“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。 3 }~.#`QeY
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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》。 lLhvpvT
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以下是用不同语言写成的Hello World程序的几个例子: jMr [UZ
Ada |C"(K-do
with Ada.Text_Io; use Ada.Text_Io; =z#6mSx|W
procedure Hello is cuzU*QW"g
begin rO4R6A
Put_Line ("Hello, world!"); [ @ >}
end Hello; `Y]t*`
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汇编语言 HueGARS
D y+)s-8
x86 CPU,DOS,TASM n<q1itjD
MODEL SMALL d^h`gu~3
IDEAL y``[CBj
STACK 100H f3PDLQA
Bl[4[N
DATASEG /5M0[C E
HW DB 'Hello, world!$' %]G'u
7W[+e&
CODESEG )<YfLDgTs
MOV AX, @data 6.5E
d-
MOV DS, AX s R/z)U_
MOV DX, OFFSET HW V9`?s0nn^
MOV AH, 09H Pa)'xfQ$Y6
INT 21H M18> %zM
MOV AX, 4C00H -J &y]'
INT 21H Z:eB9R#2y
END |xYr0C[Pq
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x86 CPU,GNU/Linux,NASM oD<aWZ"Z
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). "qh~wK J
;Enter this into "hello.asm" then type: {0L.,T~g+[
;"nasm -f elf hello.asm" F-R5Ib-F*A
;"ld hello.o -o hello" )O+V ft
;"./hello" >ElK8
NW]zMU{c
section .data ;data section declaration 'k'"+
msg db 'Hello World!',0AH t?Ku6Z'
len equ $-msg ;string length GY`mF1b
/tdRUX
section .text ;code section declaration (}B3df
global _start ;entry point (start of execution) E)>.2{]C>
_start: mov edx,len ;string length okm
}%#|
mov ecx,msg ;string start wF=?EK(;P{
mov ebx,1 ;file handle: stdout Hnft1
mov eax,4 ;sys_write ~#MXhhqB
int 80h ;kernel system call b
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^iA_<@[`X[
mov ebx,0 ;return value NJ^Bv`
mov eax,1 ;sys_exit _w}l,
int 80h ;kernel system call WU$l@:Yo
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y:',)f }
x86 CPU,Windows,MASM32 <>v=jH|L
.386 $U=j<^R}a
.model flat,stdcall 9QP- ~V{$
option casemap:none eQqnPqi-
;Include 文件定义 v`r![QpYf
include windows.inc _.%U}U
include user32.inc {k}$L|w
includelib user32.lib w%1-_;.aU6
include kernel32.inc ;~,)6UX7
includelib kernel32.lib 9 1.gE*D
;数据段 8AVtUU
.data P(%^J6[>
szCaption db 'A MessageBox!',0 #fx>{ vzH
szText db 'Hello,world!',0 $;pHv<
;代码段 1'B& e)
.code ZS<`.L6B3
start: i&TWIl8
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK =28ZSo^
invoke ExitProcess,NULL H-,p.$3}
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lFtH;h,==v
end start 6$)FQ
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AWK kBU`Q{.
BEGIN { print "Hello, world!" } (u4'*[o\t
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BASIC "+M0lGTB
传统版BASIC(例如GWBASIC): Te%V+l
[sNvCE$\]
10 PRINT "Hello, world!" NTo[di\_
20 END e I9#JM|2
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或在提示符输入: sd9b9?qiu
v|MT^.
?"Hello, world!":END #-i#mbZ e
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现代版BASIC(例如Quick BASIC): T/FZn{I
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Print "Hello, world!" AJ3%Z$JJ;s
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以下的语句在Quick BASIC中同样有效: w^9< I]
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? "Hello,world!" D\Y,2!I
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9}_'
BCPL 4jc?9(y%
GET "LIBHDR" VsJKxa4
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LET START () BE O^PN{u
$( (*b<IGi;
WRITES ("Hello, world!*N") 1?yj<^"
$) dBwoAq`'
.Cf!5[0E
MsZx 0]
Befunge ?6]B6
"!dlrow olleH">v =XtQ\$Pax
, *$5p,m6G
^_@ D2GF4%|
G[*z,2Kb>
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Brainfuck {kBsiSvsA;
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< CiGXyhh
+++++++++++++++.>.+++.------.--------.>+.>. =av0a!
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C vaJl}^T
#include <stdio.h> 1Q!kk5jE
V1,/qd_
int main(void) ^|=P9'4Th
{ Qwt0~9n(
printf("Hello, world!\n"); ^_i)XdPU
return 0; e(N},s:_
} F+GX{e7E\
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j!y9E~Zz
C++ K a&
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#include <iostream> @?3^Ks_
k s\q^ten
int main() -`DYDIr
{
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std::cout << "Hello, world!" << std::endl; M^Y[Y@U=p
return 0; jf- XVk5q
} uI9*D)
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IC5QH<.$C
C++/CLI x.Egl4b3
int main() %)r:!R~R
{ J
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System::Console::WriteLine("Hello, world!"); iCA-X\E
} lVQE}gd%m
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C# (C Sharp) !tt 8-Y)i
class HelloWorldApp Ws7fWK;
{ m [^)Q9o}
public static void Main() .d}yQ#5z
{ 4sntSlz)~k
System.Console.WriteLine("Hello, world!"); 2$kB^g!:o
} Y,GlAr s4
} "?F[]8F.b
V8):!
