“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。 qM:*!Aq0g
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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》。 "!_,N@\t
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以下是用不同语言写成的Hello World程序的几个例子: ' |
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Ada td\'BV
with Ada.Text_Io; use Ada.Text_Io; gl!F)RdH
procedure Hello is &cB+la\_
begin x_.}C%
Put_Line ("Hello, world!"); T6Ks]6m_
end Hello; CeW}zkcT
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汇编语言 CGJ>j}C
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x86 CPU,DOS,TASM 2U`g[1
MODEL SMALL .vhEm6wJUM
IDEAL (pkq{: Fs
STACK 100H R'x^Y"
u4.2u}A/R%
DATASEG }R2afTn[;
HW DB 'Hello, world!$' gWHjI3;
{
^
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CODESEG ^F`\B'8MF
MOV AX, @data lxXIu8
MOV DS, AX @[w.!GW%
MOV DX, OFFSET HW glgXSOj
MOV AH, 09H yu@u0vlc
INT 21H 5{O9<~,
MOV AX, 4C00H %Y<3v\`_
INT 21H "BD$-]
END lehuJgz'OO
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x86 CPU,GNU/Linux,NASM ;0]s:0WD0P
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). I vD M2q8f
;Enter this into "hello.asm" then type: ]ppws3*Pa
;"nasm -f elf hello.asm" ()%;s2>F
;"ld hello.o -o hello" &(,-:"{pNR
;"./hello" *4RL
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section .data ;data section declaration T96M=?wh!
msg db 'Hello World!',0AH P'D'+qS
len equ $-msg ;string length %~^:[@xa*
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section .text ;code section declaration [eO6H2@=z
global _start ;entry point (start of execution) XZ[3v9?&n
_start: mov edx,len ;string length MFO1v%m
mov ecx,msg ;string start !DNk!]|
mov ebx,1 ;file handle: stdout LXx`Vk>ky
mov eax,4 ;sys_write -x2&IJ!
int 80h ;kernel system call %] [6TZ}
t[Ywp!y[
mov ebx,0 ;return value a&s&6Q|Y
mov eax,1 ;sys_exit Q!v]njCIB7
int 80h ;kernel system call 2RC@Fu~zaU
dn|OY.`|
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x86 CPU,Windows,MASM32 j`ybz G^
.386 tboc7Hor4
.model flat,stdcall =y WHm
option casemap:none 1i:Q
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F
;Include 文件定义 n`2LGc[rP
include windows.inc `]4bH,%~
include user32.inc 7Hzv-s
includelib user32.lib 7=[/J*-m
include kernel32.inc R?H[{AX
includelib kernel32.lib &(YNz9L
;数据段 5Int,SX
.data t6a$ZN;
szCaption db 'A MessageBox!',0 &&
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szText db 'Hello,world!',0 +tvWp>T+
;代码段 =X}s^KbI{
.code TOXZl3s5#
start: fT
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &VfMv'%x
invoke ExitProcess,NULL >XK |jPK
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |&0zAP"\
end start =%oQIx
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BEGIN { print "Hello, world!" } ])iw|`@dJ
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BASIC )w'GnUqWz
传统版BASIC(例如GWBASIC): M5<cHE
.[8g6:>
10 PRINT "Hello, world!" u$V8fus0
20 END m
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或在提示符输入: `}|$eF&
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?"Hello, world!":END <^Sp4J
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现代版BASIC(例如Quick BASIC): ]aTF0 R
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Print "Hello, world!" ,ou&WI yC
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以下的语句在Quick BASIC中同样有效: ua]?D2
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? "Hello,world!" zaMKwv}BR
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GET "LIBHDR" m.2=,,r<Fq
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LET START () BE JPGEE1!B{b
$( 1_0\_|
WRITES ("Hello, world!*N") d+Au`'{>
$) rugR>&mea
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Befunge \+Pk"M
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< r"\g6<RP
+++++++++++++++.>.+++.------.--------.>+.>. XVWVY}
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C atmTI`i
#include <stdio.h> [|{m/`8C
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int main(void) =%ZR0cWPoI
{ [2Ot=t6]
printf("Hello, world!\n"); D;QV`Z%I
return 0; v!77dj 6I
} 85 <%L:EC
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C++ -5TMV#i
{
#include <iostream> g&`[r6B
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int main() NQ qq\h
{ 0FG|s#Ig
std::cout << "Hello, world!" << std::endl; Fooa~C"
return 0; 'ghwc:Og|%
} y~/i{a;1y
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C++/CLI `6QQS3fk!
