“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。 dC+WII`V
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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;RP/"7
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以下是用不同语言写成的Hello World程序的几个例子: HZ%2WM
Ada -Uj)6PzGu
with Ada.Text_Io; use Ada.Text_Io; %L(;}sJ.
procedure Hello is SR)jJ=R3
begin mQ(6ahD U
Put_Line ("Hello, world!"); ,F}\njL
end Hello; tDw(k[aK@
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汇编语言 b7-M'-Km0_
;;>hWAS
x86 CPU,DOS,TASM rywui10x*
MODEL SMALL pUbf]3 t
IDEAL L_4c~4
STACK 100H ; '6`hZ
WEy$SN+P
DATASEG {3,_i66
HW DB 'Hello, world!$' u}_,4J
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CODESEG TOF_m$@#
MOV AX, @data 4mHR+SZy
MOV DS, AX V9KI?}q:W
MOV DX, OFFSET HW 5PF?Eq
MOV AH, 09H 0PdeK'7
INT 21H E3..$x-/
MOV AX, 4C00H M9[52D!{
INT 21H P;~`%,+S
END ?X
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x86 CPU,GNU/Linux,NASM rK` x<
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). P ?^h
;Enter this into "hello.asm" then type: SXqWq
;"nasm -f elf hello.asm" FR*CiaD1
;"ld hello.o -o hello" &~4;HjS
;"./hello" }+mIP:T
#BPJRNXd
section .data ;data section declaration eR1SPS1+
msg db 'Hello World!',0AH ,s ` y
len equ $-msg ;string length Z%&$_-yJ
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section .text ;code section declaration \NZ(Xk
global _start ;entry point (start of execution) >T{Gl/? p
_start: mov edx,len ;string length M[eq)a$
mov ecx,msg ;string start 3{:AG,G
mov ebx,1 ;file handle: stdout WZ@hP'Zc
mov eax,4 ;sys_write I1f4u6\*X
int 80h ;kernel system call }xx"
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mov ebx,0 ;return value \_vjc]?
mov eax,1 ;sys_exit a7Mn/ i.
int 80h ;kernel system call "FD`1
\p4>onGI
srbES6
x86 CPU,Windows,MASM32 hZZ
.386 R!)3{cjU@
.model flat,stdcall T 6ihEb$C
option casemap:none ^Uq%-a
;Include 文件定义 mV>l`&K=
include windows.inc we("#s1=
include user32.inc isBtJ7 \Sc
includelib user32.lib Bm>>-nG;
include kernel32.inc rtSG-_[i
includelib kernel32.lib ]3D>ai?
;数据段 gPE`mE
.data uqotVil,
szCaption db 'A MessageBox!',0 nsA}A~(E
szText db 'Hello,world!',0 jT'09r3P
;代码段 60\`TsFobT
.code PEr &|H2
start: r5,V-5b
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Tv[h2_+E
invoke ExitProcess,NULL a Fh9B\n
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> !{1;wC(b
end start olv0w;s
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BEGIN { print "Hello, world!" } L*6R5i>
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BASIC 0:iR=S
传统版BASIC(例如GWBASIC): #lfW0?Y'
oBS m>V
10 PRINT "Hello, world!" p3,m),
20 END [%c5MQ?H
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或在提示符输入: _j\GA6
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?"Hello, world!":END \Ota~A
sRI0;
现代版BASIC(例如Quick BASIC): +$YHdgZ.
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Print "Hello, world!" ZX8AB
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以下的语句在Quick BASIC中同样有效: Jn&^5,J]F8
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? "Hello,world!" v]GQb
1 2VSzIm
S[;d\Z]~
BCPL }`pxs
GET "LIBHDR" oh0*b h
-Hh.8(!XoO
LET START () BE p:NIRs
$( GYt|[GC
WRITES ("Hello, world!*N") )61X,z
$) <nk9IAH
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c
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Befunge ^]NFr*'!
"!dlrow olleH">v JKz]fgOd$
, X \BxRgl},
^_@ O?`_RN4l
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Brainfuck :V0sKg|sS
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7'!DK;=TD6
+++++++++++++++.>.+++.------.--------.>+.>. oCxy(q'y
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C msVi3`q~
#include <stdio.h> Qt\^h/zjG
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int main(void) vD^Uod1
{ FEO/RMh
printf("Hello, world!\n"); z5J$".O`
return 0; mb>8=hMg
} .(7m[-iF!
