“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。 97}OL`y
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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》。 XCBL}pNkR
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以下是用不同语言写成的Hello World程序的几个例子: iv4H#rJ
Ada d~i+
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with Ada.Text_Io; use Ada.Text_Io; JU)dr4S?
procedure Hello is G|!on<l&
begin hpD!2 K3>
Put_Line ("Hello, world!"); ?!` /m|"
end Hello; njputEGX
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汇编语言 e]zBf;9J
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x86 CPU,DOS,TASM 67Th;h*sh
MODEL SMALL w|K'M?N14
IDEAL 'Wmx)0)
STACK 100H 7_inJ$
"i[@P)
DATASEG DK:o]~n
HW DB 'Hello, world!$' [q8 P~l
-C(crn
CODESEG :%,:"
MOV AX, @data 6[ j.@[t
MOV DS, AX n<z[J=I
MOV DX, OFFSET HW j~[z2tV
MOV AH, 09H %[ Z \S0C
INT 21H CTq&-l:f
MOV AX, 4C00H z`f($t[
INT 21H {#?N
END f'EuY17w
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x86 CPU,GNU/Linux,NASM __G?0*3 G
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). w"-Lc4t+
;Enter this into "hello.asm" then type: *zbNd:i9
;"nasm -f elf hello.asm" KBx6NU?;PO
;"ld hello.o -o hello" uKUiV%p!
;"./hello" EyJJ0
su{poQ}K
section .data ;data section declaration d928~y
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msg db 'Hello World!',0AH k@ RDvn
len equ $-msg ;string length S2sQOM@
SB H(y)
section .text ;code section declaration MyJ%`@+1
global _start ;entry point (start of execution) n|Q@UPb/=
_start: mov edx,len ;string length `{3<{wgw
mov ecx,msg ;string start K*K,}W&}
mov ebx,1 ;file handle: stdout 7)`nD<j5
mov eax,4 ;sys_write gY/"cq
int 80h ;kernel system call SJb&m-
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mov ebx,0 ;return value N
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mov eax,1 ;sys_exit '3/4?wi
int 80h ;kernel system call xpV|\2C
#rMlI3;
f-vCm 5f
x86 CPU,Windows,MASM32 Rr&h!YMb
.386 xHvZV<#
.model flat,stdcall K[Y I4pt7
option casemap:none z+0I#kM"1
;Include 文件定义 /M1ob: m
include windows.inc EN<F# Y3E
include user32.inc _{I3i:f9X8
includelib user32.lib 4VJ-,Z
include kernel32.inc I8hz(2jI
includelib kernel32.lib S 6@u@C
;数据段 4Tb
#fH%
.data lA|
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szCaption db 'A MessageBox!',0 cLpYW7vZ[
szText db 'Hello,world!',0 #xsE3Wj-X
;代码段 6M @[B|Q(
.code V\ZG d+?
start: gX@HO|.t
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK W,V:R
invoke ExitProcess,NULL !"?#6-,Xn
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> j/323Za+
end start Yg]-wQrH
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AWK 2V-
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BEGIN { print "Hello, world!" } .F4>p=r
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BASIC 'nzg6^I7g
传统版BASIC(例如GWBASIC): pA'4|ffwe
^cOUQ33
10 PRINT "Hello, world!" "%`1]Fr
20 END ]R+mKUZ9
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或在提示符输入: ^n*)7K[
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?"Hello, world!":END <T` 7%$/E
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现代版BASIC(例如Quick BASIC): l5S aT,%
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Print "Hello, world!" %f&/E"M
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以下的语句在Quick BASIC中同样有效: (!ux+K
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? "Hello,world!" LA!?H]
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q$0*b]=E
BCPL K^
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GET "LIBHDR" S]}nm
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LET START () BE kYzIp
$( ?h$NAL?
