“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。 \w@ "`!%
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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》。 `CEHl &w
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以下是用不同语言写成的Hello World程序的几个例子: 8Nf%<nUv
Ada /:aY)0F0<&
with Ada.Text_Io; use Ada.Text_Io; _2S(
*
procedure Hello is ft4(^|~
begin 32,Y3!%
Put_Line ("Hello, world!"); )Es|EPCx!
end Hello; sxU
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汇编语言 5*Y(%I<
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x86 CPU,DOS,TASM #?RT$L>n
MODEL SMALL i~EFRI@
IDEAL _B^Q;54c
STACK 100H : ]~G9]R`
8A2 _4q@34
DATASEG R"qxT.P(
HW DB 'Hello, world!$' xIa8Ac
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CODESEG 3g5
n>8-
MOV AX, @data /X97dF)zt
MOV DS, AX 59M\uVWR
MOV DX, OFFSET HW B)u*c]<qU
MOV AH, 09H @ZGD'+zd?
INT 21H uBfSS\SX|
MOV AX, 4C00H Ex$i8fO(
INT 21H o)
,1R:
END jZ> x5 W
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sZR
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x86 CPU,GNU/Linux,NASM {:c5/
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). |#`qP^E
;Enter this into "hello.asm" then type: me&'BQ
;"nasm -f elf hello.asm"
{Z(kzJwN
;"ld hello.o -o hello" :c`Gh< u
;"./hello" vAjvW&'g
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section .data ;data section declaration |tuh/e@dx
msg db 'Hello World!',0AH q!\4|KF~
len equ $-msg ;string length bGe@yXId5
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section .text ;code section declaration 4
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global _start ;entry point (start of execution) MI\35~JAN
_start: mov edx,len ;string length 'yR)z\)
mov ecx,msg ;string start BDz7$k]
mov ebx,1 ;file handle: stdout x3Ze\N8w
mov eax,4 ;sys_write &-hXk!A
int 80h ;kernel system call 7Nt6}${=z
[e;c)XS[
mov ebx,0 ;return value cMp#_\B
mov eax,1 ;sys_exit 6_kv~`"t Z
int 80h ;kernel system call nb}rfd.
-|_MC^)
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x86 CPU,Windows,MASM32 %,Lv},%Y
.386 |58xR.S'g
.model flat,stdcall 20A`]-D
option casemap:none /mCE=
;Include 文件定义 i-gN<8\v
include windows.inc G#nZ%qQ:I
include user32.inc ~X!Z+Vg
includelib user32.lib Wg!JQRHtT
include kernel32.inc {Etvu
includelib kernel32.lib yttaZhK^u
;数据段 kBg8:bo~
.data )uu1AbT+e
szCaption db 'A MessageBox!',0 9vI<\
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szText db 'Hello,world!',0 T1=T
;代码段 ?Es(pwJB
.code SZ(]su:
start: (]N- HN]v
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK L(+I
invoke ExitProcess,NULL U;#9^<^
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> T1#r>3c\
end start ZGj ^,? a
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BEGIN { print "Hello, world!" } ;9$71E
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BASIC ;7E
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传统版BASIC(例如GWBASIC): &OsO _F
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10 PRINT "Hello, world!" y,s`[=CT
20 END h yK&)y?~
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或在提示符输入: b|oT!s
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?"Hello, world!":END <NXJ&xs-+
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现代版BASIC(例如Quick BASIC): ApNS0
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Print "Hello, world!" .C,D;T{
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以下的语句在Quick BASIC中同样有效: vb`R+y@
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? "Hello,world!" @8*lqV2
#+#^cqjZ
n#^ii/H
BCPL h?'~/@
GET "LIBHDR" c*.-mS~Z`
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LET START () BE yQ0:M/r;0
$( Q@KCODi
WRITES ("Hello, world!*N") we8aqEomr
$) 7z q@T]
"fu:hHq
fPPC`d&Q3
Befunge 4i7+'F
"!dlrow olleH">v qWM+!f
, 5Mz:$5Tm
^_@ N@0cn
q:"
c{
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Brainfuck CorV!H4
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Xz`0nU
+++++++++++++++.>.+++.------.--------.>+.>.
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)$ M2+_c
C >#VNA^+t
#include <stdio.h> LwYWgT\e
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int main(void) lg
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{ JED\"(d(
printf("Hello, world!\n"); < 1[K1'7h
return 0; \@[,UZ
}
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C++ %Ai' 6
#include <iostream> _&%FGcAS
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int main() !<24Cy
{ $*|M+ofQ
std::cout << "Hello, world!" << std::endl; UmR4zGM}
return 0; ;y_ ]w6|n
} S5V:H Rj{?
