“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。 hEi]-N\X
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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》。 SeN4gr*
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以下是用不同语言写成的Hello World程序的几个例子: Zk4Hs%n
Ada GR@!mf
with Ada.Text_Io; use Ada.Text_Io; Q1jU{
procedure Hello is N+ZDQa[
begin )uC],CbW{
Put_Line ("Hello, world!"); #qrZ(,I@n
end Hello; 6!dbJ5x1
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汇编语言 g6{.C7m
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x86 CPU,DOS,TASM ig<Eyr
MODEL SMALL [zl@7X1{_
IDEAL _8P"/(
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STACK 100H ) DXN|<A
0]4kR8R3[
DATASEG %tul(Z~<1
HW DB 'Hello, world!$' [Oen{c9A
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CODESEG 8@]*X,umc
MOV AX, @data W^npzgDCo
MOV DS, AX n|2`y?
MOV DX, OFFSET HW Z>gxECi
MOV AH, 09H *GleeJWz
INT 21H 7 4Xk^8
MOV AX, 4C00H wI><kdz
INT 21H
UhN16|x
END ,@kD9n5#
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x86 CPU,GNU/Linux,NASM d0Xb?-
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). TG7Ba[%
;Enter this into "hello.asm" then type: _;(`u!@/{
;"nasm -f elf hello.asm" ]Q,;5>#W
;"ld hello.o -o hello" /_<`#?5T(
;"./hello" 3[I; 3=O
_G%]d$2f`
section .data ;data section declaration EBlfwFd
msg db 'Hello World!',0AH W&CQ87b
len equ $-msg ;string length <k?ofE1o
b~fX=!M
section .text ;code section declaration ]x1MB|a6
global _start ;entry point (start of execution) W,"|([t4.\
_start: mov edx,len ;string length 9zSHn.y
mov ecx,msg ;string start CT,caa
mov ebx,1 ;file handle: stdout cKuU#&FaV
mov eax,4 ;sys_write ?T=]?[
int 80h ;kernel system call !+T\}1f7d
OLh`R]Sd
mov ebx,0 ;return value |$"2R3
mov eax,1 ;sys_exit nX4R
int 80h ;kernel system call S$J}>a#Ry
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1?"$LN
RapHE; <
x86 CPU,Windows,MASM32 F}3<q
.386 !`=ms1%U
.model flat,stdcall e9e%8hL
option casemap:none KiW4>@tY
;Include 文件定义 e~R;
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include windows.inc .{sKEVK
include user32.inc *z[G+JX
includelib user32.lib XndGe=O
include kernel32.inc >2h|$6iWP
includelib kernel32.lib *uHL'Pe;m
;数据段 rMXIw
.data 'f&o%5]
szCaption db 'A MessageBox!',0 RrrW0<Ed
szText db 'Hello,world!',0 r@N 0%JZZ
;代码段 j
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.code h 'VN& T,
start: 2WQKj9iyN
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ].F7.
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invoke ExitProcess,NULL @_"B0$,-i
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1=BDqSZ@9
end start X"WKgC g$
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AWK ?#8',:
BEGIN { print "Hello, world!" } HT]W2^k
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BASIC A4LGF
传统版BASIC(例如GWBASIC): Z$qFjWp
1d/-SxhZ
10 PRINT "Hello, world!"
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20 END i0F.c\
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或在提示符输入: <$\vL
s ^NO(
?"Hello, world!":END mF!/8qk
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现代版BASIC(例如Quick BASIC): yMdEH-?/
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Print "Hello, world!" d:/8P985
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以下的语句在Quick BASIC中同样有效: @L^Fz$Sx
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? "Hello,world!" <viIpz2jh%
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BCPL u\YH,
GET "LIBHDR"
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LET START () BE '[#a-8-JY_
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WRITES ("Hello, world!*N") g\MHv#v*k
$) Pn@k)g
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Befunge z0J$9hEg89
"!dlrow olleH">v ^NJ]~h{n$
, Zgp]s+%E
^_@ [6x-c;H_4
0_yE74i
F#=XJYG1
Brainfuck t~pA2?9@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< {MmHR
+++++++++++++++.>.+++.------.--------.>+.>. `@GqD
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=! v.VF\;
C ;t47cUm6j
#include <stdio.h> jvx9b([<sG
J6x\_]1:*
int main(void) 216+ tX5Z
{ M=[ /v/M=
printf("Hello, world!\n"); 2m.RM&TdB
return 0; T1zft#1~
} ,4y'(DA
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C++ * d6[kY
#include <iostream> xGbr>OqkTX
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int main() a] :tn:q
{ kN uDoo]z
std::cout << "Hello, world!" << std::endl; z9:@~3k.
