“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。 kW+G1|
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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》。 <sc\EK
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以下是用不同语言写成的Hello World程序的几个例子: "wINBya'M
Ada L+t[&1cW
with Ada.Text_Io; use Ada.Text_Io; S>#R_H<(
procedure Hello is s1=+::
begin . ,R4WA,
Put_Line ("Hello, world!"); m8HYWzN
end Hello; A9;0y jae
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汇编语言 [ f34a
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x86 CPU,DOS,TASM Pin/qp&Fa8
MODEL SMALL "{ FoA3g|
IDEAL yd*3)6=
STACK 100H { *$9,
i-.c=M
DATASEG N~| t!G*9
HW DB 'Hello, world!$' S=PJhAF
W&KM/9d
CODESEG S(w\Z C
MOV AX, @data !W~<q{VTs
MOV DS, AX sOz sY7z3Z
MOV DX, OFFSET HW I7zn>^0}
MOV AH, 09H JiA'BEJN
INT 21H v)+@XU2wZ
MOV AX, 4C00H "Yby
INT 21H Q6x%
END [O1|75
CKd3w8;
t!~S9c
x86 CPU,GNU/Linux,NASM `pm>'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ;RHNRVP
;Enter this into "hello.asm" then type: e "n|jRh
;"nasm -f elf hello.asm" v ):V
;"ld hello.o -o hello" RHI&j~
;"./hello" 3\+N`!
l;0y-m1
section .data ;data section declaration hy!6g n
msg db 'Hello World!',0AH n| C|&
len equ $-msg ;string length u5F}( +4r
(3W&AM
section .text ;code section declaration x5F@ad9
global _start ;entry point (start of execution) Vhph`[dC{
_start: mov edx,len ;string length aS/`A
mov ecx,msg ;string start mp:m`sh*i
mov ebx,1 ;file handle: stdout L;yEz[#xaT
mov eax,4 ;sys_write uA%Ts*aN
int 80h ;kernel system call Ue! Q. "
v20~^gKo=m
mov ebx,0 ;return value U|?,N0%Z1
mov eax,1 ;sys_exit C0<YH "
int 80h ;kernel system call U&Ab#m;
*~;8N|4<
:\bfGSD/gd
x86 CPU,Windows,MASM32 {:)vwUe{
.386 3]`mQm E
.model flat,stdcall /buWAX1
option casemap:none _z]v<,=3M
;Include 文件定义 2kJ!E@n7
include windows.inc u>o<tw%Y
include user32.inc zt?H~0$LB
includelib user32.lib ^1VbH3M
include kernel32.inc e1uMR-Q
includelib kernel32.lib Pb4q`!
;数据段 &I)\*Ue2t
.data I.a0[E/,
szCaption db 'A MessageBox!',0 r0Z+RB^I
szText db 'Hello,world!',0 =YHt9fb$c
;代码段 j ug'g
.code j+Zt.KXjT
start: >BJ}U_ck
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK |D<+X^0'
invoke ExitProcess,NULL *l-`<.
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> k>>`fE\K
end start `
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AWK @d)LRw.I
BEGIN { print "Hello, world!" } ohsH 2]C
qiU5{}
:k N5?t=
BASIC d$[8w/5Of
传统版BASIC(例如GWBASIC): BSDk9Oc
bpp*
10 PRINT "Hello, world!" ~S;! T
20 END Lzz)n%y5
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或在提示符输入: rhoeZ
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?"Hello, world!":END lY,/ W
3agNB F2
现代版BASIC(例如Quick BASIC): : I)G v
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Print "Hello, world!" @'gl~J7
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以下的语句在Quick BASIC中同样有效: 7}o6_i
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? "Hello,world!" I.9o`Q[8&
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BCPL {XHk6w
*-
GET "LIBHDR" |*E"G5WZM
~d>uXrb
LET START () BE ~bGnq,
.$
$( `M)E* G
WRITES ("Hello, world!*N") &-4
?!
$) ~},~c:fF?