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C++/CLI t)1`^W}
int main() dIfy!B"
{ 5|5p -B
System::Console::WriteLine("Hello, world!"); HuJc*op-6
} flT6y-d
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C# (C Sharp) "([/G?QAG
class HelloWorldApp h+ud[atk.
{ Z?xRSi2~7
public static void Main() IVY)pS"pR"
{ @{W"mc+
System.Console.WriteLine("Hello, world!"); |kP utB
} u"4B5D
} Evd|_ W-
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COBOL )+R n[MMp
IDENTIFICATION DIVISION. wZs 2aa
PROGRAM-ID. HELLO-WORLD. qV6WT&)T
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ENVIRONMENT DIVISION. [dAQrou6P
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DATA DIVISION. =3 Vug2*wd
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PROCEDURE DIVISION. K_@?Q@#YhR
DISPLAY "Hello, world!". :AS`1\ C
STOP RUN. e[16
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5;
Common Lisp S*$?~4{R
(format t "Hello world!~%") {`Gd
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DOS批处理 aydNSgu
@echo off a|"Uw
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echo "Hello, world!" g/fpXO\
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Eiffel s8)`wH?
class HELLO_WORLD UKQ"sC
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creation Px&_6}YWy
make 1Dl6T\20
feature > (9\ cF{
make is g4eW<
local a]T&-#c,}
io:BASIC_IO BjeD4
do Lm=;Y6'`N
!!io X fqhD&g
io.put_string("%N Hello, world!") Xh>($ U
end -- make ?:ZB'G{%E
end -- class HELLO_WORLD }Uwji
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Erlang I{jvUYrKH
-module(hello). )9:5?,SO
-export([hello_world/0]). (v%24bv
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hello_world() -> io:fwrite("Hello, World!\n"). @1Q-.54a
`/ayg:WSU
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Forth 0'fswa)
." Hello, world!" CR XS">`9o!
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Fortran @(~:JP?KNC
WRITE(*,10) dWPQp*f2
10 FORMAT('Hello, World!') s0^(yEcq
STOP \?d3Pn5`
END 4G?^#+|^
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HTML 3_~iq>l
<HTML> >
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<HEAD> lU%}_!tp3/
<TITLE> Hello World! </TITLE> L]|mWyzT
</HEAD> 7P7OTN
<BODY> Pps-,*m
<p>Hello World!</p> {@^;Nw%J
</BODY> *B"Y]6$
</HTML> Z(T{K\)uN
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w_xca(
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INTERCAL :Iv;%a0 -
PLEASE DO ,1 <- #13 )&Oc7\J,
DO ,1 SUB #1 <- #238 6JDHwV
DO ,1 SUB #2 <- #112 "|L"C+tE
DO ,1 SUB #3 <- #112 A913*O:\
DO ,1 SUB #4 <- #0 o)/Pr7Qn
DO ,1 SUB #5 <- #64 4=xi)qF/@
DO ,1 SUB #6 <- #238 !qj[$x-ns
DO ,1 SUB #7 <- #26 <4"-tYa
DO ,1 SUB #8 <- #248 La;G S
DO ,1 SUB #9 <- #168 }OL"38P
DO ,1 SUB #10 <- #24 `t&{^ a&Y"
DO ,1 SUB #11 <- #16 |)29"_Kk5
DO ,1 SUB #12 <- #158 "y,YC M`
DO ,1 SUB #13 <- #52 yZ|"qP1
PLEASE READ OUT ,1 `za,sRFR
PLEASE GIVE UP ]R#:Bq!F
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Java \ ;npdFy
public class Hello ,vJt!}}
{ HYmC3
public static void main(String[] args) tcuwGs>_
{ U]iI8c
System.out.println("Hello, world!"); QO/0VB42
} f'^uuO#x
} d,b4q&^X8
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`hi=y BO
JSP <+i(CGw
<% vxOqo)yO
out.print("Hello, world!"); gBm'9|?
%> B7C3r9wj
amu;grH
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MIXAL !Rn6x
$_
TERM EQU 19 the MIX console device number Ey&H?OFiP
ORIG 1000 start address d;Vy59}eY
START OUT MSG(TERM) output data at address MSG ~&i4