“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。 qxYCT$1
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 ac1(lD
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以下是用不同语言写成的Hello World程序的几个例子: RJ{J~-q{
Ada yV31OBC:
with Ada.Text_Io; use Ada.Text_Io; !(3[z>
procedure Hello is +>yspOEz
begin 0wAB;|~*62
Put_Line ("Hello, world!"); dTte4lh
end Hello; GH&5m44
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汇编语言 nP|ah~
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x86 CPU,DOS,TASM {wO.nOB
MODEL SMALL rd"!&i
IDEAL j HObWUX
STACK 100H 2EO9IxIf
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DATASEG l_,6<wWp
HW DB 'Hello, world!$' Mgu9m8
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CODESEG }iLi5Qkx
MOV AX, @data %=V"
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MOV DS, AX )Lk2tvr
MOV DX, OFFSET HW k?/! `
MOV AH, 09H RN;#H_
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INT 21H z80*Ylx
MOV AX, 4C00H /q/^B>]
INT 21H Oi{J}2U
END K7/&~;ZwT
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x86 CPU,GNU/Linux,NASM -O?A"
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). <TSps!(#
;Enter this into "hello.asm" then type: !>&G+R+k
;"nasm -f elf hello.asm" lLK||2d
;"ld hello.o -o hello" Bgai|l
;"./hello" OC\cN%qlw
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section .data ;data section declaration P$3!4D[
msg db 'Hello World!',0AH L3j
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len equ $-msg ;string length S(rnVsW%Ki
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section .text ;code section declaration T8x /&g''
global _start ;entry point (start of execution) 0rif,{"
_start: mov edx,len ;string length [FBc&HN
mov ecx,msg ;string start 9_Z_5w;h
mov ebx,1 ;file handle: stdout Wul8ej:
mov eax,4 ;sys_write %{me<\(
int 80h ;kernel system call f/Z-dM\e
rxZk!- t)L
mov ebx,0 ;return value %:dd#';g
mov eax,1 ;sys_exit VP7LKfv
int 80h ;kernel system call >!c Ff$2'
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x86 CPU,Windows,MASM32 CurU6x1
.386 ?Qts2kae#
.model flat,stdcall ;#*.@Or@Ah
option casemap:none h645;sb0
;Include 文件定义 L$ jii
include windows.inc d[E= HN
include user32.inc }R:oWR
includelib user32.lib ]n$ v ^
include kernel32.inc 5cl^:Ua
includelib kernel32.lib V=+p8nE0
;数据段 e"Z,!Q^-L
.data b'xBPTN
szCaption db 'A MessageBox!',0 +.$:ZzH#
szText db 'Hello,world!',0 2Ns<lh
;代码段 $0]5b{i]
.code U<'$ \P
start: Eh"Y<]$
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ?pA_/wwp
invoke ExitProcess,NULL B E#pHg
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> "#{b)!EH
end start AAF;M}le,
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BEGIN { print "Hello, world!" } MJKPpQ(,
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BASIC [y<s]C6E
传统版BASIC(例如GWBASIC): <FN+
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10 PRINT "Hello, world!" h^J :k
20 END Exat_ L'?
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或在提示符输入: p%OVl[^jp
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?"Hello, world!":END Kke
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现代版BASIC(例如Quick BASIC): u R!'v
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Print "Hello, world!" 'qeUI}[
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以下的语句在Quick BASIC中同样有效: Y2+YmP*z`
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? "Hello,world!" -3XnUGK
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BCPL lI5>d(6p
GET "LIBHDR" rhN"#?
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LET START () BE :[Ie0[H/M
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WRITES ("Hello, world!*N") mUiJ@
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Befunge %\%&1
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#include <stdio.h> =1mIk0H`
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int main(void) 'qidorT>N
{ wee5Nirw6
printf("Hello, world!\n"); b/=>'2f
return 0; ?;go5f+X
} 0LP>3"Sm
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C++ M!\6Fl{ b
#include <iostream> 6%T_;"hb
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int main() k:1|Z+CJ
{ _%aT3C}k
std::cout << "Hello, world!" << std::endl; H]Gj$P=k
return 0; 9O:-q[K**
} X|60W
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C++/CLI cty
int main() Aac7km
{ x2g=%K=
System::Console::WriteLine("Hello, world!"); NbUibxJ
} *0 ;|
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C# (C Sharp) I4zm{ 1g
class HelloWorldApp r / L
{ l{_1`rC'
public static void Main() gac/%_-HH7
{ 'Ub\8<HfJU
System.Console.WriteLine("Hello, world!"); E^m2:J]G
} TI3@/SB>
} Q!W+vh
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COBOL (m=F
IDENTIFICATION DIVISION. w{Y:p[}
PROGRAM-ID. HELLO-WORLD. rVnolA*%
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ENVIRONMENT DIVISION. 0U:9&jP,
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DATA DIVISION. `mKK1x
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PROCEDURE DIVISION. $yMNdBI[
DISPLAY "Hello, world!". ?w@KF%D
STOP RUN. jiLt *>I
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Common Lisp P/dT;YhL
(format t "Hello world!~%") "J3n_3+
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DOS批处理 l' a<k"
@echo off n UD;y}}n
echo "Hello, world!" gUv`G
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Eiffel "H)D~K~*
class HELLO_WORLD rh(77x1|(G
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creation &0euNHH;sL
make i>@"&
feature @!Q\|
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make is
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local EeS VY
io:BASIC_IO &?yVLft
do <ApzcyC
!!io _l](dqyuN(
io.put_string("%N Hello, world!") n6
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end -- make _gP-$&JC
end -- class HELLO_WORLD VW\~OH
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Erlang nsV;6^>
-module(hello). ?rv5Z^D'
-export([hello_world/0]). 9vz"rHV
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hello_world() -> io:fwrite("Hello, World!\n"). {@`Z`h"N
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Forth +J%9%DqF
." Hello, world!" CR 'B$qq[l]S
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Fortran R9V v*F]m@
WRITE(*,10) 5y|/}D>
10 FORMAT('Hello, World!') (]p,Z<f
STOP ,;-55|o\V
END 1\BQq
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HTML {afR?3GK
<HTML> Qxh 1I?h
<HEAD> iKuSk~
<TITLE> Hello World! </TITLE> bZ*J]1y(.
</HEAD> 3_+$x4%
<BODY> Fm{`?!
<p>Hello World!</p> ^H
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</BODY> E;^~}
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INTERCAL #97w6,P+
PLEASE DO ,1 <- #13 Up kw.`D`
DO ,1 SUB #1 <- #238 6@@J>S>
DO ,1 SUB #2 <- #112 Z&R{jQ,
DO ,1 SUB #3 <- #112 :3Hr:~
DO ,1 SUB #4 <- #0 ]za1=~[
DO ,1 SUB #5 <- #64 AT4G]pT
DO ,1 SUB #6 <- #238 mOvwdRKn
DO ,1 SUB #7 <- #26 +c^[[ K"
DO ,1 SUB #8 <- #248 C@i4[g){
DO ,1 SUB #9 <- #168 bC@9
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DO ,1 SUB #10 <- #24 ' |>
DO ,1 SUB #11 <- #16 -I#1xJU
DO ,1 SUB #12 <- #158 Q+UqLass
DO ,1 SUB #13 <- #52 h tn?iLq
PLEASE READ OUT ,1 ]OKs65
PLEASE GIVE UP RwC1C(ZP
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Java kmXaLt2Z
public class Hello 4^mpQ.]lO
{ qm1; ^j&