“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。 Zd'Yu{<_2N
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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》。 tLU@&NY`
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以下是用不同语言写成的Hello World程序的几个例子: U)M&AYb
Ada *fs[]q'Q
with Ada.Text_Io; use Ada.Text_Io; ^s#+`Y05/
procedure Hello is BNF*1JO
begin 6oq5CD oq
Put_Line ("Hello, world!"); |
TG 6-e_
end Hello; F!phTu
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-\USDi(
汇编语言 "UreV
Ke:WlDf
x86 CPU,DOS,TASM Bd 0oA
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MODEL SMALL kBLFK3i
IDEAL 0y t36Du
STACK 100H omGzyuPF
XdmpfUR,13
DATASEG P*B@it
HW DB 'Hello, world!$' a~J!G:(
5}Id[%.x
CODESEG 8#HnV%|N
MOV AX, @data jo0XF]
MOV DS, AX ~]#-S20
MOV DX, OFFSET HW <Y6zJ#BD
MOV AH, 09H `K:n=hpF
INT 21H ]R>NmjAI
MOV AX, 4C00H _BY+Tfol
INT 21H
4JU 2x
END z]SEPYq:
:?j=MV
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x86 CPU,GNU/Linux,NASM @/?i|!6
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). zy%0;%
;Enter this into "hello.asm" then type: Tr s2M+r)
;"nasm -f elf hello.asm" '&hd^9]Lo
;"ld hello.o -o hello" d"IZt;s/,
;"./hello" Phk3Jv
10h;N[
section .data ;data section declaration 8V}|(b#
msg db 'Hello World!',0AH \NMqlxp2
len equ $-msg ;string length C7G,M
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section .text ;code section declaration ';Q8x?BS
global _start ;entry point (start of execution) !h4A7KBYG
_start: mov edx,len ;string length m?4hEwQxf
mov ecx,msg ;string start NP\mzlI~@
mov ebx,1 ;file handle: stdout 5jso)`IL
mov eax,4 ;sys_write Qu,R6G
int 80h ;kernel system call \b%c_e
|pv$],&&:
mov ebx,0 ;return value DQ3L=
mov eax,1 ;sys_exit PVH Or^
int 80h ;kernel system call ,`RX~ H=C
tc[z/
9od*N$
x86 CPU,Windows,MASM32 c_S~{a44Ud
.386 S5u$I
.model flat,stdcall cfilH"EK
option casemap:none 9Bw#VQ
;Include 文件定义 (CRx'R
include windows.inc Bm,Vu 1]t
include user32.inc 4_iA<}>|
includelib user32.lib 1<1+nGO
include kernel32.inc AX$r,KmE
includelib kernel32.lib LEeA ,Y
;数据段 i!}6FBZ
.data Axns
szCaption db 'A MessageBox!',0 2"?D aX
szText db 'Hello,world!',0 |hw.nY]J
;代码段 J'sa{/
#
.code uV_%&P
start: PuREqa\_[
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK FG[rH]
invoke ExitProcess,NULL \eNB L[
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> M;Pry3J
end start >W8"Ar
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AWK CEI"p2
BEGIN { print "Hello, world!" } $A9Pi"/*z
=k.%#h{
[|1I.AZ{
BASIC aQ$sn<-l
传统版BASIC(例如GWBASIC): 2aCf?l(
&.?E[db"h
10 PRINT "Hello, world!" s5{=lP
20 END l*z%Jw
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或在提示符输入: ~WTk X(\
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?"Hello, world!":END _qf39fM;\
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现代版BASIC(例如Quick BASIC): &nXE?-J
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Print "Hello, world!" 3m!tb)
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以下的语句在Quick BASIC中同样有效: iLZY6?_^
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? "Hello,world!" ?R#$
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BCPL z,ERq,g+L
GET "LIBHDR" YmaS,Q-
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LET START () BE ;10YG6:
$( m!Z<\2OP
WRITES ("Hello, world!*N") ,G%UU~/a
$) =xIZJ8e
jhf3(hx&F
p>+9pxx~U
Befunge o zn&>k
"!dlrow olleH">v -grf7w^
, 1J"9Y81
^_@ g assOd
b{
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SDil\x
Brainfuck ebI2gEu;a
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 8!Wh`n<
+++++++++++++++.>.+++.------.--------.>+.>. ').)0;
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C 30uPDDvar
#include <stdio.h> 3._
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6 Ln~b <I
int main(void) T9Q3I
{ \\<=J[R.M
printf("Hello, world!\n"); &Q~W{.
return 0; iOURS
} w'(/dr
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C++
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#include <iostream> f;
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int main() I*
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{ rMx Iujx
std::cout << "Hello, world!" << std::endl; nPXP9wmh4x
return 0; A,DBq9Z+4R
} 1B2#uhT]r
v>} +->f
H/*ol^X7
C++/CLI hOAZvrfQ4
int main() ALTOi?
