO ,1 SUB #13 <- #52 #3d(M
PLEASE READ OUT ,1 o _H`o&xr
PLEASE GIVE UP @\I#^X5lv
pb=h/8R
\uMLY<]P
Java N}YkMJy
public class Hello TuqH*{NNy9
{ gPc=2
public static void main(String[] args) I++. ee
{ 7t_^8I%[
System.out.println("Hello, world!"); 8HdAFRw
} -|\ZrE_h
} ^sg,\zD 'X
C"enpc_C/
W*w3[_"sr
JSP WMP,\=6k0
<% tklH@'q
out.print("Hello, world!"); ^zgo#J5O
%> /H+a0`/
'A[dCc8O
M&
CqSd
MIXAL 4ss4kp_>
TERM EQU 19 the MIX console device number wH6aAV~1
ORIG 1000 start address A.w:h;7
START OUT MSG(TERM) output data at address MSG 5E_YEBO/
HLT halt execution 2dgd~
MSG ALF "MIXAL" !5?<% *
ALF " HELL" *_g$MI
ALF "O WOR" YT8F#t8
ALF "LD " 3{(/x1a,4
END START end of the program ua `RJ
NW)1#]gg%
B,fo(kG
Nuva FU<Jp3<%
<..直接输出..> XBw)H
Hello, world! S#[j )U-
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<..或者..> %;"y+YFdv
FNId;
<. r/*D:x|yN
// 不带换行 wn)W
?P;k
? "Hello, world!" pcI uN
]"1DGg \A
// 或者 9JKEw
HLHz2-lI
// 带换行 7})[lL`\s
?? 'Hello, world!' cPc</[x[W
.> ]]j;/TiG
gbagi+8s`%
dcWD(-
OCaml y$R_.KbO
let main () = ##4HYQ%E
print_endline "Hello world!";; t<?,F
)sQ*Rd@t[8
B^jc3 VsR
Pascal t@+}8^M
program Hello; m<2M4u
begin BJo*'US-Q
writeln('Hello, world!'); mU9kVx1+
end.
^L&iR0
, SnSW-P
63x?MY6
Perl u,Kly<0j
#!/usr/local/bin/perl S?BG_J6A7
print "Hello, world!\n"; R
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Ef13Q]9|
0Z]!/AsC
PHP Yk Qd
<?php 1]/.` ]1
print("Hello, world!"); g95`.V}
?> @2v_pJy^
z,%$+)K
2SR: FUV/
Pike t#eTV@-
#!/usr/local/bin/pike !m?-!:
int main() d9|<@A
{ 3|Xyl`i4o
write("Hello, world!\n"); "`1bA"E
return 0; }?v )N).kW
} Z>#i**
2Q:+_v
^&Y#)II
PL/I fL7xq$K
Test: procedure options(main); 0% I=d
declare My_String char(20) varying initialize('Hello, world!'); I4?5K@a
put skip list(My_String); D*|Bb?
end Test; 4x[S\,20
ayF\nk4b
t}/( b/VD
Prolog 2P{Gxz<#
goal 0h7r&t%YsV
write("hello,world!"). ,L'zRyP
YQA,f#
P\)iZiGc
Python l_%6
#!/usr/local/bin/python fw{gx
print "Hello, world!" Q6I:"2u1
n#_$\
p>Yd
C'}KTXiRW
REXX W#3Q ^Z?
say "Hello, world!" HT1!5
A1zjPG&]
x{WD;$J
Ruby "wh ,Ue
#!/usr/bin/ruby fPW@{~t
print "Hello, world!\n" 0v$~90)
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T 0rGM
Scheme yY&I