“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。 Cgh84
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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》。 xHJkzI
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以下是用不同语言写成的Hello World程序的几个例子: !@8i(!xb
Ada VK1B}5 /
with Ada.Text_Io; use Ada.Text_Io; z^Ikb(KC
procedure Hello is ozRTY9S
_;
begin R( FQ+h
Put_Line ("Hello, world!"); @y`xFPB
end Hello; G`>]ng
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C=r2fc~w
汇编语言 Em@:QmEN
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x86 CPU,DOS,TASM W_Y8)KxG:L
MODEL SMALL :Q3pP"H,}
IDEAL #m{*]mY@
STACK 100H <TRhn z
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DATASEG NBc^(F"
HW DB 'Hello, world!$' Ws@'2i\;
SNH 3C1
CODESEG &EQhk9j
MOV AX, @data LtMM89u
MOV DS, AX }\7UU?@ n
MOV DX, OFFSET HW ~!r;?38V`
MOV AH, 09H NSB6 2
INT 21H Kh(`6 f
MOV AX, 4C00H f=R+]XPzz
INT 21H gaY&2
END >dt*^}*
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gK[;"R)4o@
x86 CPU,GNU/Linux,NASM !sm/BsmL7T
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !V37ePFje
;Enter this into "hello.asm" then type: 1Qf}nWy
;"nasm -f elf hello.asm" $?0ch15/
;"ld hello.o -o hello" gtA34iw
;"./hello" UDg's
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section .data ;data section declaration IL %]4,
msg db 'Hello World!',0AH =xI'|%
len equ $-msg ;string length V >'
+hmFFQQ}
section .text ;code section declaration @9gZH_ur>E
global _start ;entry point (start of execution) s.}K?)mH
_start: mov edx,len ;string length \7/yWd{N$
mov ecx,msg ;string start U+)p'%f;
mov ebx,1 ;file handle: stdout y3dk4s77
mov eax,4 ;sys_write LEgP-sW
int 80h ;kernel system call FRrp@hE
\@:,A]
mov ebx,0 ;return value cj8cV|8@
mov eax,1 ;sys_exit m,E$KHt (
int 80h ;kernel system call +JU, ^A#X
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x86 CPU,Windows,MASM32 !SQcV'
.386
|/*Pimk
.model flat,stdcall XWp8[Cxs
option casemap:none Iv6 q(c
;Include 文件定义 {q?&h'#y
include windows.inc EMW6'
include user32.inc
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includelib user32.lib G:=hg6'
include kernel32.inc -Ks>s
includelib kernel32.lib 7w/IHM L
;数据段 m.e]tTe
.data )?*YrWO{
szCaption db 'A MessageBox!',0 I9*cEZ!l=e
szText db 'Hello,world!',0 n~* ".ZC'Y
;代码段 %X{EupiFA
.code @Iv;y*y
start: fe?Z33V
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK RP&bb{Y
invoke ExitProcess,NULL 'jtC#:ePK
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> smQ^(S^
end start EiW|+@1
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AWK 6Dq4Q|C
BEGIN { print "Hello, world!" } #.bW9j/
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BASIC JbMTULA
传统版BASIC(例如GWBASIC): $1an#~
_IDZ.\'>$
10 PRINT "Hello, world!" @p+;iS1}
20 END %iN>4;T8
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或在提示符输入: ,BU;i%G&s
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?"Hello, world!":END 'YNaLZ20
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现代版BASIC(例如Quick BASIC): g{65 QP
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Print "Hello, world!" |p11Jt[
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以下的语句在Quick BASIC中同样有效: (\9`$
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? "Hello,world!" ETe4I`d{
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BCPL n|SV)92o1
GET "LIBHDR" z$32rt8{`v
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LET START () BE >qjV{M
$( }]?Si6_ZZ
WRITES ("Hello, world!*N") 1 DWoL}Z
$)
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<B"sp r&1
Befunge (q>
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Brainfuck RgE`H r
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< "/#JC}]
+++++++++++++++.>.+++.------.--------.>+.>. tT$OnZu&
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C mP(3[a_Q
#include <stdio.h> @fL ^I&++
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int main(void) Hd|l6/[xz
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printf("Hello, world!\n"); f^WTsh]
return 0;
--$o$EP`
} v<qh;2
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C++ Y Y:BwW:
#include <iostream> f&
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int main() V|7YRa@
{ L+%"ew
std::cout << "Hello, world!" << std::endl; vh9* >[i
return 0; =P-&dN
} `+JFvn!
