“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。 TAzhD.6C
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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》。 rvr Ok
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以下是用不同语言写成的Hello World程序的几个例子: pazFVzT
Ada y!aq}YS
with Ada.Text_Io; use Ada.Text_Io; ]Ff&zBJ
procedure Hello is ^'FY!^dE
begin F*I{?NRN1
Put_Line ("Hello, world!"); xQJdt$]U@
end Hello; 26\1tOj Np
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汇编语言 Uyi_B.:`
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x86 CPU,DOS,TASM
tb@/E
MODEL SMALL \>I&UFfH)4
IDEAL TR:D
STACK 100H "&C'K
4H1s"mP<
DATASEG =VY[m-q5
HW DB 'Hello, world!$' @~a52'\
?<F\S2W
CODESEG g<.VW0
MOV AX, @data Q) FL|
MOV DS, AX g7d) YUc
MOV DX, OFFSET HW Wigm`A=,r
MOV AH, 09H /- kMzL
INT 21H X8*q[@$
MOV AX, 4C00H YQYN.\
INT 21H BHFWig*{
END ~yO.R)4v
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//6m2a
x86 CPU,GNU/Linux,NASM y4envjl0
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). r}vI#;&
;Enter this into "hello.asm" then type: .g4bV5ma3
;"nasm -f elf hello.asm" f#^%\K:YYR
;"ld hello.o -o hello" M{z+=c&w
;"./hello" *M KVm)Iv
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section .data ;data section declaration 0HG*KW
msg db 'Hello World!',0AH e@X~F6nP
len equ $-msg ;string length O'5(L9,
B VPf8!-
section .text ;code section declaration KQr=;O\T
global _start ;entry point (start of execution) 5(U.<
_start: mov edx,len ;string length \6@}HFH
mov ecx,msg ;string start <cWo]T`X!
mov ebx,1 ;file handle: stdout $wX5`d1
mov eax,4 ;sys_write ^s24f?3
int 80h ;kernel system call Iem* 'r
9prG@
mov ebx,0 ;return value F /t;y\)
mov eax,1 ;sys_exit o*dhks[
int 80h ;kernel system call fT'A{&h|U
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x86 CPU,Windows,MASM32 cJH7zumM)
.386 (cA=~Bw[=
.model flat,stdcall S liF$}J
option casemap:none zHx?-Q&3
;Include 文件定义 xp,H5
m%
include windows.inc j[Et+V?
include user32.inc )ns;S
includelib user32.lib o.j;dsZ
include kernel32.inc (S(=W G
includelib kernel32.lib 8I~ H1
;数据段 Mb/R+:C`
.data (D~mmffY1
szCaption db 'A MessageBox!',0 rfCoi>{<
szText db 'Hello,world!',0 NG b`f-:jw
;代码段 E2dSOZS:)%
.code @zPWu}&m
start: n287@Y4Ru
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &f!!UZMt)
invoke ExitProcess,NULL ~[,E
i k
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 8@Y@5)Oc
end start 9N
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bg 7b!t1F
g[Yok`e[
AWK \W$>EH
BEGIN { print "Hello, world!" } qP]Gl--q{
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BASIC 3EzI~Zsx
传统版BASIC(例如GWBASIC): <Ojf&C^Z
=8<SKY&\X
10 PRINT "Hello, world!" V:IoeQ]-
20 END E7j]"\~ i
=>BT]WK>
或在提示符输入: |NM.-@1
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?"Hello, world!":END U8.DPRa
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现代版BASIC(例如Quick BASIC): i>0bI^H
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Print "Hello, world!" vbA9V<c&
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以下的语句在Quick BASIC中同样有效: HK
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? "Hello,world!" 1_<'S34
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..n-&(c32
BCPL N-vr_4{g
GET "LIBHDR" #>!!#e!*
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LET START () BE 6Lz&"C,`
$( Le_?x
WRITES ("Hello, world!*N") n1!u
aUC
$) #<l;YT8
WI~';dK2]
w`i3B@w
Befunge b}k`'++2,
"!dlrow olleH">v ?2.<y_1
, 3pl.<;9r
^_@ Y}F+4
==|//:: \
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Brainfuck h`jtmhoz
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ,wnF]K2D0
+++++++++++++++.>.+++.------.--------.>+.>. i\,#Z!
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9/Q5(P
C `bivAL
#include <stdio.h> K4oLb"gB1
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int main(void) *y.KD4@{
{ %Wu3$b
printf("Hello, world!\n"); ~2=B:;
return 0; IWKQU/l!
