“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。 iD;pXE{2s%
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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》。 =r w60B
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以下是用不同语言写成的Hello World程序的几个例子: |E%i
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Ada ~0;l\^
with Ada.Text_Io; use Ada.Text_Io; Yf=an`"
procedure Hello is 4trP*u,4
begin Ry$zF~[
Put_Line ("Hello, world!"); {}sF?wZf
end Hello; kIC$ai6.
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汇编语言 nC:>1kt
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x86 CPU,DOS,TASM S]}hh,A
MODEL SMALL w^AY= Fc
IDEAL X.q,
STACK 100H TFfV?rBI
cO8':P5Q
DATASEG :.k1="H~@
HW DB 'Hello, world!$' {V8yJ{.G
$;4y2?E
CODESEG 9<e%('@[
MOV AX, @data &:>3tFQSH
MOV DS, AX \?$`dA [
MOV DX, OFFSET HW ;\N)RZ
MOV AH, 09H R m&^[mv
INT 21H Z[ NO`!<
MOV AX, 4C00H l i @:
INT 21H Qu
x1N
END m1 tYDZ"i
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x86 CPU,GNU/Linux,NASM p\'0m0*
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 6UAn#d9
;Enter this into "hello.asm" then type: ;+Dq3NE
;"nasm -f elf hello.asm" As}eI!
;"ld hello.o -o hello" ?Iin/ <y
;"./hello" 9wTN*y
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section .data ;data section declaration {h}0"5
msg db 'Hello World!',0AH z[cs/x
len equ $-msg ;string length c\Z.V*o
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section .text ;code section declaration ?M/H{
global _start ;entry point (start of execution) |Ix{JP"Lk
_start: mov edx,len ;string length 3P.v#TEst
mov ecx,msg ;string start bwC~
mov ebx,1 ;file handle: stdout
&H4Y`xV^=
mov eax,4 ;sys_write 3)6TnY/u6{
int 80h ;kernel system call &'V1p4'
j`D%Wx_
mov ebx,0 ;return value nrF5^eZ#
mov eax,1 ;sys_exit kS7`g A
int 80h ;kernel system call QX`T-)T e
wv7XhY}
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x86 CPU,Windows,MASM32 Ah?,9r=U
.386 S"@/F-
81
.model flat,stdcall )bgaqca_{
option casemap:none :Rroz]*
;Include 文件定义 l%_r 3W
include windows.inc N|rB~
include user32.inc baO'FyCs9&
includelib user32.lib 9cnLf#
include kernel32.inc R<L<kChg
includelib kernel32.lib x 8/I"!gI
;数据段 LmZ"_
.data 7'g{:dzS*3
szCaption db 'A MessageBox!',0 = pCO1<wR
szText db 'Hello,world!',0 Wik8V 0(
;代码段 <2V:tj)?P
.code MQY}}a-oug
start: xXRlQ|84
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ng{"W|
invoke ExitProcess,NULL u)4eu,MBT
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \-W|)H
end start vTl7x
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m<e_Z~ ^G
AWK ~PtIq.BY
BEGIN { print "Hello, world!" } ?'IY0^
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BASIC k
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传统版BASIC(例如GWBASIC): fZtuP1-4
#]kO/Mr
10 PRINT "Hello, world!" R_zQiSwG<
20 END h]jy):9L
q2e=(]rKE{
或在提示符输入: ZnAXb S
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?"Hello, world!":END KCl85Wi'
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现代版BASIC(例如Quick BASIC): NVX @1}
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Print "Hello, world!" >X_5o^s2s
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以下的语句在Quick BASIC中同样有效: \|YIuzlO4
u Wxl\+_i
? "Hello,world!" =v{Vl5&>?
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O%)Wo?)HM
BCPL '/'dg5bfV
GET "LIBHDR" m>9j dsqB
od-yVE&
LET START () BE 2r"J"C
$( l2ARM3"
WRITES ("Hello, world!*N") +pY--5t
$) tyU'[LF?
