“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。 6wfCC, 2
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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》。 *cJ GrLC
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以下是用不同语言写成的Hello World程序的几个例子: ,M5J~Ga
Ada T+RfMEdr
with Ada.Text_Io; use Ada.Text_Io; KZJ;O7'`
procedure Hello is aw {?UvL&
begin ;E(%s=i
Put_Line ("Hello, world!"); <SbW
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end Hello; $D\SueZ
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pzH N:9r
汇编语言 U!TFFkX[
ma vc$!y
x86 CPU,DOS,TASM 4Rp2
MODEL SMALL h@t&n@8O?
IDEAL }n oI2.-#
STACK 100H UC3?XoT\
x-mRPH
DATASEG u-yQP@^H
HW DB 'Hello, world!$' %jim] ]<S[
Fz~-m# Ts
CODESEG -#|J
MOV AX, @data _6(QbY'JV`
MOV DS, AX *EvnN:
MOV DX, OFFSET HW rx
CSs
MOV AH, 09H ) j_g*<
INT 21H 9#xcp/O
MOV AX, 4C00H H~e;S#3_v
INT 21H 2D,9$ 0k_]
END FhHcS>]:.
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invoke ExitProcess,NULL i/N4uq}'A<
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [4KW64%l
end start 0wU8PZ Nj
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{ K'QE0'x
AWK xL,Lb}){%
BEGIN { print "Hello, world!" } ^R',P(@oL
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BASIC 484lB}H
传统版BASIC(例如GWBASIC): mojD
>DeG//rv
10 PRINT "Hello, world!" P$?3\`U;
20 END @AYO )Y8
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或在提示符输入: c%%r
fm C)]O%q
?"Hello, world!":END ~GZ!;An
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现代版BASIC(例如Quick BASIC): P#H|at
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Print "Hello, world!" q] eSDRW
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以下的语句在Quick BASIC中同样有效: Ch8w_Jf1yx
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? "Hello,world!" o-"/1 zLg4
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BCPL '~Uo+<v$w
GET "LIBHDR" 3)ac
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LET START () BE !mLQdkTE
$( `oQ)qa_
WRITES ("Hello, world!*N") V~ph1Boz2
$) gU1E6V-Jm
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Befunge R?@F%J;tx
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, h$7rEs
^_@ oxT..=-
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Brainfuck 0?59o!@h
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< A??(}F L
+++++++++++++++.>.+++.------.--------.>+.>. [!9dA.tF
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C HPJ\]HV(
#include <stdio.h> )vVt{g
DtkY;Yl
int main(void) .1R:YNx{/
{ %HOMX{~}#
printf("Hello, world!\n"); k{_ Op/k}V
return 0; ue8C pn^M
} z*?-*6W
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C++ $t.i)wg +
#include <iostream> ^3B)i=
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int main() H{Tt>k
{ |Y#KMi ~
std::cout << "Hello, world!" << std::endl; :.KN;+tP
return 0; MJJ]8:%
} GQ<]Sd}[
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C++/CLI :C6
int main() 6b1f? 0
{ BZAeg">3
System::Console::WriteLine("Hello, world!"); 6f1%5&si
} Fl{:aq"3
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C# (C Sharp) ~<b/%l>h1
class HelloWorldApp O 1TJJ8
{ f+>l-6M+p
public static void Main() -1dbJ/)
{ 0 5eth
System.Console.WriteLine("Hello, world!"); Q(@/,%EF
} UUb n7&
} [KrWL;[1<
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COBOL O:02LHE
IDENTIFICATION DIVISION. u6&<Bv
PROGRAM-ID. HELLO-WORLD. H:9Z.|{Gv
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ENVIRONMENT DIVISION. yKE[,"
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DATA DIVISION. CNwYQe-i
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PROCEDURE DIVISION. 5Z2E))UU
DISPLAY "Hello, world!". c2M-/ x-:
STOP RUN. aq-`Bar
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Common Lisp HSq.0vYl6
(format t "Hello world!~%") [$; \1P/
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DOS批处理 sj;8[Xy's
@echo off 97"dOi!Wh
echo "Hello, world!" =+um:*a.