} 9I.="b=J)
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C++ t0hg!_$bq
#include <iostream> ?;}2Z)
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int main() {t9'8R3
{ @'~v~3
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std::cout << "Hello, world!" << std::endl; @XB/9!
return 0; B&<Z#C:I
} 8<IOX
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C++/CLI t[0gN:s
int main() =y^N'1q
{ cojuU=i
System::Console::WriteLine("Hello, world!"); W!+5}\?
} z)Bc91A
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Q- j+#NGc
C# (C Sharp) "TG}aS
class HelloWorldApp QiB:K Pz[
{ Z\`uI+`
public static void Main() 6(X(f;MEl
{ %'@&j2j>
System.Console.WriteLine("Hello, world!"); e|xRK?aVBu
} r@k&1*&
} hb[K.`g
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COBOL \>M3E
IDENTIFICATION DIVISION. -pyTzC$HO
PROGRAM-ID. HELLO-WORLD. ~?S/0]?c
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ENVIRONMENT DIVISION. 7e>n{rl
o'r?^ *W
DATA DIVISION. -*+7-9A I
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PROCEDURE DIVISION. Q+Jzab
DISPLAY "Hello, world!". |Y2u=B
STOP RUN. +>37'PD
$Jx]
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YV 2T$#7u
Common Lisp JtvAi\52$
(format t "Hello world!~%") dsrzXmE0
BTGPP@p4
M0 =K#/
DOS批处理 O z]iHe
@echo off k q_B5L ?
echo "Hello, world!" ,Cde5A{K
_q+H>1.&9
~B|K]&/]
Eiffel -hyY5!rD
class HELLO_WORLD M~p=OM<
+-K-CXt
creation YG!~v~sV
make oTT/;~ I
feature ;1K.SDj
make is )0~zL} )?
local gz
Qc
io:BASIC_IO 7s1FJm=Y/
do )t&j0`Yq
!!io $oe:km1-D
io.put_string("%N Hello, world!") R\
<HR9 r
end -- make ~ex1,J*}t
end -- class HELLO_WORLD E0Ig/
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Erlang $hn#T#J3
-module(hello). 4*G#fW-
-export([hello_world/0]). Mp}aJzmkB;
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hello_world() -> io:fwrite("Hello, World!\n"). g]N!_Ib/!
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M.[hq
[*]&U6\j
Forth ?%{v1(
." Hello, world!" CR j[
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M&:[3u-
Ihw^g<X
Fortran Yfs60f
WRITE(*,10) t1wNOoRa
10 FORMAT('Hello, World!') %N=-i]+Id
STOP oj;Rh!O
END fiES6VL
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HTML 6;"jq92in*
<HTML> R>BnUIu
<HEAD> -5\hZ!!J2
<TITLE> Hello World! </TITLE> ^fQ ]>/u
</HEAD> oZQ%P
<BODY> LlrUJ-uC7
<p>Hello World!</p> 2dFC{US'
</BODY> 48Vmz
</HTML> Q+$+{g-8
_2R;@[f2
~jQ|X?tR
HQ9+ 7%b?[}y4
H mr,IP=e~
S bc
/YKg.DA|
INTERCAL [daUtKz
PLEASE DO ,1 <- #13 q5p!Ty"
DO ,1 SUB #1 <- #238 ,73J#
DO ,1 SUB #2 <- #112 pIXbr($
DO ,1 SUB #3 <- #112
")q
DO ,1 SUB #4 <- #0 LK-2e$1
DO ,1 SUB #5 <- #64 )Gi!wm>zvN
DO ,1 SUB #6 <- #238 2g$PEwXe
DO ,1 SUB #7 <- #26 6F(;=iY8
DO ,1 SUB #8 <- #248 A9`& Wnw?
DO ,1 SUB #9 <- #168 2"cUBFc1I
DO ,1 SUB #10 <- #24 @!1o +x
DO ,1 SUB #11 <- #16 z'z_6]5
DO ,1 SUB #12 <- #158 K-cRNt
DO ,1 SUB #13 <- #52 Y`eU WCD
PLEASE READ OUT ,1 (J
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PLEASE GIVE UP 2f2Vy:&O_
\fj*.[,
A NR?An
Java |08b=aR6ro
public class Hello 1MkQ$v7m
{ wJ,l"bnq
public static void main(String[] args) dfAnO F"-
{ P-[6'mw`
System.out.println("Hello, world!"); Ha>Hb`
} Ka%u#};
} gY9HEfB
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