“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。 ?zqXHv#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》。 S)?B
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以下是用不同语言写成的Hello World程序的几个例子: JG4I-\+H
Ada F!8425oAw
with Ada.Text_Io; use Ada.Text_Io; F{Hy@7
procedure Hello is `h#JDcT;a
begin L^}kwu#
Put_Line ("Hello, world!"); wB{-]\H`\
end Hello; #a|5A:g%
~8K~@e $./
**"sru;@=
汇编语言 V6N#%(?3
ww*F}}(
x86 CPU,DOS,TASM Emo]I[<&q
MODEL SMALL UPsh Y
IDEAL :T2K\@
STACK 100H $
a7^3
hQO~9mQ+!
DATASEG >n/QKFvV5
HW DB 'Hello, world!$' +H_Z!T.@
z`CIgSR
CODESEG zi'?FM[f)
MOV AX, @data xhv)rhu@
MOV DS, AX ~mU#u\r(*
MOV DX, OFFSET HW =n!8>8d
MOV AH, 09H }Na*jr0y9{
INT 21H qSR
%#
MOV AX, 4C00H yL1\V7GI{[
INT 21H O;r8l+
END 5k @k
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3[$VW+YV
x86 CPU,GNU/Linux,NASM eZHi6v)i
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). =Ur/v'm
;Enter this into "hello.asm" then type: fO+;%B
;"nasm -f elf hello.asm" O<5bsKw'r
;"ld hello.o -o hello" Cv3H%g+as
;"./hello" SU^/qF%8
4Y'qoM;
section .data ;data section declaration m-K6y7t
msg db 'Hello World!',0AH _IGQ<U <z
len equ $-msg ;string length
aG!!z>
^?,/_ 3
section .text ;code section declaration k58lmuU
global _start ;entry point (start of execution) MLJ8m
_start: mov edx,len ;string length KW)yTE<
mov ecx,msg ;string start RV~w+%f
mov ebx,1 ;file handle: stdout w t}a`hxu
mov eax,4 ;sys_write uAJC Q)@
int 80h ;kernel system call Q"\[ICu!,
[69aTl>/
mov ebx,0 ;return value 2ZnTT{]_m
mov eax,1 ;sys_exit 2w%1\TcB$
int 80h ;kernel system call HV>W f"1
CUoMB r
MTQdyTDHl
x86 CPU,Windows,MASM32 sfH|sp
.386 0&Qn7L
.model flat,stdcall ) ":~`Z*@
option casemap:none }9'rTLM
;Include 文件定义 Jyn>:Yq(
include windows.inc nHhg#wR
include user32.inc ='f>p+*c%
includelib user32.lib nWh?zf#{
include kernel32.inc xH0Bk<`V:
includelib kernel32.lib tcs
Z!#
;数据段
YEGXhn5E
.data BZE19!
szCaption db 'A MessageBox!',0 OLv(
szText db 'Hello,world!',0 edm&,ph]
;代码段 =,sMOJc>
.code {It4=I)M
start: 6oC(09
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK C>LkU |[
invoke ExitProcess,NULL #3.\}d)
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 0tA+11Iu
end start B^oXUEOImq
% 'P58
z E{.oi
AWK c=7L)w:I
BEGIN { print "Hello, world!" } yjr!8L:m
_3`{wzMA
b2z~C{l
BASIC ";Lpf]<
传统版BASIC(例如GWBASIC): he/FtkU
:R_(+EK1
10 PRINT "Hello, world!"
pNDL:vMWP
20 END 9nB:=`T9
=U?"#
或在提示符输入: 1w35H9\g
E*[X\70
?"Hello, world!":END
B1Xn<Wv
C!:\H<gI
现代版BASIC(例如Quick BASIC): >2_J(vm>
TkK- r(=
Print "Hello, world!" KktQA*G
H4)){\
以下的语句在Quick BASIC中同样有效: w+Ag!O}.L
pbu 8Ib8z
? "Hello,world!" Z_S~#[\7^]
{BgGG@e
wAITE|H<zj
BCPL 8c#u"qF
GET "LIBHDR" & %1XYpA.0
&B[$l`1
LET START () BE ?QZ\KY
$( 9c<lFZb;
WRITES ("Hello, world!*N") z"R-Sme
$) q[r|p"TGov
5pz%DhjLo
4e9mN~
Befunge D\>CEBt
"!dlrow olleH">v S&9{kt|BI
, sz_|py?0
^_@ JVU:`BH
V\Rbnvq
>0{{loqq
Brainfuck "GgK,d}%
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< $/6.4"j
+++++++++++++++.>.+++.------.--------.>+.>. TR]~r2z
'Exj|Y&
Qu!Lc:oM?
C nKch_Jb
#include <stdio.h> 8LB+}N(8f
|eJ4"OPC
int main(void) lQldW|S>
{ oC"c%e8
printf("Hello, world!\n"); :FB#,AOa_
return 0; &p0*:(j
} CpO!xj+
uEH&]M>d_
,qyH B2v
C++ dtr8u
#include <iostream> 9)'L,Xt4:T
m8fxDepFA
int main() J6Cw1Pi
{ lQY?!oj&q
std::cout << "Hello, world!" << std::endl; 5nQ*%u\$Z
return 0; byoDGUv
} [P407Sa"
6I"Q9(
8v_HIx0xu
C++/CLI \_qiUvPf\
int main() $s$z"<
{ hC=9%u{r?
