“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。 JVTG3:zD
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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》。 c6dL
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以下是用不同语言写成的Hello World程序的几个例子: z6FG^
Ada Jp5~iC2d
with Ada.Text_Io; use Ada.Text_Io; S`X;2\:
procedure Hello is X'[SCs
begin 1/w['d4l!
Put_Line ("Hello, world!"); ]b<k%
end Hello; 7,jh44(\=
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汇编语言 \kWceu}H,
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x86 CPU,DOS,TASM iAWPE`u4
MODEL SMALL rMf& HX
IDEAL 4U>
STACK 100H `t ZvIy*
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DATASEG bEy j8=P;
HW DB 'Hello, world!$' <r3F*S=
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CODESEG @ZK|k
MOV AX, @data |'=R`@w~0
MOV DS, AX 2lHJ&fck<
MOV DX, OFFSET HW ='OPU5(;O
MOV AH, 09H ,1F3";`n[
INT 21H O&\;BF5:R
MOV AX, 4C00H }L@!TWR-Qu
INT 21H 0=(5C\w2
END +l&ZN\@0X
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x86 CPU,GNU/Linux,NASM 4(
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). (D{9~^EO>a
;Enter this into "hello.asm" then type: yHk/8
;"nasm -f elf hello.asm" P",~8Aci(
;"ld hello.o -o hello" pt|u?T_+
;"./hello" kY4riZnm
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section .data ;data section declaration ~++y4NB8Q
msg db 'Hello World!',0AH H-0A&oG
len equ $-msg ;string length Cq/*/jBM
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section .text ;code section declaration i+T$&$b
global _start ;entry point (start of execution) Al'
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_start: mov edx,len ;string length Kv!CL9^LX7
mov ecx,msg ;string start )MW.Y
mov ebx,1 ;file handle: stdout i v&:X3iB
mov eax,4 ;sys_write Gv6EJV1i
int 80h ;kernel system call ],&WA?>G
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mov ebx,0 ;return value vQ26U(7\>
mov eax,1 ;sys_exit qeSxE`E"
int 80h ;kernel system call I`E9]b(w
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x86 CPU,Windows,MASM32 SAc}5.
.386 !}Cd_tj6
.model flat,stdcall oC.:mI
option casemap:none &d 9tR\}
;Include 文件定义 p^7ZFUP
include windows.inc _~=X/I R
include user32.inc ,S}[48$
includelib user32.lib # TC
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include kernel32.inc do7 [Nj
includelib kernel32.lib #U(dleT8
;数据段 6
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.data [L]
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szCaption db 'A MessageBox!',0 qnv9?Xh
szText db 'Hello,world!',0 avykg(
;代码段 ft4J.oT
.code O,]t. 1V
start: \qi=Us|=
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Q pAK]
invoke ExitProcess,NULL ;0P2nc:U~
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #:w/vk
end start ]f-< s,@
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BEGIN { print "Hello, world!" } Bj;Fy9[yb
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BASIC )#9/vIQ
传统版BASIC(例如GWBASIC): \zR{D}aS
#ZRQVC; b;
10 PRINT "Hello, world!" QOcB ]G
20 END G?8LYg!-
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或在提示符输入: 9L]x9lI;
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?"Hello, world!":END c*9RzD#Zj
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现代版BASIC(例如Quick BASIC): 3 =KfNz_
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Print "Hello, world!" $j)Er.!9|R
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以下的语句在Quick BASIC中同样有效: BPIp3i
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? "Hello,world!" 8AOJ'~$
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GET "LIBHDR" 12~zS
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LET START () BE \3hhM}6)DM
$( Gc<J x|Q7
WRITES ("Hello, world!*N") 5<<e_n.2q
$) <}pqj3
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DAj@wn3K?