WRITES ("Hello, world!*N") S3q&rqarC%
$) :y'Ah#
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Befunge rJ`!: f
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, 3lf=b~Zi)
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< QVv#fy1"6
+++++++++++++++.>.+++.------.--------.>+.>. |)IlMG
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C /
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#include <stdio.h> 6/f7<
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int main(void) bHY=x}Hv
{
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printf("Hello, world!\n"); [@&m4 7
return 0; 9e<.lb^tP
} piJu+tUy
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C++ C/q'=:H;
#include <iostream> wy<\Tg^J
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int main() j@AIK+0Qc
{ DEBB()6,
std::cout << "Hello, world!" << std::endl; RF`.xQ26=
return 0; 6O7'!@@
} &DS/v)]
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C++/CLI ?U%qPv:
int main() |.(dq^
{ o8 IL$:
System::Console::WriteLine("Hello, world!"); 2Sle#nw3
} M-$%Rzl_
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C# (C Sharp) /Y/UM3/
class HelloWorldApp =%BSKSG.
{ Z|&MKG24
public static void Main() VRVO-Sk
{ `jDTzhO~
System.Console.WriteLine("Hello, world!"); zKyyU}LHH
} ]RwpX ^ 1
} =h-U
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COBOL OstQqV%@
IDENTIFICATION DIVISION. Ka'=o?'B5
PROGRAM-ID. HELLO-WORLD. -m\u
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ENVIRONMENT DIVISION. ~Sdb_EZ
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DATA DIVISION. ! :Y:pu0
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PROCEDURE DIVISION. S:u:z=:r
DISPLAY "Hello, world!". mWv3!i;G<s
STOP RUN. 9G9t" {
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rExnxQ<e
Common Lisp l.(v^3:X
(format t "Hello world!~%") _1!7V3|^
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fIM,lt
DOS批处理 .14~J6
@echo off fPU`/6
echo "Hello, world!" ~Q*%DRd&Z-
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Eiffel
nI[os
class HELLO_WORLD M
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ac
R%Hi+#/dr-
creation #^#PPO
make Y`KqEjsC*
feature ke!?BZx
make is S};#+ufgTt
local ;^+\K-O]c
io:BASIC_IO !'Ak&j1:`
do n#mA/H;wV
!!io ;[(oaK@+n
io.put_string("%N Hello, world!") C:GK,?!Jn'
end -- make t1]K<>g
end -- class HELLO_WORLD G%BjhpL
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b}\N;D.{
Erlang <xup'n^7C
-module(hello).
#+JG(^%B
-export([hello_world/0]). <<UB ^v m
x;w6na
hello_world() -> io:fwrite("Hello, World!\n"). 4"GR]
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.n TwPrG
Forth r`$OO,W
." Hello, world!" CR vjLJinJ/
88Ey12$
=pr`'
Fortran +\x,HsUc"
WRITE(*,10) v/@^Q1G/:
10 FORMAT('Hello, World!') (DJ"WG
STOP $yN{-T"
END w2Us!<x
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HTML p5Z"|\
<HTML> 'SO %)B
<HEAD> `-.%^eIp
<TITLE> Hello World! </TITLE> Ha(c'\T(\
</HEAD> s kvGU(G}
<BODY> Hfv 7LM
<p>Hello World!</p> vNVox0V
</BODY> |rY1US)S
</HTML> z-BXd
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HQ9+ \4&fxe
H .rO]M:UY
7z/|\D_{
C'G/AU
INTERCAL mGtdO/C#B
PLEASE DO ,1 <- #13 >l]Xz*HE
DO ,1 SUB #1 <- #238 \}+_Fo/
DO ,1 SUB #2 <- #112 %!]@J[*1
DO ,1 SUB #3 <- #112 @V(*65b2
DO ,1 SUB #4 <- #0 6rh5h:
DO ,1 SUB #5 <- #64 I+BHstF5um
DO ,1 SUB #6 <- #238 f}aL-N~
DO ,1 SUB #7 <- #26 >d*iD
DO ,1 SUB #8 <- #248 6,o~\8ia
DO ,1 SUB #9 <- #168 I*%-cA%l
DO ,1 SUB #10 <- #24 gGvz(R:y
DO ,1 SUB #11 <- #16 vmi+_]
DO ,1 SUB #12 <- #158 w&X<5'GM
DO ,1 SUB #13 <- #52 xRJ\E }/7
PLEASE READ OUT ,1 +GG9^:<yr
PLEASE GIVE UP *Tas`WA
ht7l- AK
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Java ;QWIsVz
public class Hello TBs|r#
{ @"hb) 8ng
public static void main(String[] args) ]"J~:{, d
{ O#b6mKPt;t
System.out.println("Hello, world!"); f) zn TJL
} dUsYZdQs
} #J@[Wd
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