“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。 ;k]pq 4E
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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》。 u:$x,Q
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以下是用不同语言写成的Hello World程序的几个例子: fCR;Fk2B
Ada Ygb#U'|
with Ada.Text_Io; use Ada.Text_Io; %iv'/B8
procedure Hello is Hn)=:lI
begin LtBH4A
Put_Line ("Hello, world!"); EC0auB7G
end Hello; oCS NA.z
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汇编语言 $oEDyC
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x86 CPU,DOS,TASM b;{C1aa>}
MODEL SMALL zoU.\]#C
IDEAL &k nnWm"
STACK 100H bvG
Vfr "
>vhyKq|g<
DATASEG i y 5
HW DB 'Hello, world!$' #*~Uu.T
RfD$@q9
CODESEG ~+F: QrXcI
MOV AX, @data Jz6PqU|=
MOV DS, AX `}bUf epMJ
MOV DX, OFFSET HW ?l/rg6mbI'
MOV AH, 09H x?kZD~|{)
INT 21H uH#NJoRO
MOV AX, 4C00H KME
#5=~
INT 21H ;S7xJ'H
END ntT|G0E
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x86 CPU,GNU/Linux,NASM gM8 eO-d
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). c8u0\X,
;Enter this into "hello.asm" then type: bu.36\78
;"nasm -f elf hello.asm" ocMf}"
;"ld hello.o -o hello" ,#A,+!4
;"./hello" ) E\pQ5&
@l8?\^N
section .data ;data section declaration SCo9[EJ
msg db 'Hello World!',0AH eIO}/npT]Q
len equ $-msg ;string length \?o%<c5{
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section .text ;code section declaration ;WhB2/5v
global _start ;entry point (start of execution) d7&PbITN
_start: mov edx,len ;string length G~PP1sf
mov ecx,msg ;string start Qmrcng}P
mov ebx,1 ;file handle: stdout #SdaTMLFf
mov eax,4 ;sys_write 1;h>^NOq
int 80h ;kernel system call }MX`WW0\]Z
~?p
> L
mov ebx,0 ;return value ms$o,[
mov eax,1 ;sys_exit %wO~\:F8
int 80h ;kernel system call X}ZOjX!
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F
(#:Si~3
x86 CPU,Windows,MASM32 >iCMjT]4
.386 _I9TG.AA.
.model flat,stdcall GHkSU;})
option casemap:none p#&6Ed*V
;Include 文件定义 'D4NPG`z
include windows.inc 8WH>
include user32.inc KQqlM
includelib user32.lib G`n-WP
include kernel32.inc zt8ZJlNK
includelib kernel32.lib C"sa.#}
;数据段 m} V,+E
.data IH0Uq_
szCaption db 'A MessageBox!',0 0C7"*H0R
szText db 'Hello,world!',0 bhI8b/
;代码段 x\=h^r#w
.code myo/}58Nv
start: )-9/5Z0v
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &`9lIVB,K
invoke ExitProcess,NULL fVkl-<?x
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxN'E;P-
end start ~7m+cWC-+
#\jPBLc
T:-Uy&pBEN
AWK )*uI/E
BEGIN { print "Hello, world!" } * n[6H
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BASIC B4b UcYk
传统版BASIC(例如GWBASIC): GP[$&8\M
j}|6k6t
10 PRINT "Hello, world!" t!~mbx+
20 END G{J9Fb8
\KEL.}B9E
或在提示符输入: AkF1Hj
V6!oe^a7'
?"Hello, world!":END U!Lws#\X
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现代版BASIC(例如Quick BASIC): wjl?@K
eI[z%j[Y*
Print "Hello, world!" y0Tb/&xN
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以下的语句在Quick BASIC中同样有效: l`1ZS8 [.
r8xH A
? "Hello,world!" cz0tnF*&
5pDxFs=v
UKzmRa,s
BCPL X0lIeGwrQ
GET "LIBHDR" w "D"9G
C>;}CH|X
LET START () BE cx$Oh`-Car
$( Fm@GU
WRITES ("Hello, world!*N") VTF),e!
$) [-%oO
[Nq4<NK
:9)>!+|'
Befunge ,Pl[SMt!
"!dlrow olleH">v &K7g8x"x.
