“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。 ;2*hN(
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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》。 C;>!SRCp
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以下是用不同语言写成的Hello World程序的几个例子: =^3 Z
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Ada OiI29
with Ada.Text_Io; use Ada.Text_Io; c'O"</
procedure Hello is LYhjI
begin *sz:c3{_
Put_Line ("Hello, world!"); |$
end Hello; V(wm?Cc]
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汇编语言 NpI "XQ
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x86 CPU,DOS,TASM /3#)
MODEL SMALL r^zra|]
IDEAL %1h%#/#[
STACK 100H { 0?^ $R8j
\3q Z0
DATASEG #l 7(WG
HW DB 'Hello, world!$' !A":L0[7n
&Zy%Zz
CODESEG Smg z}
MOV AX, @data [SJ3FZ<
MOV DS, AX `"Lk@
MOV DX, OFFSET HW o=C:=
MOV AH, 09H W<Ri(g-
INT 21H q[}W&t,
MOV AX, 4C00H efN5(9*9R
INT 21H PJ-g.0q
END uidoz
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x86 CPU,GNU/Linux,NASM CT{mzC8
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). FIu|eW+<l
;Enter this into "hello.asm" then type: &+|bAn9AJ
;"nasm -f elf hello.asm" o3C GG
;"ld hello.o -o hello" d
RIu A)0s
;"./hello"
}o[NB
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section .data ;data section declaration LiyR,e
msg db 'Hello World!',0AH ?LSwJ
@#
len equ $-msg ;string length R/EpfYOX
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section .text ;code section declaration )kIZmQ|f1
global _start ;entry point (start of execution) Fa0Fl}L
_start: mov edx,len ;string length uxx(WS
mov ecx,msg ;string start Xx,Rah)X3
mov ebx,1 ;file handle: stdout s+0n0C
mov eax,4 ;sys_write T|k_$LH
int 80h ;kernel system call Kt3T~k
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mov ebx,0 ;return value
{c}n."`
mov eax,1 ;sys_exit H"NBjVRU%
int 80h ;kernel system call JCjV,
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x86 CPU,Windows,MASM32 SDu%rr7sQ
.386 rczwxWK
.model flat,stdcall !,<rW<&;
option casemap:none f D<0V
;Include 文件定义 A= 96N@m6
include windows.inc W
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include user32.inc r;~7$B)
includelib user32.lib W#9A6ir>
include kernel32.inc p}]K0F!
includelib kernel32.lib U+G8Hs/y
;数据段 eNDc220b
.data dnzZ\t>U
szCaption db 'A MessageBox!',0 TUN6`/"
szText db 'Hello,world!',0 O[+\` 63F=
;代码段 R+# g_"1@p
.code +!/pzoWpE
start: wd*V,ZN7
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK JD)wxoeg
invoke ExitProcess,NULL @Zzg^1Ilpu
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> "Wg5eML0
end start o*5b]XWw
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BEGIN { print "Hello, world!" } f?lnBvT|b
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BASIC .efbORp
传统版BASIC(例如GWBASIC): 7V%b!R}
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10 PRINT "Hello, world!" '
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20 END ^!6T,7B B
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或在提示符输入: \SooIEl@
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?"Hello, world!":END Zt \3y
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现代版BASIC(例如Quick BASIC): ]#;u]
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Print "Hello, world!" F%I*m^7d
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以下的语句在Quick BASIC中同样有效: +{\b&q_
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? "Hello,world!" ~pw%p77)
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BCPL ]Wn=Oc{F
GET "LIBHDR" 2,r jy|R`
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LET START () BE fBLR
$( _|>bOI
WRITES ("Hello, world!*N") i\zN1T_
$) Of;$
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:0% $u>;O:
Befunge )U+&XjK
"!dlrow olleH">v u>.>hQ
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F~l:WQAj
Brainfuck E9Hyd #A
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< \tfhF#'
+++++++++++++++.>.+++.------.--------.>+.>. S[y?>
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C ,-)ww:
#include <stdio.h> V4. }wz_Y
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int main(void) Wdp4'rB
{ nXW]9zC"/
printf("Hello, world!\n"); n ==+NL
return 0; -^,wQW:o)
} 2+C8w%F8
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C++ +ooQ-Gh
#include <iostream> L8cPNgZ
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int main() 6AKT-r.
{ 8 O.5ML{
std::cout << "Hello, world!" << std::endl; `cqZ;(^
return 0; J1d|L|M
} 5wI j:s
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C++/CLI {\5-b:#_
int main() IWnyqt(k
{ k(wJ6pc
System::Console::WriteLine("Hello, world!"); J
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\
} 2KSt4oa
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C# (C Sharp) 9S{?@*V
class HelloWorldApp z1LY|8$G
{ A5YS
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public static void Main() <Q?_],ip
{ .GuZV'
System.Console.WriteLine("Hello, world!"); qD>D
} &$. x1$%
} l]mn4cn3
B=hJ*;:p
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COBOL G2hBJTW
IDENTIFICATION DIVISION. ~f[91m!+
PROGRAM-ID. HELLO-WORLD. )q'~<QxI\
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ENVIRONMENT DIVISION. &>z}u&oF
Bk8 '*O/)
DATA DIVISION. ;/ao3Q
Clzz!v
PROCEDURE DIVISION. UE/N-K)`
DISPLAY "Hello, world!". mNAp FwZ
STOP RUN. >Av%[G5=h#
Tp%4{U/0`
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Common Lisp x^JjoI2vf
(format t "Hello world!~%") }NETiJ"6
8A|i$#.&
2s8(r8 AI
DOS批处理 0%5x&vx'S
@echo off z,/y2H2
echo "Hello, world!" U-GV^j
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e3 {L%rQE
Eiffel _Rnq5y
class HELLO_WORLD Abf=b<bu
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creation m&Lc."
