“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!tR>NMH
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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》。 mE"(d*fe'
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以下是用不同语言写成的Hello World程序的几个例子: u(W>HVEG
Ada vC^Ul
with Ada.Text_Io; use Ada.Text_Io; QtHK`f>4#n
procedure Hello is 1`Z:/]hl
begin joA>-k04
Put_Line ("Hello, world!"); lJvfgP-j
end Hello; q x5jaa3
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汇编语言 8hV>Q
xp*Wf#BF
x86 CPU,DOS,TASM A1Es>NK[qW
MODEL SMALL 2`^M OGYk
IDEAL
MFyi#nq
STACK 100H V7<w9MM
fnJx$PD~
DATASEG .k -!/ ^
HW DB 'Hello, world!$' GLp~SeF#
w,*#z
CODESEG &|fPskpy
MOV AX, @data i~"lcgoO
MOV DS, AX vd9PB N
MOV DX, OFFSET HW qDS~|<Y5
MOV AH, 09H qm/#kPlM
INT 21H Hkrh d
MOV AX, 4C00H 50e
vWD
INT 21H uCx6/n6'
END ujW C!*W(Q
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x86 CPU,GNU/Linux,NASM Q_6v3no1
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). BU<Qp$&
;Enter this into "hello.asm" then type: $9@3dM*E?Z
;"nasm -f elf hello.asm" o&$Of
;"ld hello.o -o hello" 6 \?GY
;"./hello" V'FKgzd
#Xk/<It
section .data ;data section declaration 8I~*9MUp
msg db 'Hello World!',0AH OIs!,G|
len equ $-msg ;string length {)I&&fSz
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section .text ;code section declaration GdM|?u&s"
global _start ;entry point (start of execution) Mtaky=l8~I
_start: mov edx,len ;string length ,&iEn}xG7i
mov ecx,msg ;string start /b]+RXvxj
mov ebx,1 ;file handle: stdout #y8Esik
mov eax,4 ;sys_write ^|%N _ s
int 80h ;kernel system call XMF#l]P
kl|m @Nxp
mov ebx,0 ;return value BPSie0
mov eax,1 ;sys_exit +3J5j+
int 80h ;kernel system call uHuL9Q^
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x86 CPU,Windows,MASM32 Et'&}NjI
.386 \I7&F82e
.model flat,stdcall *QT7\ht3
option casemap:none !jR 1!i
;Include 文件定义 p'kB1)~|
include windows.inc 4}t$Lf_
include user32.inc ]P2Wa
includelib user32.lib Wb5n> *
include kernel32.inc N97WI+`
includelib kernel32.lib !jg<
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;数据段 g*WY kv
.data *|,ye5"
szCaption db 'A MessageBox!',0 lQL/I[}
szText db 'Hello,world!',0 B$G9#G6pZ
;代码段 h^f?rWD:nz
.code 7g4IAsoD
start: |[@v+koq
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK >CYz6G j
invoke ExitProcess,NULL _4LDzVjNRe
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ?]\v%[ho
end start ybcCq]cgt
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BEGIN { print "Hello, world!" } n[7=
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BASIC ^qtJcMK+hq
传统版BASIC(例如GWBASIC): ${tBu#$-d
'DUYf5nF
10 PRINT "Hello, world!" +hIMfhF
20 END 7-}/{o*,5
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或在提示符输入: ;Ouu+#s
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?"Hello, world!":END SQ`KR'E
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现代版BASIC(例如Quick BASIC): ^x_+&
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Print "Hello, world!" )gG_K$08?
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以下的语句在Quick BASIC中同样有效: <%"CQT6g%
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? "Hello,world!" #"TL*p
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BCPL zLjQ,Lp.I
GET "LIBHDR" H,)2Ou-Wn
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LET START () BE Zb2.o5#}
$( "9,+m$nj
WRITES ("Hello, world!*N") =BBqK=W.d
$) ,Z(J; ~
4x$Ts %]
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Befunge 0T:ZWRjH
"!dlrow olleH">v vl5r~F
, mam(h{f$
^_@ Ns-3\~QSi
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mk
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Brainfuck {&h=
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< !%'c$U2
+++++++++++++++.>.+++.------.--------.>+.>. AAK}t6
#+;0=6+SM
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C $,jynRk7q
#include <stdio.h> 74a>}+"
[4HOWM>\
int main(void) ANd#m9(x
{ vUgo)C#<
printf("Hello, world!\n"); L)_L#]Yy
return 0; sX]ru^F3
} C6c]M@6
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C++ #zKF/H|_R
#include <iostream> -;U3$[T,J7
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int main() lR3JyYY{X
{ J,^e q@(
std::cout << "Hello, world!" << std::endl; v,mn=Q&9
return 0; ?)XPY<
} ^BQ*l5K
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C++/CLI ' q{|p+
int main() \"mLLnK?