Befunge iL)q':xz
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, "gfy6m
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Brainfuck "O<JVC{m
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7,d^?.~S
+++++++++++++++.>.+++.------.--------.>+.>. $C##S@
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C r3mB"("Z'
#include <stdio.h> Ny/bNQS
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int main(void) -ytSS:|%\
{ #9,!IW]l
printf("Hello, world!\n"); 9qc1^Fs~
return 0; @`t)ly#N
} P>z k
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C++ KM*sLC#
#include <iostream> cYFR.~p
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int main() A=o
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{ &kB[jz_[A
std::cout << "Hello, world!" << std::endl; i44UqEb
return 0; 57'=Qz52
} R0(Nw7!d/[
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C++/CLI ?"$W=*P\o
int main() Wct
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{ L"rLalUw
System::Console::WriteLine("Hello, world!"); if9I7@
} `o8b\p\zn
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C# (C Sharp) |{k;pfPV
class HelloWorldApp !u.{<51b
{ L[)+J2_<
public static void Main() 2T<QG>;)j
{ 7 6~x|6)
System.Console.WriteLine("Hello, world!"); "!i7U2M'
} VHsuC$3W
} c2Ua!p(c
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COBOL {c<MB xk
IDENTIFICATION DIVISION. $g$~TuA
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PROGRAM-ID. HELLO-WORLD. [CGvM{
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ENVIRONMENT DIVISION. ,-ZAI b*
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DATA DIVISION. e,>L&9] ZI
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PROCEDURE DIVISION. >V;JI;[
DISPLAY "Hello, world!". XtRfzqg?K
STOP RUN. 12])``9
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Common Lisp wa6DJ
(format t "Hello world!~%") c5>&~^~>Tx
pMM-LY7%{
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DOS批处理 '
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@echo off XA5gosq
echo "Hello, world!" F'lG=c3N
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g-U'{I5F
Eiffel I&3L1rl3{*
class HELLO_WORLD F IDNhu
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}.
creation m1a0uEA
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make >Y?B(I2e
feature R!lNm,i
make is 7qt<CLJ
local 3M8P%
io:BASIC_IO 8K*X]Z h
do [Maon.t!l
!!io "\Jq2vM
io.put_string("%N Hello, world!") r+3V+:f
end -- make FjRJSMwO,
end -- class HELLO_WORLD 3}= .7qm
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Erlang T5)Xl 'Q
-module(hello). d{0b*l%
-export([hello_world/0]). Kg=TPNf"$
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hello_world() -> io:fwrite("Hello, World!\n"). h`Vb#5ik
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Forth 9~I\WjB
"
." Hello, world!" CR {J%Na&D
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} >b4s!k,
Fortran !p >a,8w
WRITE(*,10) nS"K
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10 FORMAT('Hello, World!') o<1e-
STOP GBzC<e#
END s+(%N8B
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HTML /p~"?9b[ i
<HTML> \)eHf
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<HEAD> ~0w7E0DE[
<TITLE> Hello World! </TITLE> J5)e 7
</HEAD> 91r9RG>
<BODY> &eQzfx=|km
<p>Hello World!</p> C6,GgDH`
</BODY> p18-yt;
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</HTML> D-9zg\\'`
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INTERCAL SKuZik_
PLEASE DO ,1 <- #13 bM;yXgorU
DO ,1 SUB #1 <- #238 j WLZ!a3+
DO ,1 SUB #2 <- #112 Bwjd/id q
DO ,1 SUB #3 <- #112 qF`;xa%,}
DO ,1 SUB #4 <- #0 ,pa,:k?
DO ,1 SUB #5 <- #64 0 lXV+lj
DO ,1 SUB #6 <- #238 0*L|rJf
DO ,1 SUB #7 <- #26 `!S5FE"-
DO ,1 SUB #8 <- #248 D@uw[;Xb5
DO ,1 SUB #9 <- #168 `Gx"3ZUn
DO ,1 SUB #10 <- #24 4q/E7n
DO ,1 SUB #11 <- #16 Fkuq'C<|Y
DO ,1 SUB #12 <- #158 7J~6J.m
DO ,1 SUB #13 <- #52 hE\,4c1
PLEASE READ OUT ,1 oo)P(_"u
PLEASE GIVE UP bW;0E%_
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Java 9Re605xQ6
public class Hello u><ax
{ 6?Q&>V26Y
public static void main(String[] args) 9-o{[
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System.out.println("Hello, world!"); Jc~^32
} yiQke
} v\rOs+.s
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