“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。 T6nc/|Ot
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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》。 Fk`|?pQm
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以下是用不同语言写成的Hello World程序的几个例子: Nh[H[1"J
Ada C Ef*:kr
with Ada.Text_Io; use Ada.Text_Io; D%~"]WnZ\Q
procedure Hello is 9Yhlq$;g
begin rH$M6S
Put_Line ("Hello, world!"); @~&1!
end Hello; ~?zu5,vb
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汇编语言 ;Iax \rQ
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x86 CPU,DOS,TASM ?
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MODEL SMALL ok1-`c P
IDEAL !:c_i,N
STACK 100H GJIZu&C
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DATASEG BG_6$9y
HW DB 'Hello, world!$' ]]9VI0
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CODESEG Hq
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MOV AX, @data Y?AvcY.
MOV DS, AX \ 0/m$V.
MOV DX, OFFSET HW 3?Fe(!@
MOV AH, 09H #H;1)G(/
INT 21H m+QZ|
MOV AX, 4C00H cJ#n<Rsz
INT 21H *r)dtI*
END %$'Z"njO&
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x86 CPU,GNU/Linux,NASM "Pl.G[Buc-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). c)Ne/E{!0
;Enter this into "hello.asm" then type: s\ e b
;"nasm -f elf hello.asm" ?tkl
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;"ld hello.o -o hello" a7sX*5t{R
;"./hello" yG2rAG_G&
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section .data ;data section declaration w ufQyT`
msg db 'Hello World!',0AH n(#[[k9&Ic
len equ $-msg ;string length 49=L9:
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section .text ;code section declaration yp]z@SYA@
global _start ;entry point (start of execution) J"K(nKXO_?
_start: mov edx,len ;string length g>QN9v})
mov ecx,msg ;string start w[g`)8Ib
mov ebx,1 ;file handle: stdout e)$a ;6
mov eax,4 ;sys_write {hoe^07XK
int 80h ;kernel system call 4+:'$Nw
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mov ebx,0 ;return value i,2eoM)FB
mov eax,1 ;sys_exit 3LZvlcLb
int 80h ;kernel system call mhI
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x86 CPU,Windows,MASM32 45H9pY w
.386 Y/T-2)D
.model flat,stdcall =w7+Yt
option casemap:none \|C*b<
;Include 文件定义
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include windows.inc wW7# M
include user32.inc hjz`0AS
includelib user32.lib p\Fxt1Y@X
include kernel32.inc 3Xm>
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includelib kernel32.lib UAGh2?q2
;数据段 ;Irn{O
.data =7F?'&LC
szCaption db 'A MessageBox!',0 xy4P_
szText db 'Hello,world!',0 ~9#'s'
;代码段 q4g)/x%nc
.code K%UjPzPWw
start: W4(GI]`_+
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6Zx5^f(qd
invoke ExitProcess,NULL dEkAUH
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> h:i FLS f
end start &t6:1 T
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BEGIN { print "Hello, world!" } sF3@7~m4
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BASIC -/:K.SY,
传统版BASIC(例如GWBASIC): r}}2Kl
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10 PRINT "Hello, world!" sl:1P^b
20 END :q~5Xw/
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或在提示符输入: tT+W>oA/M
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?"Hello, world!":END Rh%@N.Z*
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现代版BASIC(例如Quick BASIC): @|{8/sOq
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Print "Hello, world!" 7rG+)kHG
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以下的语句在Quick BASIC中同样有效: ]|u7P{Z"R
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? "Hello,world!" 53>(2 _/[r
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BCPL !x!1H5"
GET "LIBHDR" OIkjO}/7
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LET START () BE 3p]\l ]=
$( *S?'[PS]1
WRITES ("Hello, world!*N") u8gqWsvruM
$) O:ACp<@
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Befunge !?lvmq
"!dlrow olleH">v J:OP*/@='
, ;@
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^_@ >!%+9@a}