make kn|z
feature rFR2c?j8
make is M)!:o/!c S
local &_y+hV{
io:BASIC_IO .j 0]hn]
do rCO:39L-
!!io 'BwM{c-O"
io.put_string("%N Hello, world!") n)rF!a
end -- make =AJ I3'x
end -- class HELLO_WORLD h\^> s$
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AAt<{
Erlang hDs.4MZC`
-module(hello). Kq`"}&0b\
-export([hello_world/0]). 7w=%aW|
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hello_world() -> io:fwrite("Hello, World!\n"). to*<W,I
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Forth $\@yH^hL
." Hello, world!" CR 5PlTf?Ao
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$MG. I[h
Fortran `;R|SyrX
WRITE(*,10) RU'DUf
10 FORMAT('Hello, World!') 6axmH~_
STOP C&ivjFf
END Zm@
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HTML c=p @l<)
<HTML> W[3)B(Vq<E
<HEAD> 4r [Tpb
<TITLE> Hello World! </TITLE> <ST#<
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</HEAD> k&P_ c
<BODY> GX
lFS#`
<p>Hello World!</p> fE/8;v!=
</BODY> -j_J1P0,
</HTML> 8}W06k>)%
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2;`"B|-T
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INTERCAL 9{bzxM
PLEASE DO ,1 <- #13 :[N[D#/z
DO ,1 SUB #1 <- #238 3rZ" T
DO ,1 SUB #2 <- #112 (dF4F4`{
DO ,1 SUB #3 <- #112 ]Zim8^n?`.
DO ,1 SUB #4 <- #0 hexq]' R
DO ,1 SUB #5 <- #64 8D:{05
DO ,1 SUB #6 <- #238 xW,(d5RtZ
DO ,1 SUB #7 <- #26 A2"xCJ0`
DO ,1 SUB #8 <- #248 >cD+&h34
DO ,1 SUB #9 <- #168 c])b?dJ*
DO ,1 SUB #10 <- #24 tH"SOGfSt
DO ,1 SUB #11 <- #16 #7U,kTj9
DO ,1 SUB #12 <- #158 %6"b<
MAO
DO ,1 SUB #13 <- #52 puv*p%E
PLEASE READ OUT ,1 ^F~e?^s
PLEASE GIVE UP v|Tg %
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K`FgU7g{
Java ^[CD- #
public class Hello %f&(U/
{ morI'6N
public static void main(String[] args) .so{ RI
{ ?8(`tS(_?
System.out.println("Hello, world!"); S~F:%@,*
} 43-%")bH
} ~]/X,Cf
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#~.i\|VL
JSP /)de`k"
<% 7Yxy2[
out.print("Hello, world!"); !o4xI?
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\sC0om,
4T9hT~cT7
MIXAL %~ecrQ;
TERM EQU 19 the MIX console device number z>i D
ORIG 1000 start address %`}CbD6
START OUT MSG(TERM) output data at address MSG uPV,-rm[F_
HLT halt execution Z=!*7@QY
MSG ALF "MIXAL" !r.}y|t?;
ALF " HELL" @WEem(@
ALF "O WOR" B:z -?u#B
ALF "LD " =,[46 ;q
END START end of the program Xt=&
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gH\r# wy|
Nuva '{cN~A2b4
<..直接输出..> dtM@iDljj
Hello, world! %1VMwqC]E
MQY1he2M
<..或者..> W'XMC"
,mYoxEB kl
<. 45j+n.9=
// 不带换行 (4 {49b
? "Hello, world!" <\^X,,WtO
!icpfxOpjQ
// 或者
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R/^JyL
// 带换行 {u.V8%8
?? 'Hello, world!' 0uU%jN$
.> kM3BP&
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MmWJYF=
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OCaml SC2C%.%l`
let main () = 45MK|4\Y_
print_endline "Hello world!";; t48(GKF
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iW"L!t#\|
Pascal rpEFyHorJ
program Hello; +zs6$OI]V
begin FYcMvY
writeln('Hello, world!'); ZVp\5V*
end. 7Xad2wXn
@su{Uno8/
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Perl {sm={q
#!/usr/local/bin/perl dBlOU.B
print "Hello, world!\n"; U*&ZQw
b=|&0B$E
|}M']Vz
PHP 9x?;;qC"m9
<?php K%=n \Y
print("Hello, world!"); }=;>T)QmMO
?> {my=Li<