“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。 C7FQc{
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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》。 WFOJg&
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以下是用不同语言写成的Hello World程序的几个例子: dtC@cK/,D
Ada ~\_VWXXvIW
with Ada.Text_Io; use Ada.Text_Io; wQ/* f9
procedure Hello is \b"rf697,
begin 'RMUjJ-!
Put_Line ("Hello, world!"); NS[eQ_rT
end Hello; ^)Hf%
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汇编语言 l(?B0
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x86 CPU,DOS,TASM [s>3xWZ+a
MODEL SMALL fY!?rZ)$
IDEAL ?{S>%P A_B
STACK 100H .>B'oD
2!^=G=H/
DATASEG ! I@w3`
HW DB 'Hello, world!$' &:&89<C'
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CODESEG *p}mn#ru-
MOV AX, @data gF{ehU%
MOV DS, AX v|%41xOsr
MOV DX, OFFSET HW
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MOV AH, 09H lGd'_~'=
INT 21H 1ML L
MOV AX, 4C00H D~6[C:m
INT 21H %e E^Y<@g
END |h]V9=
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x86 CPU,GNU/Linux,NASM
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). pLB2! +
;Enter this into "hello.asm" then type: UCLM*`M
;"nasm -f elf hello.asm" 1INX#qTZ
;"ld hello.o -o hello" z'q~%1t
;"./hello" n%&L&G
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section .data ;data section declaration p R'J4~
msg db 'Hello World!',0AH
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len equ $-msg ;string length X.fVbePxUU
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\p
section .text ;code section declaration ^PZ[;F40
global _start ;entry point (start of execution) S<i$0p8J;
_start: mov edx,len ;string length rOSov"7
mov ecx,msg ;string start m-AF&( ;K
mov ebx,1 ;file handle: stdout x0
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o]r
mov eax,4 ;sys_write "I.6/9
int 80h ;kernel system call *-T.xo
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mov ebx,0 ;return value =}`d
mov eax,1 ;sys_exit ic2D$`M
int 80h ;kernel system call Je6[q
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x86 CPU,Windows,MASM32 ~:a1ELqVw
.386 UM7@c7B?
.model flat,stdcall {[H_Vl@
option casemap:none C*Vm}|)
;Include 文件定义 9{u8fDm!
include windows.inc {*yvvb
include user32.inc U#3N90,N=
includelib user32.lib 9-42A7g^C
include kernel32.inc }_D .Hy5
includelib kernel32.lib g*V.u]U!i
;数据段 ?xj8a3F
.data >fBPVu\PA
szCaption db 'A MessageBox!',0 /Y0~BQC7!
szText db 'Hello,world!',0 t dm7MPM
;代码段 PtfG~$h?
.code b RR N
start: UQl?_[G
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK @Q74
invoke ExitProcess,NULL j6qtR$l|
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 7V"?o
end start W'./p"2g
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AWK V[tebv!
BEGIN { print "Hello, world!" } YdhTjvx
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BASIC P#O"{+`
传统版BASIC(例如GWBASIC): A!lZyG!3
K.
;ev
10 PRINT "Hello, world!" t#NPbLZ
20 END FZ-Wgh
0z
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或在提示符输入: G+
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?"Hello, world!":END xs"i_se
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现代版BASIC(例如Quick BASIC): YkKu4f
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Print "Hello, world!" 2/?Zp=|j\
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以下的语句在Quick BASIC中同样有效: Wmbc
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? "Hello,world!" q<09]i
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BCPL #
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GET "LIBHDR" c9|4[_&B~
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LET START () BE [c?0Q3F
$( ;As~TGiT
WRITES ("Hello, world!*N") \RDN_Z
$) u3h(EAH>
g0,~|.
7Jb&~{DVk
Befunge $[T~<I
"!dlrow olleH">v $JFjR@j
, 2Io|?
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(TeH)j!
