“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。 M/[_~
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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》。 9:xs)t- _
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以下是用不同语言写成的Hello World程序的几个例子: V,& OO
Ada e#}Fm;|d
with Ada.Text_Io; use Ada.Text_Io; Qp:m=f6@
procedure Hello is / s Apj
begin rrgOp5aV"
Put_Line ("Hello, world!"); fXnewPr=#
end Hello; ps` j>vX*
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汇编语言 4|cRYZj5
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x86 CPU,DOS,TASM *6u2c%^
MODEL SMALL YE*|KL^
IDEAL K7{B!kX4k
STACK 100H RRQv<x
->IZZ5G<
DATASEG i-wWbZ-
HW DB 'Hello, world!$' x_-V{
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CODESEG \pI {b9
MOV AX, @data nW\W<[O9
MOV DS, AX !^NZp%Yd
MOV DX, OFFSET HW Hiwij,1
MOV AH, 09H oz]3
Tx
INT 21H v/~&n
MOV AX, 4C00H 8[AU`F8W
INT 21H "G*$#
END S"^'ksL\
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x86 CPU,GNU/Linux,NASM x7gd6"10^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). (w"(RM~
;Enter this into "hello.asm" then type: WQ:Y NmQ1p
;"nasm -f elf hello.asm" GZx*A S]+
;"ld hello.o -o hello" :YkAp9civ
;"./hello" {=&({ cS
=\ 5f_g2M
section .data ;data section declaration G[u6X_Q
msg db 'Hello World!',0AH tZg)VJQys
len equ $-msg ;string length vy={ziJ
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section .text ;code section declaration <0~1
global _start ;entry point (start of execution) [x=(:soEqC
_start: mov edx,len ;string length LN$T.r+
mov ecx,msg ;string start xf7YIhL^*
mov ebx,1 ;file handle: stdout tV pXA'"!x
mov eax,4 ;sys_write X+u1p?
int 80h ;kernel system call %`]!atH
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mov ebx,0 ;return value WLVkrTvX
mov eax,1 ;sys_exit >P} XCAU
int 80h ;kernel system call <RC %<
rhaq!s38:
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x86 CPU,Windows,MASM32 )ryP K"V
.386 C}jrx^u>
.model flat,stdcall 'T qF}a7
option casemap:none >@?mP$;=
;Include 文件定义 *""W`x
include windows.inc i+T5(P$
include user32.inc -j rAk
includelib user32.lib ;P8%yf
include kernel32.inc `YZl2c<w*
includelib kernel32.lib tGXH)=K
;数据段 O/(vimx.#F
.data c`S+>:
szCaption db 'A MessageBox!',0 {^;7DV:
szText db 'Hello,world!',0 ?uJX
;代码段 2Ir*}s2{
.code e$Yvy>I'tS
start: G^VOA4
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Sj/v:
invoke ExitProcess,NULL ;:R2 P@6f
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 8D? $@!-
end start /yx)_x{
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BEGIN { print "Hello, world!" } gzW{h0iRr
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BASIC _.]mES|
传统版BASIC(例如GWBASIC): pAA)?/&oKV
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10 PRINT "Hello, world!" w0H#M)c
20 END .EjR<UU
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或在提示符输入: IBu\Sh-
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?"Hello, world!":END cmCD}Skk
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现代版BASIC(例如Quick BASIC): y
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Print "Hello, world!" kv?DE4=;
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以下的语句在Quick BASIC中同样有效: 1Q9Hs(s
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? "Hello,world!" >YF=6zq.`
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BCPL }o[<1+W(.