{ +_i{4Iz~p
System::Console::WriteLine("Hello, world!"); +n;nvf}(
} dn-
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C# (C Sharp) Om0$6O
class HelloWorldApp E@ U]k$M
{ bJ!\eI%ld
public static void Main() JyMk @Y
{ EYq?NL='
System.Console.WriteLine("Hello, world!"); [UzD3VPg
} ~#*C,4m
} 8O,\8:I#
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):! =XhQ
COBOL R}Lk$#S#
IDENTIFICATION DIVISION. Dd5
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PROGRAM-ID. HELLO-WORLD. 4$&l`yWU+
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ENVIRONMENT DIVISION. nL:&G'd
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DATA DIVISION. wI_@
QE(.w
dHP
PROCEDURE DIVISION. ?8V.iHJk
DISPLAY "Hello, world!". eTx9fxw
STOP RUN. }R['Zoh4I
[v"Z2F<.=
\tI%[g1M
Common Lisp ~U]g;u
(format t "Hello world!~%") yv[j
Pbe
}UW7py!TN
yQ[;y~W
DOS批处理 I$xZV?d.
@echo off njy2pDC@
echo "Hello, world!" :jl*Y-mM
C:J;'[,S
XA2Ld
Eiffel NZq-%bE
class HELLO_WORLD CjQO5
[b3!H{b#
creation \#9LwC"8;
make MuY:(zC%
feature >q:%?mi
make is crM5&L9zF
local @N>7+
4
io:BASIC_IO %hnBpz
do r<+C,h;aww
!!io a+^`+p/5
io.put_string("%N Hello, world!") AatSN@,~z
end -- make ,5n!a.T
end -- class HELLO_WORLD }GB~3
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S 5S\zTPIf
Erlang 6ZQ |L=Ytp
-module(hello). v03cQw\"WE
-export([hello_world/0]). 6$k#B ~~
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hello_world() -> io:fwrite("Hello, World!\n"). p'/\eBhG]=
\cIN]=#
gpV4qDXV
Forth lYx_8x2
." Hello, world!" CR Uk?G1]$mL
RPz[3y
]nTeTW
Fortran <,]:jgX
WRITE(*,10) JtL>mH
10 FORMAT('Hello, World!') Pp8S\%z~h
STOP Js,! G
END p27Dcwov
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Xsq@E#@S
HTML F(G..XJQ
<HTML> 0WUBj:@g
<HEAD> p/h\QG1
<TITLE> Hello World! </TITLE> Y
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</HEAD> *4cuWkQ,
<BODY> ^{+ry<rS>
<p>Hello World!</p> d9f7 &
</BODY> +K4XMf
</HTML> ]at$ohS
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HQ9+ O*xx63%jR
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Y=mr=]q
%~LY'cfPse
INTERCAL zKQ<Zr
PLEASE DO ,1 <- #13 HGQ</5Z
DO ,1 SUB #1 <- #238 fzSkl`K}
DO ,1 SUB #2 <- #112 uC'-: t#
DO ,1 SUB #3 <- #112 Ln&pe(c
DO ,1 SUB #4 <- #0 D#g-mqar:
DO ,1 SUB #5 <- #64 E'QAsU8pP
DO ,1 SUB #6 <- #238 ;vH2r~
DO ,1 SUB #7 <- #26 0]DOiA
DO ,1 SUB #8 <- #248 8?yIixhw
DO ,1 SUB #9 <- #168 kuEXNi1l
DO ,1 SUB #10 <- #24 `a83RX_\
DO ,1 SUB #11 <- #16 E2e"A
I.h
DO ,1 SUB #12 <- #158 4>gfLK\R:
DO ,1 SUB #13 <- #52 37U8<
PLEASE READ OUT ,1 ]>n{~4a
PLEASE GIVE UP (t4i&7-
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Java O<m46mwM
public class Hello @kYY1m v;
{ _jQ:9,;
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public static void main(String[] args) 8em'7hR9
{ L AQ@y-K3
System.out.println("Hello, world!"); 7+jxf[(XQ
} q)q3p
} d<m;Q}/l&h
CNB
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I,?NYIG"(
JSP %_!/4^smE
<% c2E /-n4K@
out.print("Hello, world!"); A2'i~_e
%> -KiPqE%&G
i fsh(^N
LRJX>+@
MIXAL yzS]FwW7
TERM EQU 19 the MIX console device number *6s_7{;
ORIG 1000 start address ~;"eNg{T
START OUT MSG(TERM) output data at address MSG (}A$4?
HLT halt execution LO`0^r
MSG ALF "MIXAL" =E-x0sr?
ALF " HELL" XcJ5KTn
ALF "O WOR" /`PYk]mJh
ALF "LD " {wSi?;[Gq
END START end of the program 7e<=(\(yl
A4j,]hOD
odP<S.
Nuva o@Ye_aM~?Y
<..直接输出..> TegdB|y7O
Hello, world! Jf^3nBZ
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<..或者..> Pf;OYWST
nW=6nCyvo
<. xdSMYH{2A
// 不带换行 z
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? "Hello, world!" UylIxd
!yNU-/K
// 或者 (hc!!:N~q
1mFH7A($
// 带换行 '(]Wtx%9"
?? 'Hello, world!' ,N$Q']Td
.> NEBhVh
EjPR+m
][
$UN
OCaml Y>$5j}K
let main () = e~vO
print_endline "Hello world!";; +)c<s3OCE
q;K]NP-_p
@&*TGU
Pascal R@\fqNq
program Hello; _S_,rTf&
begin gwaSgV$z
writeln('Hello, world!'); 4MC]s~n
end. 6~dAK3v5
xW"O|x$6
S^s-md>
Perl XDK Me}
#!/usr/local/bin/perl _`2%)#^o
print "Hello, world!\n"; :!i=g+e]
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g~<[;6&