int main() l_z@.</8P@
{ -VP da @@w
System::Console::WriteLine("Hello, world!"); %^
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} ; 6*Ag#Z
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C# (C Sharp) FErKr)
class HelloWorldApp 3E]IEf
{ $G@^!(
public static void Main() 71inHg
{ "R9^X3;
System.Console.WriteLine("Hello, world!"); f+W8Gszi
} pSh$#]mZ`
} ti}G/*4
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COBOL tFKR~?Gc
IDENTIFICATION DIVISION. &j_:VP
PROGRAM-ID. HELLO-WORLD. #7yy7Y5
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ENVIRONMENT DIVISION. 8j<+ '
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DATA DIVISION. QQIU5
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PROCEDURE DIVISION. +KKx\m*
DISPLAY "Hello, world!". K}1eQS&$a
STOP RUN. Sw^-@w=!U5
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Common Lisp T_1p1Sg
(format t "Hello world!~%") gg}^@h&?
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DOS批处理 ?~#{3b
@echo off 'p:L"L}Q?
echo "Hello, world!" aq<QKnU
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Eiffel GYM6 `
class HELLO_WORLD [5O`
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creation HG)c\b
make $,L,VYN
feature JU\wvP5j
make is jXALN
local Q1(6U6L
io:BASIC_IO 8
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do
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!!io Q($aN-
io.put_string("%N Hello, world!") ?B`Yq\L)
end -- make *2tG07kI
end -- class HELLO_WORLD Gaxa~?ek
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Erlang Up|>)WFw"
-module(hello). | *J-9
-export([hello_world/0]). ;UB$Uqs6
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hello_world() -> io:fwrite("Hello, World!\n"). C;_*vi2u
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Forth 2E
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." Hello, world!" CR 6
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Fortran LUjev\Re
WRITE(*,10) 999E0A$dkv
10 FORMAT('Hello, World!') F6h|AF|"
STOP ;r}>1LhN
END ;4 rTm@6
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HD95>%
HTML rJ UXA<:2
<HTML> ]A2l%V_7
<HEAD> .0zNt
<TITLE> Hello World! </TITLE> "p{cz(
</HEAD> _hb@O2f
<BODY> zxr|:KC ?&
<p>Hello World!</p> YN@4.&RP
</BODY> %95'oW)lo
</HTML> zz+p6`
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INTERCAL {,aI0bw;
PLEASE DO ,1 <- #13 /\_wDi+#
DO ,1 SUB #1 <- #238 *NDM{WB|)
DO ,1 SUB #2 <- #112 $M T'ZM
DO ,1 SUB #3 <- #112 CNiUHUD
DO ,1 SUB #4 <- #0 xXktMlI
DO ,1 SUB #5 <- #64 D/&^Y'|T
DO ,1 SUB #6 <- #238 iS"(
DO ,1 SUB #7 <- #26
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DO ,1 SUB #8 <- #248 "7k
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DO ,1 SUB #9 <- #168 -OS&(7
DO ,1 SUB #10 <- #24 u0(PWCi2
DO ,1 SUB #11 <- #16 d* 6 lJT
DO ,1 SUB #12 <- #158 JM@}+pX
DO ,1 SUB #13 <- #52 Vp'Zm:
PLEASE READ OUT ,1 ?5<