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C++ (DkfLadB
#include <iostream> U1W8f|u
:6qt[(<"
int main() ? _7iL?
{ &;naaV_2T
std::cout << "Hello, world!" << std::endl; TT oW>RP#
return 0; %i.Prckrb
} fZp3g%u
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C++/CLI X4<Y5?&0
int main() {TZV^gT4
{ DB+oCE<.#
System::Console::WriteLine("Hello, world!"); s o7.$]aV
} FeNNzV=
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C# (C Sharp) N F,<^ u
class HelloWorldApp "&/lF[q
{ @A|#/]S1
public static void Main() mqtYny'
{ &3OV|ly]
System.Console.WriteLine("Hello, world!"); R;zf x/
} uO)vGzt3^x
} 2;K2|G7
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COBOL 2wJa:=$
IDENTIFICATION DIVISION. 7GvMKtuSK
PROGRAM-ID. HELLO-WORLD. k;Fxr%
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ENVIRONMENT DIVISION. nkzH}F=<
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DATA DIVISION. cua ( w
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PROCEDURE DIVISION. WXY-]ir.
DISPLAY "Hello, world!". =!G{+&j
STOP RUN. S0tkqA4
0g;)je2_2?
?./%7v
Common Lisp |\>Ifv%{
(format t "Hello world!~%") 1ASoH,D/
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xf{ZwS%X
DOS批处理 CEVisKcE:
@echo off -Jf}3$Ra
echo "Hello, world!" 1aZGt2;
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w"37sv
Eiffel H>Ucmd;ay
class HELLO_WORLD dUUg}/
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creation wD:2sri
make :cf#Tpq"
feature r@}8TE*|P
make is FU(2,Vl
local eL<jA9cJ9
io:BASIC_IO gZiwXb
do ;XQ27,K&
!!io 8rjD1<
io.put_string("%N Hello, world!") sm;kg=
end -- make Cg|\UKfy$
end -- class HELLO_WORLD s7 sTY
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Erlang <k0/O
-module(hello). ?bpVdm!
-export([hello_world/0]). -:kIIK
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hello_world() -> io:fwrite("Hello, World!\n"). 7<Qmpcp =
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Forth /2
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." Hello, world!" CR &po!X )
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Fortran 1*|/N}g)
WRITE(*,10) +,]VXH<y
10 FORMAT('Hello, World!') !!ma]pB,
STOP *Hi}FI
END
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>t<\zC|~w
r6R@"1/
HTML c-v-UO%
<HTML>
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<HEAD> B=$O4nW_b
<TITLE> Hello World! </TITLE> ?z <-Ww
</HEAD> HOF=qE*p
<BODY> =LODX29
<p>Hello World!</p>
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</BODY> i(OeE"YA
</HTML> 6B%
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H Tv#2WX
QxN1N^a0
INTERCAL qE|syA9
PLEASE DO ,1 <- #13 .ANR|G
DO ,1 SUB #1 <- #238 hSR+7qN<e
DO ,1 SUB #2 <- #112 c/ih%xR
DO ,1 SUB #3 <- #112 h5pfmN\-5
DO ,1 SUB #4 <- #0 sei2\l8q
DO ,1 SUB #5 <- #64 PEm2w#X%L
DO ,1 SUB #6 <- #238 u1Slu%^e
DO ,1 SUB #7 <- #26 {~uTi>U
DO ,1 SUB #8 <- #248 d=n{Wn{C
DO ,1 SUB #9 <- #168 b$%Kv(
DO ,1 SUB #10 <- #24 E4>}O;m0
DO ,1 SUB #11 <- #16 qv}ECQ
DO ,1 SUB #12 <- #158 &oq0XV.M^
DO ,1 SUB #13 <- #52 ><Zu+HX
PLEASE READ OUT ,1 q5L^>"
PLEASE GIVE UP ."=%]l0
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Java AS@(]T#R
public class Hello 2%L`b"9}V
{ beC%Tnb7
public static void main(String[] args) )XGz#C_P
{ Lt=32SvTn
System.out.println("Hello, world!"); \/?J)k3H.
} =4co$oD}
} |/^S%t6*
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JSP =>B"j`oR
<% w$AR
out.print("Hello, world!"); Eu:/U*j
%> C}pm>(F~
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MIXAL QnD8L.Dg
TERM EQU 19 the MIX console device number _@!vF,Wcf
ORIG 1000 start address &