{ oW8 hC
System::Console::WriteLine("Hello, world!"); 9h'klaE(
} B#(2,j7M
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C# (C Sharp) }P"JP[#E\
class HelloWorldApp 8(0q,7)y
{ G1:2MPH
public static void Main() Qrt> vOUE7
{ ;Z}V}B
System.Console.WriteLine("Hello, world!"); GA@Zfcg
} .\b# 0w
} xZ(VvINL'
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COBOL `xd{0EvF
IDENTIFICATION DIVISION. cG I^IPI
PROGRAM-ID. HELLO-WORLD. "e~"-B7(\Y
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ENVIRONMENT DIVISION. 9oJ=:E~CP
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DATA DIVISION. _sp/RU,J-3
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PROCEDURE DIVISION. '}T6e1#JV
DISPLAY "Hello, world!". =H2.1 :'
STOP RUN. ;&G8e*bM2
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C~a-R#
Common Lisp \i$WXW]|
(format t "Hello world!~%") rWMG_eP:
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DOS批处理 o%\pI%
@echo off ok7yFm1\
echo "Hello, world!" @}@J$ g
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OA3* "d*
Eiffel &GH,is
class HELLO_WORLD R2$;f?;:
~#jD/
creation B?)=d,E
make FGG7;0(
feature v(2|n}qY
make is |,Xrt8O/[
local ghd*EXrF
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io:BASIC_IO 1f^4J~{
do C) "|sG
!!io TGe{NUO
io.put_string("%N Hello, world!") {Jl W1;Jc7
end -- make -w:F8k ~
end -- class HELLO_WORLD *k#M;e
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Erlang aD:vNX
-module(hello). KW.QVBuVO#
-export([hello_world/0]). (C
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hello_world() -> io:fwrite("Hello, World!\n"). uZ(j"y
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Forth `Vqpo/
." Hello, world!" CR Q}MS $[y
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Fortran |Skk1#
WRITE(*,10) 9ZEF%&58Y
10 FORMAT('Hello, World!') //}[(9b'\
STOP /U#{6zeM[,
END Xbb('MoI63
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HTML 9\]%N;;Lo
<HTML> -
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<HEAD> . 787+J?
<TITLE> Hello World! </TITLE> AZCbUkq
</HEAD> @]H:=Q'gj
<BODY> gB\KD{E
<p>Hello World!</p> 9j[%Y?
</BODY> /v1Rn*VF!
</HTML> D$RQD{*
9
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INTERCAL y+XB
PLEASE DO ,1 <- #13 n(gw%w+\7
DO ,1 SUB #1 <- #238 0vs9# <&V
DO ,1 SUB #2 <- #112 q=5#t~?
DO ,1 SUB #3 <- #112 +FWkhmTv
DO ,1 SUB #4 <- #0 4 }l,F
DO ,1 SUB #5 <- #64 r2T-= XWB
DO ,1 SUB #6 <- #238 i[~oMwc&
DO ,1 SUB #7 <- #26 b0CtQe
DO ,1 SUB #8 <- #248 P{eL;^I
DO ,1 SUB #9 <- #168 hY.zwotH
DO ,1 SUB #10 <- #24 |-hzvuSX
DO ,1 SUB #11 <- #16 #KonVM(`
DO ,1 SUB #12 <- #158 rlvo&(a
DO ,1 SUB #13 <- #52 T6|zT}cb
PLEASE READ OUT ,1 O7shY4 Sr
PLEASE GIVE UP {@u;F2?
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Java x8sSb:N
public class Hello `":ch9rK
{ /!kKL$j
public static void main(String[] args) Y" s1z<?
{ Dq!Vo ;s2
System.out.println("Hello, world!"); cPxA
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} J 3fcnI
} 'Pudy\Ab
$-$^r;
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JSP ;/W;M> ^
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out.print("Hello, world!"); n\}!'>d'
%> |Ebwl] X2
~O~c^fLH(B
WlF"[mU-
MIXAL L{|V13?
TERM EQU 19 the MIX console device number m9UI3fBX
ORIG 1000 start address _yyQ^M/
START OUT MSG(TERM) output data at address MSG 8YAUy\
HLT halt execution 0+0+%#?
MSG ALF "MIXAL" e g#.f`
ALF " HELL" u0^:
XwZ!
ALF "O WOR" q"5iza__H
ALF "LD " q&Sd+y&