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COBOL )c&ya|h
IDENTIFICATION DIVISION. 6)ibXbH
PROGRAM-ID. HELLO-WORLD. 6u #eLs
1U#W=Fg'
ENVIRONMENT DIVISION. _B#x{ii
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DATA DIVISION. /FE+WA}r
#*/nUbsg
PROCEDURE DIVISION. =1dczJHV
DISPLAY "Hello, world!". 05k'TqT{c
STOP RUN. #O!2
m~*qS4
]Q ]y*
Common Lisp Tx~w(A4:
(format t "Hello world!~%") $kxP5q%9
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=
g
&
DOS批处理 S*=^I2;
@echo off |" WL
echo "Hello, world!" S9P({iZK
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m3Wc};yE*Q
Eiffel =1,!EkG
class HELLO_WORLD $*G3'G2'iS
p0 X%^A,4
creation zl6]N3+4
make
sZCK?
feature ?wPTe^Qtv
make is #7Q9^rG
local i a!!jK}
io:BASIC_IO ]|eMEN['
do
q/ Y4/
!!io c:Cw#
io.put_string("%N Hello, world!") 'DVn /3?X
end -- make MymsDdQ]
end -- class HELLO_WORLD nvf5a-C+q
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Erlang p@%Pdx
-module(hello). j@(S7=^C6%
-export([hello_world/0]). 5hy7}*dR
NZv 8#
hello_world() -> io:fwrite("Hello, World!\n"). |v%$Q/zp&
;"0bVs`.^e
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Forth >QvqH 2
." Hello, world!" CR 1Z)P.9c
hWbu
Z%
{ 22ey`@`h
Fortran +58^{_k+%
WRITE(*,10) .<>t2,Af
10 FORMAT('Hello, World!') ;"Qq/knVL
STOP _g/d/{-{Q
END >*gf1"
SF*mY=1
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HTML YToG'#qs
<HTML> d*Su
c
<HEAD> /nA>ox78
<TITLE> Hello World! </TITLE> ^_Lnqk6
</HEAD> 9C,gJp}P
<BODY> NpZ'pBl
<p>Hello World!</p> 9ThsR&h3
</BODY> QxE%C
</HTML> ty~Sf-Pri
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EiC["M'}
HQ9+ g]HxPq+O
H Z{B [r;
yC5>k;/6#K
6wB
!dl
INTERCAL y'8T=PqY[t
PLEASE DO ,1 <- #13 lshSRir
DO ,1 SUB #1 <- #238 =/|GWQj
DO ,1 SUB #2 <- #112 u c!6?+0h
DO ,1 SUB #3 <- #112 P;25F
DO ,1 SUB #4 <- #0 /_cpSq
DO ,1 SUB #5 <- #64 ^Ff fc@=
DO ,1 SUB #6 <- #238 lY`WEu
DO ,1 SUB #7 <- #26 Et*LbU
DO ,1 SUB #8 <- #248 Pfvb?Hy
DO ,1 SUB #9 <- #168 $<Gt^3e
DO ,1 SUB #10 <- #24 CpN*1s})d
DO ,1 SUB #11 <- #16 7YTO{E6]d\
DO ,1 SUB #12 <- #158 l>`S<rGe
DO ,1 SUB #13 <- #52 !K*3bY`#
PLEASE READ OUT ,1 K[noW
PLEASE GIVE UP ZUB]qzmK
\ :@!rM
md{1Jn"
Java rM~Mqpk
public class Hello r\b$/:y<e
{ ]OKKR/:
public static void main(String[] args) JK^%V\m
{ T` v
System.out.println("Hello, world!"); <MhODC")
} ct*~\C6Ze
} ?j!/Hc/b4
k~<ORnda
-t`KCf,0
JSP YL;*%XmAG
<% TffeCaBv
out.print("Hello, world!"); bsc b
%> !C' Y
7
9ys[xOh
WM
J{uqbrJICr
MIXAL \"K:<+RH
TERM EQU 19 the MIX console device number yq[CA`zVN
ORIG 1000 start address >]\oVG
START OUT MSG(TERM) output data at address MSG ]Ah<kq2sk
HLT halt execution ,+n{xI2
MSG ALF "MIXAL" 1RQM-0W,
ALF " HELL" 'OYnLz`"6
ALF "O WOR" .0y .0=l
ALF "LD " v>Kv!OY:c
END START end of the program 7&|&y
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w 01\KV
m<4tH5};d
Nuva ` NvJ
<..直接输出..> 8`b_,(\ N
Hello, world! L{6Vi&I84[
olDzmy(=W*
<..或者..> a=^>A1=
60p*4>^v
<. eNt1P`2[
// 不带换行 W2,Uw1\:1
? "Hello, world!" @z.HyQ_v
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// 或者 0',-V2
0(!=N1l
// 带换行 G?{uR6s>#
?? 'Hello, world!' I9r> 3?
.> p8u-3
cf1GA
jJY!;f
OCaml L/J)OJe\
let main () = D~<0CQ3n.
print_endline "Hello world!";; }%eXGdC
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iX'#~eK*<
Pascal :.EVvuXI
program Hello; 2SVJKX_V+
begin K0?:?>*b#
writeln('Hello, world!'); GCA?sFwo>
end. |/35c0IM
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Perl uzUZuJ
#!/usr/local/bin/perl GSu&Z