“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。 +6(\7?
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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》。 ;IR.6k$;
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以下是用不同语言写成的Hello World程序的几个例子: scy_
Ada V=H :`n3k
with Ada.Text_Io; use Ada.Text_Io; Bm+Ca:p%
procedure Hello is +?6@%mW'
begin Bk/&H-NI
Put_Line ("Hello, world!"); Fzy5k?R
end Hello; q!YAA\'31
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汇编语言 }qBmt>#
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x86 CPU,DOS,TASM yVyh\u\
MODEL SMALL pL,l
IDEAL A(+%DZ
STACK 100H aqv'c
j>
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DATASEG a2eE!I
HW DB 'Hello, world!$' @jKB[S;JSn
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CODESEG f%rZ2h)
MOV AX, @data wotw nE
MOV DS, AX #j)"#1IE2W
MOV DX, OFFSET HW BCh|^Pk
MOV AH, 09H |u+!CR
INT 21H T _fM\jdI
MOV AX, 4C00H +.QJZo_
INT 21H YRU95K[
END H'&[kgnQ@
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x86 CPU,GNU/Linux,NASM zxeT{AFPr?
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). -0P9|;h5
;Enter this into "hello.asm" then type: ?HeUU
;"nasm -f elf hello.asm" <,y> W!
;"ld hello.o -o hello"
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;"./hello" XfN(7d0
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section .data ;data section declaration [gj>ey8T
msg db 'Hello World!',0AH Cl!9/l?z
len equ $-msg ;string length mB"1QtD
dj{~!}
section .text ;code section declaration 0!M'z
global _start ;entry point (start of execution) DTHWL
_start: mov edx,len ;string length /|isRh|
mov ecx,msg ;string start \J(kM,ZJ
mov ebx,1 ;file handle: stdout 9T0g%&
mov eax,4 ;sys_write `yO'-(@"gY
int 80h ;kernel system call #@F.wV0
&_74h);2I:
mov ebx,0 ;return value ~yJJ00%
mov eax,1 ;sys_exit %Rk DR
int 80h ;kernel system call :TkMS8
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x86 CPU,Windows,MASM32 BlqISyrY
.386 c7RQ7\
.model flat,stdcall I
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option casemap:none my#\(E+
;Include 文件定义 "<LWz&e^^
include windows.inc Zpz3?VM(
include user32.inc ilAhw4A
includelib user32.lib [pInF
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include kernel32.inc *D.Ajd.G
includelib kernel32.lib `@#rAW D
;数据段 b7B|$T,
.data YLuf2ja}X
szCaption db 'A MessageBox!',0 ',/2J0_
szText db 'Hello,world!',0 Y(R.<LtY
;代码段 $=) Pky-~
.code kT:I.,N
start: nu(7YYCM$
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK O&,8X-Ix
invoke ExitProcess,NULL JfmYr47Pv
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> W2'!Pc,W
end start Fm*npK
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AWK %Aqf=R_^
BEGIN { print "Hello, world!" } -+0kay%
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BASIC opMnLor
传统版BASIC(例如GWBASIC): /aIGq/;Y+a
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10 PRINT "Hello, world!" c94=>p6
20 END p}<60O"r$
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或在提示符输入: );kD0FO1|
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?"Hello, world!":END EX#AJ>?V(
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现代版BASIC(例如Quick BASIC): eze%RjO}
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Print "Hello, world!" zTc*1(^
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以下的语句在Quick BASIC中同样有效: Q<gUu^rq
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? "Hello,world!" 5~j#Z (}u
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BCPL YV!hlYOBi
GET "LIBHDR" 2;0eW&e
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LET START () BE :
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$( } `5k^J$x
WRITES ("Hello, world!*N") aYDo0?kF'
$) ?)186dp
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Befunge H2+b3y-1a]
"!dlrow olleH">v ?{e}ouKYX1
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Qd{8.lB~LQ
+++++++++++++++.>.+++.------.--------.>+.>. qR_>41JU"
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C ~$J(it-a
#include <stdio.h> ts9wSx~[+
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int main(void) Ikw@B)0}
{ t%%()!|)j
printf("Hello, world!\n"); S_/S2(V"
return 0; Cs7ol-\)
} se`Eez}
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C++ t ^[fu,
#include <iostream> DA.k8M
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int main() =$fz</S=J
{ KmTFJ,iM
std::cout << "Hello, world!" << std::endl; ,w3-*z
return 0; qz{9ND|)
} fBj)HoHQW
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C++/CLI 6-fv<Pn
int main() R$8{f:Pj
{ ,(pp+hNq
System::Console::WriteLine("Hello, world!"); 3h d30o
} 6#!CBY^{
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C# (C Sharp) ^9:`D@Z+
class HelloWorldApp V5z2.} 'o-
{ eqsmv[
public static void Main() j~G(7t
{ }#7rg_O]>
System.Console.WriteLine("Hello, world!"); yV )fJ_
} 0hV#]`9`gN
} nqm=snh
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COBOL (8)9S6
IDENTIFICATION DIVISION. 4&sf{tI
PROGRAM-ID. HELLO-WORLD. ?'z/S5&j
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ENVIRONMENT DIVISION. %,_ZVgh0
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DATA DIVISION. w9G|)UDib
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PROCEDURE DIVISION. &hI!mo
DISPLAY "Hello, world!". +tT"
STOP RUN. } &B6
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Common Lisp [
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(format t "Hello world!~%") G
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DOS批处理 H3<tsK=:
@echo off i7XY3yhC
echo "Hello, world!" YWl#!"-
ou <3}g
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Eiffel A}(]J!rc
class HELLO_WORLD A-T-4I
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creation mi7?t/D1Z
make 2c 0;P
#ol
feature AX8~w(sv
make is 6/mz.,g2
local -je} PwT
io:BASIC_IO L
AasmQ
do @6>Q&GYqt
!!io tfGs|x
io.put_string("%N Hello, world!") j'z#V_S
end -- make W_`]7RO8
end -- class HELLO_WORLD
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Erlang &/]en|f"
-module(hello). vS>'LX
-export([hello_world/0]). 4@@Sh`E:
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hello_world() -> io:fwrite("Hello, World!\n"). E=ijt3
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Forth I]v2-rB&-
." Hello, world!" CR P);s0Y|@H
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i *.Y
Fortran >,{sFc
WRITE(*,10) g2|Myz)
10 FORMAT('Hello, World!') <J&S[`U!
STOP ,SR7DiYg
END dgkS5Q$/
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HTML #XDgvX >
<HTML> =#V^t$
<HEAD> &<BBPn@\
<TITLE> Hello World! </TITLE> Kq3c Kp4
</HEAD> \dtiv& x
<BODY> -<s Gu9
<p>Hello World!</p> ^el+ej/=
</BODY> @./h$]6
</HTML> H~+A6g]T
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INTERCAL \sAaVdZJH(
PLEASE DO ,1 <- #13 'ztOl`I5V
DO ,1 SUB #1 <- #238 {=ox1+d
DO ,1 SUB #2 <- #112 W7qh1}_%
DO ,1 SUB #3 <- #112 oZvG Kf
DO ,1 SUB #4 <- #0 O:wG/et
DO ,1 SUB #5 <- #64 &