:d({dF_k;p
Q"'V9m7
i
Befunge zDd5cxFdZ
"!dlrow olleH">v X'@f"= v9k
, hHEPNR[.
^_@ $+TYvA'N
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Brainfuck :MBS>owR
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< >b43%^yii
+++++++++++++++.>.+++.------.--------.>+.>. n$
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P)$h8
C ZOn_dYjC
#include <stdio.h> J|q^+K
L;Vq j]_
int main(void) L~
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{ 0d`5Gy_ D%
printf("Hello, world!\n"); M8zE3;5
return 0; gD1+]am
} cUs L6y
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Gh=<0WaF=
C++ ] 9@X?q
#include <iostream> EZ{/]gCK
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int main() OM{Dq|
{ 0T0/fg(o
std::cout << "Hello, world!" << std::endl; WvbEh|y
return 0; e{JVXc[D
} 6WO7+M;z
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C++/CLI 9t}J|09i
int main()
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{ 5A,=vE
System::Console::WriteLine("Hello, world!"); 3`ml;
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} j[H0SBKC
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=1/q)b,p)
C# (C Sharp) zv@bI~3~
class HelloWorldApp U3N(cFXn
{ Th/{x
h
public static void Main() /ISLVp%H
{ Q ]0r:i=
.
System.Console.WriteLine("Hello, world!"); O a1'oYIHg
} eK*W=c#@
} kXMP=j8
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tO`?{?W7
COBOL i7(~>6@|
IDENTIFICATION DIVISION. ,S0UY):( A
PROGRAM-ID. HELLO-WORLD. Vq U|kv
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ENVIRONMENT DIVISION. 7O9n!aJ
Rhv%6ekI
DATA DIVISION. C
rfRLsN]
zu C5@jy.x
PROCEDURE DIVISION. 2md.S$V$,
DISPLAY "Hello, world!". PK}vh%
STOP RUN. ?^F5(B[+Y
AygvJeM_W
$NdH*
Common Lisp R|-j]Ne
(format t "Hello world!~%") V pH|R
*k4+ioFnKE
L W?&a3e
DOS批处理 A9iQ{l
@echo off )gjGG8Ee
echo "Hello, world!" 4gya]
pkW5D
VW~Xbyf
Eiffel VRB~7\A5<)
class HELLO_WORLD xRB7lV*
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creation $Ba`VGP>)3
make Qi"'bWX@
feature j=\Mx6os
make is {IrJLlq
local HGb.656r
io:BASIC_IO V>r j$Nc]
do 5)8.
!!io 0NrTJ R`
io.put_string("%N Hello, world!") .5NZf4:C
end -- make SKW;MVC
end -- class HELLO_WORLD {<r`5
G_0)oC@Jl:
`;e^2
Erlang gLV^Z6eE
-module(hello). "&}mAWT%If
-export([hello_world/0]). g&XhQ.aa
[*tU}9
hello_world() -> io:fwrite("Hello, World!\n"). ,.h$&QFj;
1MpX] j8C#
RRNH0-D1l
Forth cT I,1U
." Hello, world!" CR /XN*)m
n-W?Z'H{r
@T_O6TcY
Fortran -C=]n<ak
WRITE(*,10) &62`Wr 0C
10 FORMAT('Hello, World!') p#z;cjfSt
STOP -h=c=P
END !}y8S'Yjw
98=XG1sQ@
5"[yFmP*
HTML VSx%8IM+X
<HTML> vmMV n-\#
<HEAD> A=W5W5l(>
<TITLE> Hello World! </TITLE> 1BTgGF
</HEAD> "AV1..mu
<BODY> a~6ztEhGm
<p>Hello World!</p> <e[!3,%L
</BODY> 3JTU^ -S<
</HTML> 9W$mDw6f
A
xRl*B
sBbL~ce50?