System::Console::WriteLine("Hello, world!"); pl%3RVpoc
} x)h5W+$
#O*
ytZ
3w#kvtDVm
C# (C Sharp) =.f]OWehu.
class HelloWorldApp (@>X!]{$
{ hU@9vU<U
public static void Main() J[du>1D
{ E$T)N U\
System.Console.WriteLine("Hello, world!"); w-pdpbHV
} ]G#og)z4
} t?iCq1
+v{<<
@;!s"!~sv
COBOL "JT R5;`w
IDENTIFICATION DIVISION. g`k_o<'JC
PROGRAM-ID. HELLO-WORLD. 43^%f-J5
eJIBkFW/3y
ENVIRONMENT DIVISION. HI*xk
|]w0ytL>(2
DATA DIVISION. FE,&_J"
$_%yr
~2
PROCEDURE DIVISION. xQT`sK+
DISPLAY "Hello, world!". *2Il{KOA^
STOP RUN. 1$]4g/":o
Ol"*(ea-TX
@.6l^"L
Common Lisp c%n[v3]
(format t "Hello world!~%") sFqZ@t}~
;Z\jX[H
-Xb]=Yf-
DOS批处理 < {$zOF}
@echo off l1fP@|
echo "Hello, world!" ^(r?k_i/
m_wBRan
dq?{?~3
Eiffel OB
FG!.)
class HELLO_WORLD x|&A^hQ
<E[X-S%&
creation s~W:N.}*
make CA, &R<]
feature pn<M`,F~q
make is x >hnH{~w
local ep* (
io:BASIC_IO r~N0P|Tq
do dcew`$SJp
!!io -$yNJ5F`
io.put_string("%N Hello, world!") 8wKF.+_A
end -- make GdVq+,Ge
end -- class HELLO_WORLD ]-FK6jw
j?K]0j;
]~iOO
%&R
Erlang f^z/s6I0
-module(hello). S4508l
-export([hello_world/0]). jl YnV/ ]
_1S^A0ft
hello_world() -> io:fwrite("Hello, World!\n"). O RAKg.49
of!Bz
z'GYU=
Forth xj~5/)XX|X
." Hello, world!" CR N,6(|,m
$\h\,N$y
zcnp?%
Fortran [xXa3W
WRITE(*,10) ="hh=x.5J
10 FORMAT('Hello, World!') fS+Ga1CsH
STOP >jMq-#*4
END i'aV=E5
aVcQ
"$#X[.
HTML ]c%yib
<HTML> vs}_1o
<HEAD> B/u0^!
<TITLE> Hello World! </TITLE> 2YI#J.6]H
</HEAD> r*CI6yP
<BODY> {eo4J&as
<p>Hello World!</p> N'[bA
</BODY> -F\xZ
</HTML> `&]<_Jc1
'S]7:/CI
oVk*G
HQ9+
'_!j9A]g
H 7.@$D;L9
tCH4-~,#
QwPLy O
INTERCAL .4DX/~F
PLEASE DO ,1 <- #13 DdJ>1504
DO ,1 SUB #1 <- #238 Wm! lWQu7
DO ,1 SUB #2 <- #112 ocOzQ13@Y
DO ,1 SUB #3 <- #112 }+ ";W) R
DO ,1 SUB #4 <- #0 Jv(9w[
DO ,1 SUB #5 <- #64 H=b54.J8&
DO ,1 SUB #6 <- #238 e}>8rnR{
DO ,1 SUB #7 <- #26 /3`#ldb%}
DO ,1 SUB #8 <- #248 FrXFm+8
F
DO ,1 SUB #9 <- #168 ~u|k1
DO ,1 SUB #10 <- #24 } m5AO 4:
DO ,1 SUB #11 <- #16 k1Cx~Q)XC
DO ,1 SUB #12 <- #158 xdw"JS}
DO ,1 SUB #13 <- #52 k=">2!O/
PLEASE READ OUT ,1 2
|lm'Hf
PLEASE GIVE UP U,Py+c6
Teq1VK3Hr
GPP{"6q5'
Java w;@DcX$]
public class Hello pd2Lc
$O@
{ n-iy;L^b
public static void main(String[] args) bV|(V>
{ ]r++YIg!j
System.out.println("Hello, world!"); 4JF)w;X}
} mHcxK@qw
} ?z,^QjQ}
Q(Q.(
K6"#&0
JSP 7u8HcHl
<%
c
*<"&
out.print("Hello, world!"); RW19I,d
%> `
O;+N"v
9gFb=&1k
pdCn98}%-
MIXAL
i=67
TERM EQU 19 the MIX console device number 7g@P$e]
ORIG 1000 start address 2p'ujAK
START OUT MSG(TERM) output data at address MSG *a}NRf}W
HLT halt execution fu3~W
MSG ALF "MIXAL" ,=o)R,[
ALF " HELL" AL*P2\8
ALF "O WOR" %J)n#\
ALF "LD " kT|{5Kn&s
END START end of the program x0aPY;,N0
=~;SUO
?1%/G<
Nuva 8z,i/:
<..直接输出..> :5 XNV6^|
Hello, world! 'nH/Z 84
9nW/pv
<..或者..> 1e=<df
xDtq@Rb}
<. GMc{g
// 不带换行 |.kYomJ
? "Hello, world!" [Y@?l]&