“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。 T.J`S(oI
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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》。 xQX<w\s
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以下是用不同语言写成的Hello World程序的几个例子: lfXH7jL2~
Ada yLjV[qP
with Ada.Text_Io; use Ada.Text_Io; +g)_4fV0|
procedure Hello is A S`2=w
begin %A8Pkr<&E
Put_Line ("Hello, world!"); -QN1oK@\mE
end Hello; BXNI(7xi
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汇编语言 1]_?$)$T
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x86 CPU,DOS,TASM <V7SSm
MODEL SMALL j.<:00<
IDEAL MRjH40"2
STACK 100H +{5JDyh0
1XqIPiXJ
DATASEG A<mj8qz
HW DB 'Hello, world!$' o`b$^hv{A
Hde]DK,d
CODESEG bK!,Pc<
MOV AX, @data W\&WS"=~
MOV DS, AX }Q!h ov
MOV DX, OFFSET HW tCuN?_UG
MOV AH, 09H TNyK@~#m
INT 21H UaH26fWs
MOV AX, 4C00H |sA4:Aq
INT 21H UCe,2v%
END c"sj)-_
P#w}3^
r hiS
x86 CPU,GNU/Linux,NASM m$7x#8gF
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +fC#2%VnU
;Enter this into "hello.asm" then type: /_$~rW
;"nasm -f elf hello.asm" 8.*\+nH
;"ld hello.o -o hello" "|(rVj=
;"./hello" aUKh})B
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section .data ;data section declaration /!^L69um
msg db 'Hello World!',0AH o9_(DJ<{
len equ $-msg ;string length _Wm(/ +G_|
ls [Ls
section .text ;code section declaration yB0jL:|a
global _start ;entry point (start of execution) 's$A+8;L
_start: mov edx,len ;string length NE$VeW+@
mov ecx,msg ;string start #=`FM:WH
mov ebx,1 ;file handle: stdout '9IP;
mov eax,4 ;sys_write zY]Bu-S3
int 80h ;kernel system call CWE Ejl
6W)xj6<@
mov ebx,0 ;return value *eHA:
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mov eax,1 ;sys_exit J
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int 80h ;kernel system call U(rr vNt:t
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-@YVe:$%b
x86 CPU,Windows,MASM32 V<7R_}^_7
.386 zj~8>QnKk
.model flat,stdcall Zx}NFcn
option casemap:none Gojl0?
;Include 文件定义 JN{<oxI
include windows.inc :hC
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include user32.inc v9Z lNA7m!
includelib user32.lib 1 ;_{US5FR
include kernel32.inc g,00'z_D
includelib kernel32.lib jf$JaY
;数据段 bHhC56[M
.data ,"P5D&,_
szCaption db 'A MessageBox!',0 .'l.7t
szText db 'Hello,world!',0 % MfGVx}nG
;代码段 1bV 2
.code T
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start: @J~lV\
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK k)N2 +/
invoke ExitProcess,NULL <bEN8b
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> n%83jep9
end start E\{^0vNc
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AWK s,eld@
BEGIN { print "Hello, world!" } >/7KL2*
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BASIC }ZEfT]
传统版BASIC(例如GWBASIC): w o-O_uZB
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10 PRINT "Hello, world!" 2x)0?N[$O
20 END ,H.(\p_N
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或在提示符输入: -D!#W%y8
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?"Hello, world!":END Ck ~V5
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现代版BASIC(例如Quick BASIC): Y0/jH2 n
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Print "Hello, world!" =$"zqa.B6
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以下的语句在Quick BASIC中同样有效: `A4QU,0
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? "Hello,world!" y)?W-5zL
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BCPL ,^MW)Gf<
GET "LIBHDR" 7,V!Iv^X
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LET START () BE 7&;[an^w
$( <Dt/Rad
WRITES ("Hello, world!*N") 1R5\GKF6o
$) ]C}u-B746
HI"!n$p
2x<Qt2"
Befunge BiHiVhD_
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, 6e$sA (a=i
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^D W#
Brainfuck /(hP7_]`2
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< bqg]DO$*
+++++++++++++++.>.+++.------.--------.>+.>. Q|j@#@O 1
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C }}sRTW
#include <stdio.h> !7IT~pO`
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int main(void) U:mq7Rd8
{ PBxK>a
printf("Hello, world!\n"); Q.pEUDq/
return 0; b*'=W"%\
} !LHzY(
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C++ fG8}= xH_&
#include <iostream> #.\,y>`
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int main() c-s`>m
{ 4! Oa4
std::cout << "Hello, world!" << std::endl; 1c<CEq:?e%
return 0; 66^1&D"
} in=k:j,U0
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C++/CLI CfkNy[}=
int main() eB<V%,%N#
{ !OuTXa,IH
System::Console::WriteLine("Hello, world!"); s%L"
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} RAg|V:/M
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C# (C Sharp) K\^&_#MG
class HelloWorldApp /c_kj2& ]9
{ XvA0nEi
public static void Main() &{%S0\K Y
{ DK@w^ZW6JA
System.Console.WriteLine("Hello, world!"); e~t}z_>F
} :"<B@Z
} 6PzN>+t^y
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COBOL Zv1Bju*y
IDENTIFICATION DIVISION. 7'{Yz
PROGRAM-ID. HELLO-WORLD. r'9=kx
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ENVIRONMENT DIVISION. =XacG}_
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DATA DIVISION. a!0?L0_W&
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PROCEDURE DIVISION. siss_1J
DISPLAY "Hello, world!". I7q?V1fu4
STOP RUN. k[r./xEv+t
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Common Lisp RK~FT/
(format t "Hello world!~%") shDt&_n
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JR a*;_
DOS批处理 (}~eD
@echo off wCq)w=,
echo "Hello, world!" w371.84
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Eiffel ?(,5eg
class HELLO_WORLD e&H<lT
(1elF)
creation XftJ= *
make i"sYf9,
feature W3o}.|]
make is S,"ChR
local OO !S
w
io:BASIC_IO S\v&{
do n6%jhv9H
!!io ;8;~C"
io.put_string("%N Hello, world!")