return 0; G yZYP\'S+
} x_1JQDE
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tq=1C=h
C++/CLI dDH+`;$.
int main() F\1nc"K/(
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System::Console::WriteLine("Hello, world!"); :0o
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} Z4FyuWc3
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C# (C Sharp) Hh @q;0ni
class HelloWorldApp Mr'}IX5
{ M ,V+bt
public static void Main() HE&,?vioy
{ CCKg,v
System.Console.WriteLine("Hello, world!"); WtI1h `Fo
} H3{x;{.b
} :QgC Zq
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R_h(Z{d
COBOL E
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IDENTIFICATION DIVISION. m1_?xU
PROGRAM-ID. HELLO-WORLD. N_<sCRd]9
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ENVIRONMENT DIVISION. \3K 6NA!L
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DATA DIVISION. ^B@4 w\t
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PROCEDURE DIVISION. gd<8RVA
DISPLAY "Hello, world!". oTZ?x}Z1
STOP RUN. "?,3O2t
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Common Lisp ANSv ZqKh
(format t "Hello world!~%") 9[DQ[bL
nPq\J~M
~\dpD
DOS批处理 >_M}l@1
@echo off >V(>2eD'S
echo "Hello, world!" .jMm-vox}
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Eiffel kF'^!Hp
class HELLO_WORLD I^Ichn
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creation ,4j$kR
make VL5kjF3/
feature =f@O~nGm
make is tYIHsm\b
local #%VprcEK
io:BASIC_IO TUhp
do *pP"u::S
!!io 0kgK~\^,.O
io.put_string("%N Hello, world!") YN] w_=
end -- make }7hpx!s,
end -- class HELLO_WORLD j5z, l
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Erlang D,xWc|V
-module(hello). qt]QO1pAd
-export([hello_world/0]). v,vTRrpK
cNC\w%
hello_world() -> io:fwrite("Hello, World!\n"). .Q"3[
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Forth !~UI~-i'
." Hello, world!" CR
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Fortran ;TSnIC)c
WRITE(*,10) 2BH>TmS
10 FORMAT('Hello, World!') a2/r$Tgm
STOP <6<uO\B\
END w:FH2*
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UTA0B&aB
HTML wdBytH6r.
<HTML> ?3SlvKI}H`
<HEAD> ?f']*pD8
<TITLE> Hello World! </TITLE> \!ESmxSa;
</HEAD> e"r'z
n
<BODY> UQ|0Aqwq
<p>Hello World!</p> PL~k
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</BODY> _WK+BxH
</HTML> QZ{&7mc>
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n!Y.?mU6
INTERCAL t{~"vD9Am
PLEASE DO ,1 <- #13 $O}gl Q
DO ,1 SUB #1 <- #238 1\YX|
DO ,1 SUB #2 <- #112 v{
C]\8
DO ,1 SUB #3 <- #112 qjR;c&
q R
DO ,1 SUB #4 <- #0 8e>;E
DO ,1 SUB #5 <- #64 8g>jz
8
DO ,1 SUB #6 <- #238 ~$r^Ur!E\
DO ,1 SUB #7 <- #26 7vr)JT=
DO ,1 SUB #8 <- #248 H'gPGOd
DO ,1 SUB #9 <- #168
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DO ,1 SUB #10 <- #24 EVO5+
DO ,1 SUB #11 <- #16 FGwz5@|E
DO ,1 SUB #12 <- #158 %J.Rm0FD:
DO ,1 SUB #13 <- #52 5mSXf"R^
PLEASE READ OUT ,1 wT*N{).
PLEASE GIVE UP :NbD^h)R
W[^XG\
ac+7D:X
Java +Yi=Wo/
public class Hello PNc200`v4_
{ vJ"@#$.
public static void main(String[] args) !LIWoa[ F.
{ asQ" |]m
System.out.println("Hello, world!"); w-/bLg[L?$
} ULU
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} 1MB
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gFDP:I/`
JSP Q]6nW[@j'
<% 8(3vNuyP
out.print("Hello, world!"); -^#Ix;%
%> )_j.0a
|:!0`p{R
;uoH+`pf
MIXAL K?I@'B'
TERM EQU 19 the MIX console device number 1Za\T?V
ORIG 1000 start address I">z#@CT
START OUT MSG(TERM) output data at address MSG P:*'x9`
HLT halt execution ZlO@PlZ)
MSG ALF "MIXAL" #{h4lte
ALF " HELL" |{9"n<JW
ALF "O WOR" Y!POUMA
}A
ALF "LD " +e?ixvld
END START end of the program yvH:U5%
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