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Eiffel 3L2@C%
class HELLO_WORLD .Q'/e>0
Wxjv=#3
creation en\shc{R]`
make :00 #l]g0q
feature JTT"t@__
make is C;m 7~R
local mKWfRx*UdG
io:BASIC_IO !3~VoNh,
do bu`8QQ"C
!!io Z4S0{:XY
io.put_string("%N Hello, world!") eIVCg-l}
end -- make X8!=Xjl)
end -- class HELLO_WORLD j.C)KwelBS
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C+{du^c$
Erlang *We.?"X'].
-module(hello). ?O1:-vpZ
-export([hello_world/0]). f"XFf@!
k<b`v&G
hello_world() -> io:fwrite("Hello, World!\n"). u15-|i{y7
oicett=5
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Forth bkmW[w:M
." Hello, world!" CR -VK6Fq
-w41Bvz0
rE?(_LI
Fortran H^jFvAI,8
WRITE(*,10) s3m]rC
10 FORMAT('Hello, World!') V\axOz!
STOP .E!p
END }5n((7@X
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HTML bDdJh}Vz
<HTML> >`rK=?12<
<HEAD> /EY^u i
<TITLE> Hello World! </TITLE> XOl]s?6H$
</HEAD> ; n2|pC^
<BODY> YT;b$>1v
<p>Hello World!</p> Mwdh]I,#
</BODY> .K![<eZ
</HTML> /'|'3J]HP
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}g WSV
INTERCAL
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PLEASE DO ,1 <- #13 ?p{xt$<p
DO ,1 SUB #1 <- #238 \jn[kQ+pJ
DO ,1 SUB #2 <- #112 %gd=d0vm
DO ,1 SUB #3 <- #112 5,:tjn
DO ,1 SUB #4 <- #0 7I;Give{
DO ,1 SUB #5 <- #64 66\0JsT?3
DO ,1 SUB #6 <- #238 ld1t1'I'
DO ,1 SUB #7 <- #26 DQg:W |A
DO ,1 SUB #8 <- #248 7e&R6j
DO ,1 SUB #9 <- #168 Oq{&hH/'}
DO ,1 SUB #10 <- #24 *[*E|by
DO ,1 SUB #11 <- #16 p},6W,f
DO ,1 SUB #12 <- #158 iKB8V<[\T
DO ,1 SUB #13 <- #52 yhr\eiJ@6
PLEASE READ OUT ,1 7 q<UJIf
PLEASE GIVE UP )>LQ{X.
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Java 8$avPD3jx
public class Hello <i'4EnO
{ bAeN>~WvY
public static void main(String[] args) SsjO1F
{ qE6:`f
System.out.println("Hello, world!"); ie$QKoE
} 8?']W\)
} HMNjQ
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JSP [|UW_Bz
<% iV#JJ-OBq
out.print("Hello, world!"); ]s jFj
%>
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=SLP}bP{:
MIXAL p#.B Fy
TERM EQU 19 the MIX console device number XgKtg-,
ORIG 1000 start address 9bjjo;A
START OUT MSG(TERM) output data at address MSG @f0~a
HLT halt execution LBtVK, ?
MSG ALF "MIXAL" daBu<0\
ALF " HELL" Kzxzz6R?
ALF "O WOR" / /qTMxn
ALF "LD " =mCUuY#
END START end of the program j' -akXo<
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Nuva (c(c MC'
<..直接输出..> ?PWD[mQE\
Hello, world! Ze~ a+%Sb
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<..或者..> b@N|sXt&C
K&"Yv~h
<. mLD0Lu_Ob3
// 不带换行 zsI0Q47\
? "Hello, world!" T4T_32`XR
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// 或者 xZFha=#
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// 带换行 v:CYf_
?? 'Hello, world!' '#t"^E2$
.> cl2@p@av
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OCaml 1oo'\
let main () = 3P/T`)V
print_endline "Hello world!";; r4NI(\gU
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Pascal @Th.=
program Hello; IGql^,b
begin ^`YSl*:
writeln('Hello, world!'); r0QjCFSF=
end. FqsG#6|x
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Perl Pf)<