“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。 T4V[RN
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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》。 HO266M
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以下是用不同语言写成的Hello World程序的几个例子: bh= \
Ada J>f
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with Ada.Text_Io; use Ada.Text_Io; 3q'K5}
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procedure Hello is +O|_P`HBoI
begin <ldid]o
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Put_Line ("Hello, world!"); c+szU}(f6(
end Hello; .Lr`j8
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汇编语言 JiKImz
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x86 CPU,DOS,TASM Q9`s_4
MODEL SMALL keT?,YI
IDEAL /- DKV~
STACK 100H C#A@)>
)v${&H
DATASEG &tlR~?$e*
HW DB 'Hello, world!$' B*9
fswZM\@
CODESEG Eem 2qKj
MOV AX, @data M.o?CX'
MOV DS, AX ,$HHaoog
MOV DX, OFFSET HW f2uZK!:m
MOV AH, 09H UqD5
A~w
INT 21H fdd~e52f
MOV AX, 4C00H PLO\L W
INT 21H "F&Tnhh4
END LTg?5GwD\j
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*Zc9yZl2
x86 CPU,GNU/Linux,NASM l)}<#Ri
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). /DLr(
;Enter this into "hello.asm" then type: 4qqF v?O[r
;"nasm -f elf hello.asm" x2sN\tOh^
;"ld hello.o -o hello" s ;48v
;"./hello" 2;&mkcK'
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section .data ;data section declaration 613/K`o
msg db 'Hello World!',0AH {]+ jL1
len equ $-msg ;string length \V._Z>]
9 1BY]N
section .text ;code section declaration `ffj8U
global _start ;entry point (start of execution) YavfjS:2
_start: mov edx,len ;string length HkW/G[7x&
mov ecx,msg ;string start lTn;3'
mov ebx,1 ;file handle: stdout 5fU!'ajaN7
mov eax,4 ;sys_write )URwIe{
int 80h ;kernel system call wG_4$kyj
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mov ebx,0 ;return value ;_x2Ymw
mov eax,1 ;sys_exit C#Y,r)l
int 80h ;kernel system call 4DvdEt
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x86 CPU,Windows,MASM32 K3Huu!Tr
.386 [0K=I64
z
.model flat,stdcall 1Pu
, :Jt
option casemap:none Q?Wr7
;Include 文件定义 ,Yo: &>As
include windows.inc {PL,VY)Z
include user32.inc BeAk21xb
includelib user32.lib 7^HpVcSM
include kernel32.inc rZ pbu>S
includelib kernel32.lib C=8H)Ef,l
;数据段 8a7YHUL<3i
.data QT_Srw@
szCaption db 'A MessageBox!',0 L+_8QK <
szText db 'Hello,world!',0 ^n
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;代码段 Xz8$Xz,O
.code {>S4#^@}
start: ldP3n:7FS
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK [qSQ#Qzi2i
invoke ExitProcess,NULL k9cK bf@
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> GX7VlI[
end start m{VL\ g)
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AWK /;+oz
BEGIN { print "Hello, world!" } 5Lw{0uLr
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BASIC ?.8<-
传统版BASIC(例如GWBASIC): DQcWq'yY^
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10 PRINT "Hello, world!" I I&<
20 END 5qGGu.$Ihi
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或在提示符输入: FWIih5 3`
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?"Hello, world!":END cY{I:MA+h@
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现代版BASIC(例如Quick BASIC): [@g ~
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Print "Hello, world!" c$/<l5Uw
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以下的语句在Quick BASIC中同样有效: CDJ$hu
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? "Hello,world!" ^[0"vtb
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STw oYn
BCPL bea|?lK
GET "LIBHDR" t~q?lT
f KHse$?_
LET START () BE
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$( I`3d;l;d
WRITES ("Hello, world!*N") _n7%df
$) h:_NA
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JXL'\De ;
Befunge )t5;d
"!dlrow olleH">v >n(F4C-pl
, TFYw
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R#D#{cC(
Brainfuck Y!F!@`%G
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 'bl%Y).9w
+++++++++++++++.>.+++.------.--------.>+.>. hc"6u\>
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C `6UtxJSx
#include <stdio.h> W5|j1He&
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int main(void) b##1hm~+9
{ uC)Zs, _5
printf("Hello, world!\n"); zqY)dk
return 0; ]uAS+shQ&
} (NPxab8e*
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C++ |J\,F.{'
#include <iostream> /;7ID41
h>| g2h