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Brainfuck pfw`<*e'
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Z<QNzJ D
+++++++++++++++.>.+++.------.--------.>+.>. wPq9`9 #
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C *9|p}q9n
#include <stdio.h> 9_8\xLk
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int main(void) ZXXJ!9-&+J
{ g yegdky3
printf("Hello, world!\n"); Y!+H9R
return 0; <[w5M?n8
} hj{)6dBX%
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C++ KT+{-"4-
#include <iostream> y:_>R=sw
d c/^
int main() [XubzZ9
{ #XG3{MGX[
std::cout << "Hello, world!" << std::endl; *rB@[(/
return 0; A~X\ dcn
} =yoR>llbBC
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C++/CLI <H{K&,Z(ZM
int main() :*^aSPlV
{ *.KVrS<B1
System::Console::WriteLine("Hello, world!"); 9E Y`j,{4
} rz&'wCiOO
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C# (C Sharp) :X:s'I4J
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class HelloWorldApp Bsha)<
{ j\zlp
public static void Main() r^H,H'BohJ
{ s0:M'wA
System.Console.WriteLine("Hello, world!"); Zz+v3o0
} U| ?68B3
} ?\(qA+iP0
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COBOL FBvh7D.hV
IDENTIFICATION DIVISION. *$`N5;7'`
PROGRAM-ID. HELLO-WORLD. ZJm$7T)V
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ENVIRONMENT DIVISION. wLb:FB2
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DATA DIVISION. Dr[;\/|#
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PROCEDURE DIVISION. 5#s],h
DISPLAY "Hello, world!". ^q#[oO
STOP RUN. ]mz '(t
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Common Lisp 7U?#Xi5
(format t "Hello world!~%") .p> ".q
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gs=ok8w
DOS批处理 )WW*X6[k
@echo off Lusd kc7
echo "Hello, world!" Q1ayd$W@<
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lpS v
Eiffel 6VuyKt
class HELLO_WORLD v*FbvrY
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creation OU}eTc(FeC
make ;#S]mso1
feature /xcXd+k]
make is t;/uRN*.
local <m\<yZ2aa
io:BASIC_IO mBb3Ta
do nRu %0Op
!!io ~WORC\kCW
io.put_string("%N Hello, world!") {MyI3mvA
end -- make 5k9
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end -- class HELLO_WORLD t&F:C
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Erlang s6Dkh}:d
-module(hello). (5,x5l]-N
-export([hello_world/0]). /U0Hk>$~(
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hello_world() -> io:fwrite("Hello, World!\n"). ryw%0H18
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Forth "Da-e\yA
." Hello, world!" CR qY'+@^<U;
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Fortran <
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WRITE(*,10) ]z8/S!?
10 FORMAT('Hello, World!') Yw]$/oP`
STOP 8y
END nw, .I [
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HTML :T?WN+3
<HTML> C22h*QM*
<HEAD> r<Z .J/a
<TITLE> Hello World! </TITLE> CTKw2`5u
</HEAD> 'q_ Z
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<BODY> kX`m(
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<p>Hello World!</p> N*6~$zl&
</BODY> Z 4i5,f
</HTML> 5Phsh
= Ul"{T<
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INTERCAL *?~"Jw
PLEASE DO ,1 <- #13 n7G`b'
DO ,1 SUB #1 <- #238 uDkX{<_Xe
DO ,1 SUB #2 <- #112 =+Odu
DO ,1 SUB #3 <- #112 oNw=O>v
DO ,1 SUB #4 <- #0 S)wP];]`K
DO ,1 SUB #5 <- #64 A+foc5B
DO ,1 SUB #6 <- #238 9-q> W
DO ,1 SUB #7 <- #26 d$x vEm
DO ,1 SUB #8 <- #248 (V&d:tW
DO ,1 SUB #9 <- #168 9}a$0H
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DO ,1 SUB #10 <- #24 vnVT0)Lel
DO ,1 SUB #11 <- #16 MzgP@tB
DO ,1 SUB #12 <- #158 [7~AWZU3
DO ,1 SUB #13 <- #52 %72(gR2Wa2
PLEASE READ OUT ,1 ZzTkEz >
PLEASE GIVE UP tP*GYWI48
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Java ~Ey+
public class Hello Wa.xm_4s2
{ >B~?
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public static void main(String[] args) 53ZbtEwhwr
{ [>pBz3fn,
System.out.println("Hello, world!"); @_$$'XA7
} lF.kAEC
} V!Sm,S(
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