“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。 Er^ijh,
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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》。 *gfx'$
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以下是用不同语言写成的Hello World程序的几个例子: ce th )Xm
Ada L&ySXc=
with Ada.Text_Io; use Ada.Text_Io; >B/ jTn5=
procedure Hello is 5n!
V^ !
begin 3US}('
Put_Line ("Hello, world!"); +gqtW86
end Hello; \?7)oFNz
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汇编语言 U1bhd}MoR
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x86 CPU,DOS,TASM n#t{3qzpD
MODEL SMALL 87P{vf#
IDEAL [~9rp]<
STACK 100H '#gd19#
Og[NRd+
DATASEG jOj`S%7
HW DB 'Hello, world!$' ,0%P3
&M(=#pq9
CODESEG /=I&-gxC
MOV AX, @data 90L,.
MOV DS, AX ^IGutZov
MOV DX, OFFSET HW {I+
MOV AH, 09H HMGby2^+
INT 21H ;SoKX?up5
MOV AX, 4C00H i <0H W
INT 21H |@?B%sY
END a3e<<<Z>R
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x86 CPU,GNU/Linux,NASM &QO~p3M
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Ab`mID:
;Enter this into "hello.asm" then type: P/snzm|@
;"nasm -f elf hello.asm" UOHU1.3$T
;"ld hello.o -o hello" rU<NHFGj4
;"./hello" s''?:
+
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section .data ;data section declaration D,%R[F?5O
msg db 'Hello World!',0AH Ug02G
len equ $-msg ;string length e\x=4i
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section .text ;code section declaration x'kwk
global _start ;entry point (start of execution) N p9N#m?
_start: mov edx,len ;string length >FED*C4
mov ecx,msg ;string start f>\OT
mov ebx,1 ;file handle: stdout w='1uV<6
mov eax,4 ;sys_write ;ZZ%(P=-
int 80h ;kernel system call \~!9T5/*
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mov ebx,0 ;return value Q<W9<&VZe
mov eax,1 ;sys_exit Jv1igA21_h
int 80h ;kernel system call ?Q1(L$-=
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x86 CPU,Windows,MASM32 cnr&%-
.386 hgMh]4wN*
.model flat,stdcall "]J4 BZD
option casemap:none ^]c/hb|X
;Include 文件定义
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include windows.inc 3|zqEGT*
include user32.inc Cc*"cQe
includelib user32.lib wLwAtjW)
include kernel32.inc 1];rW`Bw
includelib kernel32.lib Nw ;BhBt
;数据段 fD+'{ivN4
.data csE 9Ns
szCaption db 'A MessageBox!',0 7NC"}JB&
szText db 'Hello,world!',0 g+Vfd(e
;代码段 su.hmc
.code nM:e<`r
start: p'UY Ht
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK {N1Ss|6
invoke ExitProcess,NULL wuE] ju<
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fy04/_,q
end start D>M
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Qj: D=j8
AWK '7G'R
BEGIN { print "Hello, world!" } cmgI,n-o?
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BASIC 2%4dA$H#4w
传统版BASIC(例如GWBASIC): &.z: i5&o!
MMCac6;Aea
10 PRINT "Hello, world!" L6`(YX.:
20 END Eyi^N0
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或在提示符输入: (dD+?ZOO
#(&!^X3
?"Hello, world!":END usEdp
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现代版BASIC(例如Quick BASIC): A6ipA/_
-=BQVJ_dK{
Print "Hello, world!" .Tr!/mf_
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以下的语句在Quick BASIC中同样有效: i? 5jl&30
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? "Hello,world!" +F3@-A
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BCPL JU+Uzp
GET "LIBHDR" #<df!)
{^>dQ+S x7
LET START () BE K6<@DP+/
$( y1R53u`;L
WRITES ("Hello, world!*N") I>ks H
$) X`bN/sI
^@?-YWt
n'R9SnW
Befunge $"&0
"!dlrow olleH">v am,UUJ+h>
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^_@ ;u`zZb=,[
Q\>9PKK
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Brainfuck ,]HH%/h
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< D?;8bI%"
+++++++++++++++.>.+++.------.--------.>+.>. >zcR ?PPs
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;=\vm"I?
C LWgYGXWT"
#include <stdio.h> !K a!f1
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int main(void) q\wT[W31@
{ t.wB\Kmt\
printf("Hello, world!\n"); w@&g9e6E
return 0; &K2J$(.t
} .OFwGOL%
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C++ J6pQ){;6
#include <iostream> q]Y [W1
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int main() } LuPYCzpu
{ <=WSX{_D
std::cout << "Hello, world!" << std::endl; W,&z:z>
return 0; P.^%8L
} v+XB$j^H
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C++/CLI 57r?`'#*
int main() =xwA'D9]
{ !V|i\O|Q2
System::Console::WriteLine("Hello, world!"); Jlgo@?Lc
} W rvSYqN
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C# (C Sharp) <vS J<WY
class HelloWorldApp g+>$_s
{ b0W~*s [4
public static void Main() )Los\6PRn
{ /)I:Cz/f
System.Console.WriteLine("Hello, world!"); S[!sJ-rG
} ?kBi9^)N4
} AQX~do\A
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COBOL v:otR%yt
IDENTIFICATION DIVISION. p.{9OrH(4
PROGRAM-ID. HELLO-WORLD. .48Csc-
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ENVIRONMENT DIVISION. c_$9z>$
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DATA DIVISION. E-Z6qZ^
xWkCP2$?P
PROCEDURE DIVISION. &8VB{S>r
DISPLAY "Hello, world!". b[+G+V
STOP RUN. VQSwRL3B=
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Common Lisp &)F8i#M
(format t "Hello world!~%") =.vc={_?