GET "LIBHDR" q j9q
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LET START () BE &^ s8V]^
$( _T8S4s8q
WRITES ("Hello, world!*N") Wy-y-wi:p
$) ;<b7kepR
C#)T$wl[E
yn<J>e
Befunge o"A)t=
"!dlrow olleH">v Q^05n$ tI
, `2x. -
^_@ GM)q\Hx{
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jk\V2x@DR
Brainfuck Y"s8j=1m
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Pq(LW(
+++++++++++++++.>.+++.------.--------.>+.>. cyabqx
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6
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C >@4AxV\
#include <stdio.h> 3kF+wifsz
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int main(void) CW/L(RQ
{ A9"!=/~
printf("Hello, world!\n"); ^\J-LU|"B
return 0; GY0OVAW6'c
} R2 J A(Hn
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C++ Z
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#include <iostream> [EZ=t k
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int main() |68/FJZ,5
{ -O-?hsV)y
std::cout << "Hello, world!" << std::endl; g4 +Hq *
return 0; &uBfsa$
} B8.}9
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C++/CLI zzW$F)X
int main() l]&x~K}
{ nvNF~)mu
System::Console::WriteLine("Hello, world!"); + DE/DR:
} &1`Y&x:p
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C# (C Sharp) Xrpvq(]
class HelloWorldApp C>,> _
{ 5tLb
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public static void Main() |Sua4~yL(
{ =#<bB)59
System.Console.WriteLine("Hello, world!"); X{ 6a
} BB(v,W
} $4)L~g|
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COBOL UTN[!0[
IDENTIFICATION DIVISION. .P?n<n#
PROGRAM-ID. HELLO-WORLD. 2Yd@V}
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ENVIRONMENT DIVISION. 9e
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DATA DIVISION. v'^}zO
5IFzbL#q#f
PROCEDURE DIVISION. +/]*ChrS
DISPLAY "Hello, world!". }#g+~9UK
STOP RUN. X-TGrdoX
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;#0$iE
Common Lisp D. x8=|;
(format t "Hello world!~%") gNA!)}m\
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DOS批处理 EYCZuJxv
@echo off EV w {G<
echo "Hello, world!" D<<q5gG
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Eiffel V7p
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class HELLO_WORLD IXR'JZ?fH
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creation
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make bQwG"N
feature E'(nJ
make is ZU+_nWnl
local /;1O9HJa
io:BASIC_IO Hz==,NR-W
do #:/27
!!io ,&o^}TFkg
io.put_string("%N Hello, world!") _G'A]O/BZD
end -- make x#zj0vI-8
end -- class HELLO_WORLD A,=>
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Erlang i1m>|[@k
-module(hello). F[!%,-*
-export([hello_world/0]). tm2lxt
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hello_world() -> io:fwrite("Hello, World!\n"). EBz4k)@m
Z2H bAI8
U,61 3G
Forth nKnrh]hX
." Hello, world!" CR cs9h\]ZA
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hlze]d?z
Fortran bqp^\yu-E
WRITE(*,10) 2k^rZ^^"
10 FORMAT('Hello, World!') }Q ]-Y :
STOP @pYC!;n+
END la!U
-"i$^Q`
;BT7pyu%[
HTML 8e,F{>N
<HTML> N mxh zjJ
<HEAD> lcjOBu
<TITLE> Hello World! </TITLE> 4>v O9q
</HEAD> j6XHH&ZEb
<BODY> m.1-[ 2{8~
<p>Hello World!</p> J:&.[
</BODY> v>Kh5H5e~
</HTML> g;6/P2w
B, H9EX
D_ ~;!^
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H ZX1/6|_
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INTERCAL #)twk`!^
PLEASE DO ,1 <- #13 X"r.*fb;N
DO ,1 SUB #1 <- #238 YZSQOLN{
DO ,1 SUB #2 <- #112 Ldv,(ZV,<
DO ,1 SUB #3 <- #112 o$+R
DO ,1 SUB #4 <- #0 -1v9
DO ,1 SUB #5 <- #64 &ni#(
DO ,1 SUB #6 <- #238 6DK).|@$r
DO ,1 SUB #7 <- #26 u~Po5W/i
DO ,1 SUB #8 <- #248 gW--[
DO ,1 SUB #9 <- #168 >wt.)c?5
DO ,1 SUB #10 <- #24 kD%MFT4
DO ,1 SUB #11 <- #16 y %61xA`#
DO ,1 SUB #12 <- #158 bu_@A^ys
DO ,1 SUB #13 <- #52 d,(q3
PLEASE READ OUT ,1 |uw48*t
PLEASE GIVE UP Fw{@RQf8
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Java vc p{Gf|^
public class Hello ~OPBZ#
{ ytjZ7J['{
public static void main(String[] args) [MwL=9;!H
{ RLF6Bc
System.out.println("Hello, world!"); KB :JVK^ <
} b\9}zmG[u
} =P<7tsSuoK
+}0/ %5 =1
2AI~Jm#
JSP 6N'v`p8
<% '\.fG\xD
out.print("Hello, world!"); ,XNz.+Ov
%> 'uw=)8t7
Kr|9??`0E
elf2!
MIXAL \"@BZ.y
TERM EQU 19 the MIX console device number ht%:e?@i
ORIG 1000 start address v-mhqhb
START OUT MSG(TERM) output data at address MSG \sZ!F&a~
HLT halt execution Fm3B8Int
MSG ALF "MIXAL" fPW(hb;
ALF " HELL" #^fDKM
ALF "O WOR" \d#|n u
ALF "LD " c31k%/.
END START end of the program &}G2;O}3
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