“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。 |N^z=g P[
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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》。 *CnrzrKtQ
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以下是用不同语言写成的Hello World程序的几个例子: 0lyCk} c
Ada .*0`}H+_
with Ada.Text_Io; use Ada.Text_Io; c[a1
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procedure Hello is
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begin X*cf|g
Put_Line ("Hello, world!"); a%h'utF{[
end Hello; 0xNlO9b/
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汇编语言 /p&)bL
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x86 CPU,DOS,TASM $S|2'jc
MODEL SMALL &dC #nw
IDEAL /G>reG,G
STACK 100H A{7N#-h_
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DATASEG ,Cj8{s&;
HW DB 'Hello, world!$' V
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CODESEG 8J-;/
MOV AX, @data Nr#Y]9nA
MOV DS, AX MKuy?mri~
MOV DX, OFFSET HW 7 %P?3
MOV AH, 09H aoZ`C3
INT 21H <N{pMz
MOV AX, 4C00H 3x9O(;k
INT 21H mQ9%[U,
END ; md{T'
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x86 CPU,GNU/Linux,NASM J-W,^%
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). KAg<s}gQJ
;Enter this into "hello.asm" then type: q5$z:'zE
;"nasm -f elf hello.asm" h&!k!Su3#
;"ld hello.o -o hello" GXEOgf#i
;"./hello" !d1}IU-h
mne^PSI:
section .data ;data section declaration ZS uMQ32
msg db 'Hello World!',0AH `9QrkkG+
len equ $-msg ;string length F:/R'0
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section .text ;code section declaration YkcX#>,
global _start ;entry point (start of execution) M} IRagm
_start: mov edx,len ;string length |Hbe]2"x>
mov ecx,msg ;string start JH~v e
mov ebx,1 ;file handle: stdout 6,'!z
?d%
mov eax,4 ;sys_write Z_qs_/y
int 80h ;kernel system call s0Ii;7fA{
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mov ebx,0 ;return value ~'WvIA
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mov eax,1 ;sys_exit %iI0JF*Ez
int 80h ;kernel system call LnJ/t(KV
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:):=KowI
x86 CPU,Windows,MASM32 ,q#^_/?
.386 ]xfAdBi
.model flat,stdcall s,^?|Eo;0
option casemap:none O0xL;@rBe
;Include 文件定义 x5m
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include windows.inc r^P}xGGK
include user32.inc "F+
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includelib user32.lib Jkt
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include kernel32.inc H^Xw<Z=
includelib kernel32.lib DYH-5yX7
;数据段 wLD/#Hfi7
.data p5C
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szCaption db 'A MessageBox!',0 r0kA47
szText db 'Hello,world!',0 J+&AtGq]u
;代码段 J
p .wg
.code CF^7 {g(y_
start: -8tWc]c
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invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK q*A2>0O
invoke ExitProcess,NULL \%NhggS*
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ',0~ \V
end start vjJ!d#8
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AWK QB@qzgEJ!,
BEGIN { print "Hello, world!" } f?F
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BASIC "zw?AC6
传统版BASIC(例如GWBASIC): Ul[>LKFY
p;j$i6YJ
10 PRINT "Hello, world!" 0|{U"\
20 END ]t1)8v2w>
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或在提示符输入: ##u+[ !
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?"Hello, world!":END 7F`QN18>(
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现代版BASIC(例如Quick BASIC): hzPx8sO
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Print "Hello, world!" C3 0b}2
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以下的语句在Quick BASIC中同样有效: d"XS;;l%<
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? "Hello,world!" N>Y`>5
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BCPL [ZURs3q
GET "LIBHDR" /^uvY
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LET START () BE ]Nt97eD)
$( ACl:~7;
WRITES ("Hello, world!*N") Oe$cM=Yf
$) /~7H<^}
:c)<B@NqNo
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Befunge Eg-b5Z);
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Brainfuck I6y&6g
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ADv
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+++++++++++++++.>.+++.------.--------.>+.>. Q(k$HP
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C /gy;~eB01
#include <stdio.h> D{'Na5(
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int main(void) bHS2;K~
{ e,~c~Db*
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printf("Hello, world!\n"); jI;bVG
return 0; YXIDqTA+
} FN,0&D}`
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C++ 9d[0i#` :q
#include <iostream> Q^MB%L;D
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int main() hD>:WJ
{ 0^E!P>
std::cout << "Hello, world!" << std::endl; &@+K%qW[e
return 0; "mPa>`?
} mnmwO(.