HQ9+ %6"o8
H 2}59 7Hb
H RWZ0 '
juR
INTERCAL jzT;,4poy
PLEASE DO ,1 <- #13 K7+^Yv\YQx
DO ,1 SUB #1 <- #238 9*f2b.Aj
DO ,1 SUB #2 <- #112 Dxz5NW4
DO ,1 SUB #3 <- #112 Gi;9 S
DO ,1 SUB #4 <- #0 RsR] T]4
DO ,1 SUB #5 <- #64 7L1\1E:!
DO ,1 SUB #6 <- #238 gW/QFZjY
DO ,1 SUB #7 <- #26 {7/ A
DO ,1 SUB #8 <- #248 1`nc8qC
DO ,1 SUB #9 <- #168 xcsFODx~
DO ,1 SUB #10 <- #24 OCvml 2
vP
DO ,1 SUB #11 <- #16 %+D-y+hn
DO ,1 SUB #12 <- #158 1k*n1t):
DO ,1 SUB #13 <- #52 MM=W9#
PLEASE READ OUT ,1 q#.rYzl0
PLEASE GIVE UP fp,1qzU[k
r*c82}tc
Z3Bo@`&?
Java t*eleNYeS~
public class Hello O7! fI'R
{ =%:JjgKc*t
public static void main(String[] args) t%0r"bTi
{ k\Yu5)
System.out.println("Hello, world!"); Qfwwh`;
} ;L#LDk{Za
} zojuH8
|2WxcW]U.%
Q9Q!9B@
JSP Z3LQl(
<% pg5@lC]J
out.print("Hello, world!"); bCH*8,Bmh
%> h9,wiT
fQ2!sV
&C
CHxjsKR
MIXAL eTLI/?|+N
TERM EQU 19 the MIX console device number u>JqFw1
ORIG 1000 start address @1/Q
START OUT MSG(TERM) output data at address MSG B:.;,@r]
HLT halt execution
O6M}W_
MSG ALF "MIXAL" & y#y>([~
ALF " HELL" 6R3"L]J
ALF "O WOR" FKDamHL<
ALF "LD " DQL06`pX/
END START end of the program R^mu%dw)(%
qk"oFP6
XHwZ+=v
Nuva )Tyky%P+iI
<..直接输出..> P wt ?9I
Hello, world! FZeN,
U*`
<..或者..> 9Bbm7Gd
gxBl1
<. w>/pQ6=OFR
// 不带换行 GU;TK'Yy?
? "Hello, world!" q?e16M
nr<}Hc^f-
// 或者 mGMinzf
sWojQ-8}
// 带换行 7cOg(6N
?? 'Hello, world!' 3:02`;3
.> ;T"m[D
:$X4#k<
'6dD^0dZ
OCaml Q(!}t"u
let main () = (e bBH
print_endline "Hello world!";; utFcFdX
g:uaI
IV
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Pascal ~#N.!e4
program Hello; Le#E! sU
begin 'JW_]z1
writeln('Hello, world!'); / ut~jf`
end. vo}_%5v8
lO5gkOJ?
|GVGny<
Perl C[87f-g
#!/usr/local/bin/perl !Xv2PdP
print "Hello, world!\n"; aQym=
6%e
>X\s[d&(
^V0{Ew/x
PHP Wj f>:\w
<?php y9re17{
X
print("Hello, world!"); \4`saM /x
?> C.9eXa1wkT
LK-K_!F
,P; a/{U
Pike YCLD!S/?
#!/usr/local/bin/pike ,N@Icl
int main() v[3hnLN%
{ e$xv[9
write("Hello, world!\n"); 0z'={6,
return 0; wEHrer
} 9'/ |?I
#QyK?i*
G~iYF(:&
PL/I q3pN/f;kr,
Test: procedure options(main); ja,L)b:
declare My_String char(20) varying initialize('Hello, world!'); p#8LQP~0$
put skip list(My_String); P20]>Hg
end Test; 0F0(]7g^
AN:RY/ %Wo
<DlanczziF
Prolog (k)gZD9~{?
goal Pu\DYP:(
write("hello,world!"). dnWt\>6&
2
i&s=!`
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Python $X<<JnsK
#!/usr/local/bin/python uB#B\i
print "Hello, world!" ph&H