int main() 9?$RO[vo
{ x`#22"m
std::cout << "Hello, world!" << std::endl; ;c$@@l
return 0; 7r['
} 1EQvcw#
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C++/CLI &lU Ny
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int main() xuF5/(__
{ g[AA,@p+
System::Console::WriteLine("Hello, world!"); j!7Qw 8
} 1!d)PK>1$
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C# (C Sharp) w1cw1xX*
class HelloWorldApp brfKd]i
{ Ms,@t^nk
public static void Main() ETe-
{ "U*5Z:8?9
System.Console.WriteLine("Hello, world!"); YroNpu]s
} .x>HA^4
} g1ytT%]
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COBOL TqAtcAurM
IDENTIFICATION DIVISION. (U _wp's
PROGRAM-ID. HELLO-WORLD. qv$!\ T
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ENVIRONMENT DIVISION. SYeE) mI
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DATA DIVISION. M}u1qXa
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PROCEDURE DIVISION. Fav^^vf*1
DISPLAY "Hello, world!". -w\M-wc/$
STOP RUN. ljuNs@q
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Common Lisp b9DR%hO:
(format t "Hello world!~%") GY9y9HNZ
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=!<^^6LZ
DOS批处理 .$P|^Zx,
@echo off &>g~-s
echo "Hello, world!" N2[jO+6
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p&\K9hfi
Eiffel XddHP;x
class HELLO_WORLD McP~}"!^
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creation 6e<^oH
make HS7_MGU
feature Co[n--@C
make is Tt%}4{"
local Nq_A8Ph9
io:BASIC_IO -Uri|^t
do ZL=N[XW4'
!!io W_%W%i|
io.put_string("%N Hello, world!") ^4 8\>-Q\
end -- make e"~)Utk
end -- class HELLO_WORLD wA631kr
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rd">JEK;;
Erlang rw]yKH
-module(hello). XGhwrI ^
-export([hello_world/0]). |AC6sfA+
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hello_world() -> io:fwrite("Hello, World!\n"). P.h.MA]
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Forth 5j`v`[B;
." Hello, world!" CR M/} aq
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Fortran r6MB"4xd
WRITE(*,10) <6R"h-u"
10 FORMAT('Hello, World!') R1/q3x
STOP JjQVzkE
END xDUaHE1co
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HTML \lW_f{X)
<HTML> r:NH6tAL
<HEAD> ~~q}cywBk
<TITLE> Hello World! </TITLE> {_(+>v"eJ
</HEAD> hiN/S|JN8y
<BODY> lV)G@l[1
<p>Hello World!</p> >C# kqxfg
</BODY> <sc\EK
</HTML> h R~v
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INTERCAL 8YKQItK
PLEASE DO ,1 <- #13 o:9$UV[
DO ,1 SUB #1 <- #238 B2(,~^39
DO ,1 SUB #2 <- #112 3S;N(A4
DO ,1 SUB #3 <- #112 G0/>8_Q>Nr
DO ,1 SUB #4 <- #0 akCIa'>t
DO ,1 SUB #5 <- #64 ?+\E3}:
DO ,1 SUB #6 <- #238 yd*3)6=
DO ,1 SUB #7 <- #26 { *$9,
DO ,1 SUB #8 <- #248 auL^%M|$R
DO ,1 SUB #9 <- #168 |Euus5[
DO ,1 SUB #10 <- #24 K:_($X]
DO ,1 SUB #11 <- #16 {R8=}Qo
DO ,1 SUB #12 <- #158 [e1L{ _*l
DO ,1 SUB #13 <- #52 ^yJ:+m;6K
PLEASE READ OUT ,1 vI|As+`$d
PLEASE GIVE UP ESv:1o`?n
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Java dhtb?n{
public class Hello 1a8$f5
{ 8(Fu
public static void main(String[] args) 6v>z h
{ \igaQ\~
System.out.println("Hello, world!"); (tKMBxQo8
} `pm>'
} u|OtKq
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.`J:xL%Z
JSP ^mf jn-=3
<% U0IE1_R
out.print("Hello, world!"); u(2BQO7
%> ]7vf#1i<
tl^m=(ZQ
O,irpQ
MIXAL z mbZ
TERM EQU 19 the MIX console device number @c]Xh:I
ORIG 1000 start address */_@a?
START OUT MSG(TERM) output data at address MSG j3 P$@<
HLT halt execution eM }W6vIn
MSG ALF "MIXAL" u*2JUI*
ALF " HELL" ]|
WA#8_|
ALF "O WOR" Y`^o7'Z2^P
ALF "LD " .CS v|:'1
END START end of the program Xm@aYNV
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Nuva P7r4ePtLk{
<..直接输出..> C0(sAF@
Hello, world! 8t[t{"
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<..或者..> <+q$XL0
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<. Z
Xb}R^O-
// 不带换行 Y|RdzCM
? "Hello, world!" hVf^
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// 或者 =fWdk\Wv
vi|Zit
// 带换行 > UWStzH<
?? 'Hello, world!' ]]/lC
.> xiCN
qk3
WsB3SFNG
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OCaml DqlK.
let main () = 2LK]Q/WG,+
print_endline "Hello world!";; "teyi"U+
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'=#5(O%pp
Pascal 9-93aC.|}
program Hello; k%Eh{dA
begin i| 4_m
writeln('Hello, world!'); G"> 0]LQ
end. 2-s 7cXs
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