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C++/CLI X'?v8\mPK
int main() 'dU$QO
{ RTY$oUqlZ
System::Console::WriteLine("Hello, world!"); o=`9JKB~
} VpVw:Rh>
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C# (C Sharp) YSa:"A
class HelloWorldApp hq,;H40%/
{ [tD*\\IA
public static void Main() iBo-ANnK9
{ Uw&+zJ
System.Console.WriteLine("Hello, world!"); <q[*kr
} 'E&K%/d
} ~:t2@z4p
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COBOL _ZS<zQ'
IDENTIFICATION DIVISION. t9`NCng
5
PROGRAM-ID. HELLO-WORLD. dhVwS$O )
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ENVIRONMENT DIVISION. @tj0Ir v
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DATA DIVISION. _r8AO>
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PROCEDURE DIVISION. FBY~Z$o0.
DISPLAY "Hello, world!". .<NXk"\!y
STOP RUN. qFs<s<]
=~0XdS/1
YD+C1*c!
Common Lisp O,OGq0c
(format t "Hello world!~%") ;XtDz
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I9Sh~vTm=u
DOS批处理 h{JVq72R
@echo off "LxJPt\
echo "Hello, world!" GecXM Aa:2
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FN,uD:a
Eiffel B0KM~cCPQP
class HELLO_WORLD
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\) #3S $L~
creation &qpA<F@7
make 5:PZ=jPR
feature B}FF |0<
make is z::2O/ho
local C=b5[, UCB
io:BASIC_IO 785iY865
do r9t{/})A
!!io *FE<'+%
io.put_string("%N Hello, world!") [ho'Pc3A<
end -- make XM 7zA^-
end -- class HELLO_WORLD WcJ{}V9
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Erlang 0iB1_)~
-module(hello). tQ|I$5jNJ
-export([hello_world/0]). Y~:7l5C
kL3=7t^ 1
hello_world() -> io:fwrite("Hello, World!\n"). &
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a,E;R$[!
jCl[!L5/1
Forth LgnGqIlx
." Hello, world!" CR w:N2
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37[C^R!1c
Uy_=#&jg
Fortran PaZYs~EO
WRITE(*,10) gJ7$G3&oZg
10 FORMAT('Hello, World!') #RD%GLY
STOP ;'Q{ ywr
END ;i:7E#@
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FV9RrI2
HTML }* t~&l0
<HTML> cs5Xd
<HEAD> p~b$+8#+
<TITLE> Hello World! </TITLE> w '"7~uN
</HEAD> KqUFf@W
<BODY> 1_QO>T'
<p>Hello World!</p> **"P A8
</BODY> :Rn9rdX
</HTML> +W1rm$Q
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INTERCAL T,fz/5w
PLEASE DO ,1 <- #13 24Fxx9g
DO ,1 SUB #1 <- #238 %([c4el>\F
DO ,1 SUB #2 <- #112 |3LMVN
DO ,1 SUB #3 <- #112 i&$uG[&P
DO ,1 SUB #4 <- #0 7`}z7nk
DO ,1 SUB #5 <- #64 O2e"TH3
DO ,1 SUB #6 <- #238 ?2TH("hV$
DO ,1 SUB #7 <- #26 #O
WSy'Qnt
DO ,1 SUB #8 <- #248 DbN'b(+
DO ,1 SUB #9 <- #168 ?q P}=nJ
DO ,1 SUB #10 <- #24 R;o_ *
DO ,1 SUB #11 <- #16 qo;\dp1
DO ,1 SUB #12 <- #158 GpL#,q Yc
DO ,1 SUB #13 <- #52 m
C Ge*V}
PLEASE READ OUT ,1 BR2y1Hfi
PLEASE GIVE UP U6Ak"
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f#5JAR
Java 3_$eQ`AAA
public class Hello >$DqG$D
{ zTLn*?
public static void main(String[] args) d3GK.8y_z
{ B]7jg9/
System.out.println("Hello, world!"); ~<aB-.d
} 0, /x#
} arZIe+KW
} Kt?0
kP$gl|
JSP l'QR2r7&.
<% ~\ f^L?m
out.print("Hello, world!"); h86={@Le
%> p( *3U[1
Q8y|:tb$Y
Br5Io=/wg
MIXAL U[l%oLra
TERM EQU 19 the MIX console device number 5H+k_U
ORIG 1000 start address &J$5+"/;X
START OUT MSG(TERM) output data at address MSG tHbPd.^
HLT halt execution \BXVWE|
MSG ALF "MIXAL" )/"7$2Aoy
ALF " HELL" 2-aYqMmT;
ALF "O WOR" D}sGBsOW
ALF "LD " 070IBAk}_
END START end of the program GDp p`'\
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Nuva N?0y<S ?!
<..直接输出..> % Au$E&sj
Hello, world! D"4&9"C U
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<..或者..> W#I:j: p
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<. \K~fRUo]=c
// 不带换行 &v5.;8u+OV
? "Hello, world!" -{U>}
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s
// 或者 )S}; k=kG
dP7Vsa+
// 带换行 ?4[Oh/]R
?? 'Hello, world!' SiqX1P
.> uk[< 6oxz
E? eWv)//
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OCaml 3'*%R48P`
let main () = Nv?-*&