(PpY*jKR
Brainfuck x?Sx cQP
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< SgU@`Pb
+++++++++++++++.>.+++.------.--------.>+.>. +Y?Tr i
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#include <stdio.h> 0AnL]`"t.3
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int main(void) sUF$eVAT
{ 2zj`
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printf("Hello, world!\n"); HYl+xH'.j
return 0; %pZT3dcK
} "@x(2(Y&
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C++ A+/Lt>+AS
#include <iostream> Q4mtfpiDx
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int main() HS=w9:,
{ 29Uqdo
std::cout << "Hello, world!" << std::endl; gc4o
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return 0; s.z)l$
} 7] y3<t
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C++/CLI Gb^63.}
int main() i3 js'?7E
{ h),;j`PrC
System::Console::WriteLine("Hello, world!"); IsE&k2 SD
} {tVA(&\<
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;
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C# (C Sharp) Yyk~!G/@
class HelloWorldApp J.~@j;[2
{ }Z <I%GT
public static void Main() 1^k}GXsWmE
{ l<_v3/3
System.Console.WriteLine("Hello, world!"); !+$qSD,%x
} hx^@aI
} #o&T$D5
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COBOL thPAD+u.3
IDENTIFICATION DIVISION. #|\|G3Si
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PROGRAM-ID. HELLO-WORLD. WGV]O|
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ENVIRONMENT DIVISION. 3\2&?VAjR
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DATA DIVISION. z{R
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PROCEDURE DIVISION. 8h
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DISPLAY "Hello, world!". 0,0WdJAe
STOP RUN. @G&oUhS
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Common Lisp jzi%[c<G
(format t "Hello world!~%") *r>Y]VG;S
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bP:u`!p
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DOS批处理 q4:zr
@echo off "4XjABJ4'
echo "Hello, world!" !@V]H
#cR5k@
41R~.?
Eiffel X>dQK4!R
class HELLO_WORLD qA}l[:F+#
, wk}[MF
creation 1sUgjyGQ
make V^(W)\
feature 5P*jGOg .
make is qPu?rU{2
local ; <- f
io:BASIC_IO 3meZ]u
do P'}EZ'
!!io 89[/UxM)
io.put_string("%N Hello, world!") 8f,",NCgc
end -- make yJx,4be
end -- class HELLO_WORLD k8Dk;N
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Erlang N#J8 4i;ry
-module(hello). l2#~
-export([hello_world/0]). 6hcs)X7m
#E4oq9{0*W
hello_world() -> io:fwrite("Hello, World!\n"). ^g'uR@uU
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wKW.sZ!S1
Forth P EzT|uY
." Hello, world!" CR UeUOGf ,
B_!S\?}$
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Fortran "97sH_
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WRITE(*,10) f`}u9!jVR
10 FORMAT('Hello, World!') R]Fa?uQW
STOP QIwO _[Q
END s$^ 2Cuhv
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eT F s9$
HTML _)CCD33$
<HTML> 45+kwo0
<HEAD> MNfc1I_#
<TITLE> Hello World! </TITLE> g6q[
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</HEAD> j1JdG<n
<BODY> } BP.t$_
<p>Hello World!</p> r*7J#M /
</BODY> SM}&
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</HTML> NR^Z#BU
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INTERCAL 4YMUkwh
PLEASE DO ,1 <- #13 R<T5lkJ\/
DO ,1 SUB #1 <- #238 rp-.\Hl/a
DO ,1 SUB #2 <- #112 Ze`ms96j{
DO ,1 SUB #3 <- #112 pfk)_;>,
DO ,1 SUB #4 <- #0 kDKfJp&a
DO ,1 SUB #5 <- #64 ]{-ib:f~
DO ,1 SUB #6 <- #238 Si;eBPFH
DO ,1 SUB #7 <- #26 kKQD$g.z6
DO ,1 SUB #8 <- #248 %e:
hVU
DO ,1 SUB #9 <- #168 )q7!CG'oY
DO ,1 SUB #10 <- #24 f+Bv8 g
DO ,1 SUB #11 <- #16 QswFISch
DO ,1 SUB #12 <- #158 uCFpH5>
DO ,1 SUB #13 <- #52 'kCr1t
PLEASE READ OUT ,1 *xKY>E+
PLEASE GIVE UP R*"zLJP
&'5j!
}e1]Ib!
Java 6K.0dhl>`B
public class Hello H|N,nkhH}
{ {Cw>T-`
public static void main(String[] args) ~RM_c
{ xqKj&RuLu
System.out.println("Hello, world!"); [MM`#!K%
} uY)|
} j&?@:Zg v
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grCz@i
JSP CwzDkr&QC_
<% cZ/VMQEr
out.print("Hello, world!"); ;#2yF34gv
%> ma2-66M~j
p\|*ff0
LwCf}4u"
MIXAL b;e*`f8T3c
TERM EQU 19 the MIX console device number _K>YB>W}7
ORIG 1000 start address cr{f*U6`
START OUT MSG(TERM) output data at address MSG SR'u*u!
HLT halt execution _%aJ/Y0Cy
MSG ALF "MIXAL" P_c9v/
ALF " HELL" 9&KiG* .
ALF "O WOR" &q[`lIV, L
ALF "LD " G
Y ]bw
END START end of the program g"v-hTx
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<..直接输出..> &Sp2['a!
Hello, world! Oc?]L&a