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DOS批处理 8GpPyG
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@echo off _86pbr9
echo "Hello, world!" aD
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5Fh?YS =
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Eiffel 8yr_A[S8.
class HELLO_WORLD fq*.4s
#
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creation E]G#"EV!Y
make ~!o\uTVr
feature 3`y9V2&b
make is 4 3cdWd%
local tK9_]663
io:BASIC_IO 4
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do &?~OV:r9
!!io *>otz5]
io.put_string("%N Hello, world!") C.SGm
end -- make __x2xtrH
end -- class HELLO_WORLD C@!C='b,
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Erlang X\X*-.]{
-module(hello). GLI 5AbQK
-export([hello_world/0]). h\+U+?u
r!/=Iy@
hello_world() -> io:fwrite("Hello, World!\n"). !Jh/M^
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pqaQ% |<
Forth ]Z/<HP$#
." Hello, world!" CR Jjt'R`t%t
~G0\57;h
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Fortran CiE
WRITE(*,10) h-0sDt pR
10 FORMAT('Hello, World!') CD$0Z
STOP XXuIWIhm
END sT|$@$bN
pJM~'tlHV
&Nf10%J'<
HTML Tac7+=T
<HTML> /mMRV:pd
<HEAD> G8}w|'0m
<TITLE> Hello World! </TITLE>
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</HEAD> o*5<Cxg
<BODY> QR'yZ45n4
<p>Hello World!</p> KA )9&6
</BODY> =nQ"ye
</HTML> SKT f=rY
<~:Lp:6 J
F
Qtlo+3
HQ9+ bn`1JI@S4
H xyGk\= S
H{*~d+:ol
U1pL
`P1
INTERCAL o(~QuHOp8>
PLEASE DO ,1 <- #13 r^3QDoy
DO ,1 SUB #1 <- #238 %'2DEt??
DO ,1 SUB #2 <- #112 j{)_&|^{
DO ,1 SUB #3 <- #112 #X&`gDW
DO ,1 SUB #4 <- #0 .h)o\6Wq
DO ,1 SUB #5 <- #64 ,xA`Fu9^
DO ,1 SUB #6 <- #238 3QL I|VpO
DO ,1 SUB #7 <- #26 9NCo0!Fb
DO ,1 SUB #8 <- #248 Q+e|;Mj
DO ,1 SUB #9 <- #168 fIOI
DO ,1 SUB #10 <- #24 9}e`_z
DO ,1 SUB #11 <- #16 rUC@Bf
DO ,1 SUB #12 <- #158 FI@!7@
DO ,1 SUB #13 <- #52 2{!o"6t
PLEASE READ OUT ,1 }Dk*Hs^E
PLEASE GIVE UP H8[L:VeNT
/[f9Z:>V
L"Y_:l3"7
Java x!CCSM;q
public class Hello #KA,=J
{ ?)=A[
public static void main(String[] args) ]Lg$p
{ mjdZ^
System.out.println("Hello, world!"); u<`CkYT
} ?C#=Q6
} ;B[*f?y-
H]@M00C
|2mm@):
JSP h-B&m:gD_U
<% N*.JQvbnr
out.print("Hello, world!"); zZ3Ko3L%g_
%> YGVj$\
UEeD Nl$^u
?`PG`|2~
MIXAL zUg-M
TERM EQU 19 the MIX console device number -)%l{@Mr
ORIG 1000 start address ~9.0:Fm<
START OUT MSG(TERM) output data at address MSG 2BA'Zu`
HLT halt execution 9F8"(
MSG ALF "MIXAL" k@1\ULo
ALF " HELL" 0eQwi l@
ALF "O WOR" `Q d_Gu,M
ALF "LD " ha6jbni
END START end of the program T/NeoU3 p
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`usX(snY
Nuva R
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<..直接输出..> \$o5$/oU(
Hello, world! JTuU}nm+
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;
<..或者..> $bQ[H[4l
7~@q#]U[
<. w}="}Cb
// 不带换行 ;0lHi4 c0
? "Hello, world!" mfHZGk[[
/Jz?~H{%n
// 或者 ~(4;P%L:
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// 带换行 RJ/4T#b"+
?? 'Hello, world!' rwb7>]UI"d
.> u~Zx9>f
^J,Zl`N
gzS6{570
OCaml m,i@
let main () = >sW9n[
print_endline "Hello world!";; _U%a`%tU.
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aw
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Pascal (=n {LMa
program Hello; 3z$9jN/<u
begin \A@Mlpe&t
writeln('Hello, world!'); E/MD]ox
end. B5'-v%YO+
v8Ga@*
F91'5D,u0
Perl tOx)t$ix
#!/usr/local/bin/perl |E/r64T
print "Hello, world!\n"; 9VyY[&
R"NR-iU
J[6`$$l0
PHP rPf<8oH
<?php y7ng/vqM7
print("Hello, world!"); $)w9EGZ
?> `9IG//
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+P\
6CoDn(+z
Pike e nsou!l
#!/usr/local/bin/pike @VlDi1
int main() 0[(TrIpXl
{ N#(p_7M
write("Hello, world!\n"); ?7Kl)p3
return 0; <Sm@ !yx
} kXw&