];b!*Z
end -- make :i,c<k
end -- class HELLO_WORLD ,8J*S
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Erlang [#Nx>RY
-module(hello). n7, 6a
-export([hello_world/0]). ?CUp&L0-"
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hello_world() -> io:fwrite("Hello, World!\n"). P2
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Y%CL@G60
Forth e@2Vn? 5
." Hello, world!" CR J%Z)#
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#o"HD6e
Fortran TJw.e/
WRITE(*,10) Pu%>j'A
10 FORMAT('Hello, World!') L1Cn
STOP +{Jf]"KD
END Q5Ghki
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HTML !iitx U
<HTML> bF Y)o Z
<HEAD> kkE)zF
<TITLE> Hello World! </TITLE> $NGtxZp
</HEAD> <0Egkz3s
<BODY> aji~brq
<p>Hello World!</p> :7DVc&0
</BODY> ^0ZKHR(}e
</HTML> j=jrzG+`
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INTERCAL fkv{\zN
PLEASE DO ,1 <- #13 &v9PT!R~
DO ,1 SUB #1 <- #238 dT@SO
DO ,1 SUB #2 <- #112 q/2K=BOh
DO ,1 SUB #3 <- #112 sO4}kxZ
DO ,1 SUB #4 <- #0 ! ?U^+)^$
DO ,1 SUB #5 <- #64 Mevyj;1t
DO ,1 SUB #6 <- #238 k89gJ5B$
DO ,1 SUB #7 <- #26 (+Kof
DO ,1 SUB #8 <- #248 C"` 'Re5)
DO ,1 SUB #9 <- #168 NK#"qK""k
DO ,1 SUB #10 <- #24 K<7T}XzU$
DO ,1 SUB #11 <- #16 8.Own=G?
DO ,1 SUB #12 <- #158 .Qi1I
DO ,1 SUB #13 <- #52 zc,9Qfn
PLEASE READ OUT ,1 iQ}sp64
PLEASE GIVE UP *6x^w%=A
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SSsQu^A
Java :Ye#NPOI
public class Hello d>"$^${
{ X @jYQ.
public static void main(String[] args) f_P+qm
{ Oi%~8J>
System.out.println("Hello, world!"); g d}TTe
} |8U7C\S[
} teS0F
h, 6S$,UI
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JSP y[@j0xlO
<% ZR q}g:
out.print("Hello, world!"); ~S=fMv^BR
%> [@)z $W
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wZ3vF)2s
MIXAL & Dl'*|
TERM EQU 19 the MIX console device number JX@6Sg<
ORIG 1000 start address ^s2-jkK
START OUT MSG(TERM) output data at address MSG FZ.z'3I
HLT halt execution Ty4%du6?d
MSG ALF "MIXAL" 09;'z
ALF " HELL" tG^ ?fc
ALF "O WOR" ]-Y]Q%A4
ALF "LD " FQ~ead36C
END START end of the program iN/!k.ybW}
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Nuva Qbt>}?-
<..直接输出..> ~Ow23N
Hello, world! GH+FZ (F
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<..或者..> )%@WoBRj
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<. kR~4O$riG
// 不带换行 mF:s-+
? "Hello, world!" DHNii_w4v
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// 或者 d!z).G
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// 带换行 ihY^~
?? 'Hello, world!' R qjDMN:
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T&MS_E&;
OCaml W]Tt8
let main () = {,C8}8a W
print_endline "Hello world!";; %ih7Jt
#`)-$vUv^f
!#gE'(J;c
Pascal -%gd')@SfD
program Hello; s!fY^3
begin S9#N%{8P
writeln('Hello, world!'); [W;dguh
end. QOy&!6
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Perl QpTNU.v5f
#!/usr/local/bin/perl DMZ aMY|
print "Hello, world!\n"; (?3\.tQ}}
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PHP aKzD63
<?php *k]S{]Y
print("Hello, world!"); a`X&;jH0ef
?> =X5&au o
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du
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Pike BW-P%:B1!R
#!/usr/local/bin/pike D!T4k]^
int main() $M<