<<Q}|$Wu
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Befunge ZZ324UuATX
"!dlrow olleH">v {fI"p;|
, H(gETRh
^_@ ae>B0#=
`LOW)|6r`
sXwa`_{
Brainfuck F#)@ c
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< E<[Y KY
+++++++++++++++.>.+++.------.--------.>+.>. fZavZ\qU
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C Q#5~"C
#include <stdio.h> ;J,`v5z0:
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int main(void) awl3|k/
{ }0}=-g&
printf("Hello, world!\n"); LaX<2]Tx:
return 0; m0p%R>:5
} Fv-~v&
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C++ ugzrG0=lx
#include <iostream> uqv S
ctMH5"F&1
int main() WXQ+`OH7
{ %+iAL<S
std::cout << "Hello, world!" << std::endl; {u[_^
return 0; <!q_C5>XJ
} u K=)65]
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lx<!*2
-^
C++/CLI \DcO.`L
int main() J,*+Ak
~
{ X@ S~D7|ja
System::Console::WriteLine("Hello, world!"); q.bxnta"
} $kBcnk
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C# (C Sharp) .Vrl:
class HelloWorldApp vP%}XEF
{ <-DQ(0xg
public static void Main()
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{ @~bP| a
System.Console.WriteLine("Hello, world!"); LT#EYnG
} }=d}q *
} cHC4Y&&uZ
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COBOL p$}/~5b}4
IDENTIFICATION DIVISION. zvn3i5z
PROGRAM-ID. HELLO-WORLD. l:~/%=
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ENVIRONMENT DIVISION. "hnvND4=
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DATA DIVISION. 8?1MnjhX10
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PROCEDURE DIVISION. {_4`0J`3
DISPLAY "Hello, world!". q1Ad"rm
STOP RUN. 2(f-0or(
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*).!
Common Lisp yN/g;bQ
(format t "Hello world!~%") ]wwN mmE
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DOS批处理 0),fY(D2T
@echo off DWS#q|j`"
echo "Hello, world!" &88c@Ksn
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C]&/k_k
Eiffel ?)H:.]7-x
class HELLO_WORLD -<:w{cV
85USMPF
creation KQ^|prN?y
make .hJcK/m
feature ]&s@5<S[
make is *M.,Yoj
local bg5i+a,?
io:BASIC_IO WmkCV+thA
do J:@yG1VIp
!!io -O\fy!
io.put_string("%N Hello, world!") b&6lu4D
end -- make ^kke
end -- class HELLO_WORLD xDNXI01o
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Erlang ,/&|:PkS
-module(hello). _WZ{ i,
-export([hello_world/0]). sR^b_/ElxT
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hello_world() -> io:fwrite("Hello, World!\n").
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4X!4S6JfB
Forth gvr&7=p
." Hello, world!" CR !>f:wk2
~14|y|\/
<"8F=3:uk
Fortran B|.A6:1g+
WRITE(*,10) 1je/l9L
10 FORMAT('Hello, World!') qHvU4v
STOP i-?mghe8
END Et
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Ezev
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G#ELQ/Q
HTML _St":9'uU
<HTML> HL-'\wtl
<HEAD> NLu[<u U*
<TITLE> Hello World! </TITLE> G'`^U}9V\
</HEAD> "gFw:t"VV
<BODY> wYLodMaYH
<p>Hello World!</p> l[u17,]S
</BODY> {yB0JL}n
</HTML> ]L2b|a3
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#=)!\
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INTERCAL V5p^]To!
PLEASE DO ,1 <- #13 W>qu~ak?x
DO ,1 SUB #1 <- #238 $@l=FV_;
DO ,1 SUB #2 <- #112 yo8mfH_,
DO ,1 SUB #3 <- #112 s>W :vV@
DO ,1 SUB #4 <- #0 \4>w17qng
DO ,1 SUB #5 <- #64 eSHsE3}h
DO ,1 SUB #6 <- #238 <Mu T7x-
DO ,1 SUB #7 <- #26 xel|,|*Yq
DO ,1 SUB #8 <- #248 5V~vND*
s
DO ,1 SUB #9 <- #168 x$t2Y<_
DO ,1 SUB #10 <- #24 *3]2vq
DO ,1 SUB #11 <- #16 _BONN6=*y
DO ,1 SUB #12 <- #158 e*}:tH
DO ,1 SUB #13 <- #52 ysPm4am$
PLEASE READ OUT ,1 {{B'65Wu
PLEASE GIVE UP zhbSiw
6=qC/1,l
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Java 2.N)N%@
public class Hello YWJ$Pp
{ q<Qjc
public static void main(String[] args) 0FLCN!i1
{ "?kDR1=7A
System.out.println("Hello, world!"); 22;B:
} +o'xyR'(
} fwmXIpteK
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cucmn*o?
JSP V7`vLs-
<% L8H:,} 2
out.print("Hello, world!"); 1wH6 hN,
%> 2h#.:!/SMw
T1R~^x1
IuA4eDr^Y%
MIXAL OnhR`
TERM EQU 19 the MIX console device number mU
ORIG 1000 start address 3ZI:EZ5
START OUT MSG(TERM) output data at address MSG cNN0-<#c
HLT halt execution WnOvU<Z
<
MSG ALF "MIXAL" 'Z:wEt!
ALF " HELL" 8B]\;m
ALF "O WOR" J"@X>n
ALF "LD " sCP|d`'
END START end of the program f$9|qfW'$
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<..直接输出..> M,X)rM}Q
Hello, world! }_F:]lI*R
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<..或者..> &