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C++/CLI ~}/Dl#9R!
int main() l^B.iB
{ E_HB[9
System::Console::WriteLine("Hello, world!"); o_b[ *
} cPGlT"
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C# (C Sharp) BxY t*b%
class HelloWorldApp
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{ s:`i~hjq
public static void Main() 85{m+1O~
{ o9?@jjqH
System.Console.WriteLine("Hello, world!"); +>w]T\[1~
} ]6&NIz`:,
} \>L,X_DL
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COBOL d1/emwH
IDENTIFICATION DIVISION. D)_
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PROGRAM-ID. HELLO-WORLD. Rd?}<L
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ENVIRONMENT DIVISION. Nz{dnV{&x;
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DATA DIVISION. OI R5QH
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PROCEDURE DIVISION.
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DISPLAY "Hello, world!". 0MQ= Rt
STOP RUN. #F*|@
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Common Lisp Vs>Pv$kW
(format t "Hello world!~%") w7nt $L5
#XV=,81w
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DOS批处理 C
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@echo off $o6/dEKQ
echo "Hello, world!" Ur j*V0^
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Eiffel ,m=F
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class HELLO_WORLD [+#m
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creation rvA>khu0/
make HN47/]"*
feature WxdQ^#AE
make is )cfi@-J+#
local myx/ |-V"F
io:BASIC_IO #kg`rrFr
do _iwG'a[`
!!io 4"@<bKx
io.put_string("%N Hello, world!") aCQtE,.
end -- make NgNGq\!
end -- class HELLO_WORLD Hg+<GML
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Erlang 6*8Wtq
-module(hello). vr!J3H f
-export([hello_world/0]). 91
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Xo^8o0xi
hello_world() -> io:fwrite("Hello, World!\n"). AXfU$~
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h\RX/C!+
Forth D6SUzI1+H
." Hello, world!" CR $QX$r N
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Fortran uL'f8Pqg
WRITE(*,10) f^%3zWp|-
10 FORMAT('Hello, World!') PSrx!
STOP &\zYbGU
END F<4rn
;w{<1NH2+.
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HTML M,Gy.ivz
<HTML> :XKYfc_y
<HEAD> ~G@NWF?7
<TITLE> Hello World! </TITLE> $+gQnI3w
</HEAD> Ht`fC|E
<BODY> /iW+<@Mas
<p>Hello World!</p> ]kh]l8t ^
</BODY> Rq4;{a/j
</HTML> ~NGM6+9
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INTERCAL Jcw^Z,
PLEASE DO ,1 <- #13 6#w>6g4V~R
DO ,1 SUB #1 <- #238 G,8mFH
DO ,1 SUB #2 <- #112 QE<Z@/V*a
DO ,1 SUB #3 <- #112 OqGp|`
DO ,1 SUB #4 <- #0 B`pBIUu
DO ,1 SUB #5 <- #64 cJKnB!iL5
DO ,1 SUB #6 <- #238 N,t9X7G&
DO ,1 SUB #7 <- #26 F)P:lvp<r
DO ,1 SUB #8 <- #248 /%$Zm^8c
DO ,1 SUB #9 <- #168 LUbhTc
DO ,1 SUB #10 <- #24 iUKjCq02
DO ,1 SUB #11 <- #16 U#<d",I
DO ,1 SUB #12 <- #158 YV>a 3
DO ,1 SUB #13 <- #52 FT).$h~+4
PLEASE READ OUT ,1 iIfiv<(ChM
PLEASE GIVE UP IPot][ N>
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Java ]&'!0'3`
public class Hello o.s'0xP]
{ (6,:X
public static void main(String[] args) AvL /gt:
{ %$BRQ-O
System.out.println("Hello, world!"); 7uBx
} j
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} {uDW<