, Cjd +\7#G
^_@ j/W#=\xz
v\<`"
u_uC78`p
Brainfuck OLiYjYd
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< M--6oR7
+++++++++++++++.>.+++.------.--------.>+.>. 3~
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C 0D\FFfs
#include <stdio.h> f[z#=zv
~"LOw_BRh
int main(void) lUp 7#q
{ 4(Mt6{q
printf("Hello, world!\n"); #de]b
return 0; zRKg>GG`
} OtC/)sX
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C++ 8>w/Es5
#include <iostream> KJ-D|N,8@^
yeW|Ux:
int main() "c}bqoN
{ >- :U
std::cout << "Hello, world!" << std::endl; HO wJ2L
return 0; YX~H!6l
} *d%m.:)N
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v"s}7trWV
C++/CLI KsHMAp3
int main() rVz#;d!`z
{ %7{6>6%
System::Console::WriteLine("Hello, world!"); L5>>gG,
} NSx DCTw
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7igrRU#1%
C# (C Sharp) {yJ{DU?%Y
class HelloWorldApp o`&idn|,
{ upX/fLc
public static void Main() Sd{>(YWx~
{ SQEXC*08
System.Console.WriteLine("Hello, world!"); Q.5a"(d@
} ov|s5yH8e
} 7%o\O{,U
-
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COBOL Hiw{1E:rW
IDENTIFICATION DIVISION. OnD+/I
PROGRAM-ID. HELLO-WORLD. ;ymUMQ%;/
r*kk/$,2
ENVIRONMENT DIVISION. n9)/(=)>*
haY.rH]z
DATA DIVISION. D L$P
."MBKyg6
PROCEDURE DIVISION. ]qrO"X=
DISPLAY "Hello, world!". )[/+j"F
STOP RUN. ov?>ALRg
7=JiL=
-]N/P{=L
Common Lisp $biCm$a
(format t "Hello world!~%") vuD tEz
rR."_Z2
>SccoI
DOS批处理 VNPuO U=
@echo off d/|@"z^?
echo "Hello, world!"
~DCw
[y
hmks\eb~
\l#=p+x5
Eiffel }B"kJNxV
class HELLO_WORLD O-G4^V8
u<):gI
creation k8w8I$QEM
make Iy"
feature ==c\* o
make is b`1P%OjC
local -N9U lW2S
io:BASIC_IO lS}5bcjR=k
do fLPB *y6
!!io {X8F4
io.put_string("%N Hello, world!") * \f(E#wa
end -- make pnVtjWrbG
end -- class HELLO_WORLD ][D<J0
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+
Erlang Ib]{rmaP
-module(hello). <Y9ps`{}:
-export([hello_world/0]). qc@CV:
\Q]2Zq
hello_world() -> io:fwrite("Hello, World!\n"). tTC[^Dji
b[H& vp
8r+R~{
Forth @|r*yi
." Hello, world!" CR Rh,*tS
MX
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:fo%)_Jc!
Fortran +xB!T1pD
WRITE(*,10) e>Is$+[`7
10 FORMAT('Hello, World!')
}9{6{TD
STOP ,sXa{U
END <+C]^*j
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NNS n]LP
HTML o9>r
-
<HTML> T*O!r`.Ak
<HEAD> IL`5RZi1
<TITLE> Hello World! </TITLE> Xv6z>z.
</HEAD> = R; 0Ed&b
<BODY> 8!E$0^)c|
<p>Hello World!</p> 8%2*RKj
</BODY> /1t(e._
</HTML> 6i, d|
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7w YSP&$
HQ9+ q4Qm:|-
H ZA+$ZU^
J?u",a]|H"
<#LHL
INTERCAL 5"k_Ms7R,
PLEASE DO ,1 <- #13 vY6eg IO
DO ,1 SUB #1 <- #238 ;?bRRW
DO ,1 SUB #2 <- #112 *p p1U>,
DO ,1 SUB #3 <- #112 eQJLyeR+
DO ,1 SUB #4 <- #0 R7( + ^%
DO ,1 SUB #5 <- #64 J3g>#N]='(
DO ,1 SUB #6 <- #238 V_(lZDjh*
DO ,1 SUB #7 <- #26 U3az\E)HV
DO ,1 SUB #8 <- #248 8Q?)L4.]
DO ,1 SUB #9 <- #168 p%_r0
DO ,1 SUB #10 <- #24 DBbmM*r
DO ,1 SUB #11 <- #16 j=M_>
DO ,1 SUB #12 <- #158 0g~WM
DO ,1 SUB #13 <- #52 ^=}~
PLEASE READ OUT ,1 T&6{|IfM_
PLEASE GIVE UP :>;-uve8'
WSKG8JT^|
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Java kjJ\7x6M
public class Hello rN8 ZQiJC
{ '9]%#^[Q
public static void main(String[] args) i8+kc_8#d
{ u3w `(3{<
System.out.println("Hello, world!"); :/K 'P`JaL
} Ds$FO}KD{
} }|&