1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
<!DOCTYPE html>
<html lang="en" dir="ltr" class="no-js">
<head>
<meta charset="utf-8" />
<title>nl:readline [BASIC 256 - Language Documentation]</title>
<link rel="stylesheet" type="text/css" href="lib/exe/cssc171c1dfe8519125bb40a349172b001a.css"/>
</head>
<body>
<div id="dokuwiki__site"><div id="dokuwiki__top" class="site dokuwiki mode_show tpl_dokuwiki ">
<div id="dokuwiki__header"><div class="pad group">
<div class="headings group">
<h1><a href="start.html" accesskey="h" title="[H]"><img src="lib/tpl/dokuwiki/images/logo.png" width="64" height="64" alt="" /> <span>BASIC 256 - Language Documentation</span></a></h1>
</div>
</div>
<div class="breadcrumbs">
<div class="youarehere"><span class="bchead">You are here: </span><span class="home"><bdi><a href="start.html" class="wikilink1" title="start">start</a></bdi></span> » <bdi><a href="nl_start.html" class="wikilink1" title="nl:start">nl</a></bdi> » <bdi><span class="curid"><a href="nl_readline.html" class="wikilink1" title="nl:readline">readline</a></span></bdi></div>
</div>
<hr class="a11y" />
</div></div>
<div class="wrapper group">
<div id="dokuwiki__content"><div class="pad group">
<div class="pageId"><span>nl:readline</span></div>
<div class="page group">
<div id="dw__toc">
<h3 class="toggle">Table of Contents</h3>
<div>
<ul class="toc">
<li class="level2"><div class="li"><a href="nl_readline.html#readline">Readline</a></div>
<ul class="toc">
<li class="level3"><div class="li"><a href="nl_readline.html#formaat">Formaat</a></div></li>
<li class="level3"><div class="li"><a href="nl_readline.html#beschrijving">Beschrijving</a></div></li>
<li class="level3"><div class="li"><a href="nl_readline.html#voorbeeld">Voorbeeld</a></div></li>
</ul></li>
</ul>
</div>
</div>
<h2 class="sectionedit1" id="readline">Readline</h2>
<div class="level2">
</div>
<h3 class="sectionedit2" id="formaat">Formaat</h3>
<div class="level3">
<p>
<strong>readline</strong><br/>
<strong>readline</strong>()<br/>
<strong>readline</strong>(<em>bestandsnr</em>)
</p>
</div>
<h3 class="sectionedit3" id="beschrijving">Beschrijving</h3>
<div class="level3">
<p>
Deze functie leest het bestand lijn per lijn uit.
</p>
<p>
Specifieer je geen bestandnummer dan gebruikt de functie bestandnr 0
</p>
</div>
<h3 class="sectionedit4" id="voorbeeld">Voorbeeld</h3>
<div class="level3">
<pre class="code basic4gl"><span class="br0">(</span><span class="br0">(</span>prorgamma gevonden in <span class="sy0">/</span>home<span class="sy0">/</span>...<span class="sy0">/</span>basic<span class="sy0">/</span>Examples<span class="sy0">/</span>testing<span class="br0">)</span><span class="br0">)</span>
# testlineio.kbs <span class="sy0">-</span> test <span class="kw2">readline</span>, <span class="kw2">writeline</span>, <span class="kw3">and</span> eof
# <span class="nu0">2008</span><span class="sy0">-</span>08<span class="sy0">-</span><span class="nu0">29</span> jmr
open <span class="st0">"foo.txt"</span>
<span class="kw3">reset</span>
<span class="kw3">for</span> l <span class="sy0">=</span> <span class="nu0">1</span> <span class="kw3">to</span> <span class="nu0">8</span>
<span class="kw2">writeline</span> <span class="st0">"Data file line "</span> <span class="sy0">+</span> l <span class="sy0">+</span> <span class="st0">"."</span>
<span class="kw3">next</span> l
l <span class="sy0">=</span> <span class="nu0">0</span>
donext<span class="sy0">:</span>
<span class="kw3">if</span> eof <span class="kw3">then</span> <span class="kw3">goto</span> done
l <span class="sy0">=</span> l <span class="sy0">+</span> <span class="nu0">1</span>
a<span class="sy0">$</span> <span class="sy0">=</span> <span class="kw3">read</span>
<span class="kw2">print</span> <span class="st0">"line "</span> <span class="sy0">+</span> l <span class="sy0">+</span> <span class="st0">"="</span> <span class="sy0">+</span> a<span class="sy0">$</span>
<span class="kw3">goto</span> donext
done<span class="sy0">:</span>
<span class="kw2">print</span> <span class="st0">"total of "</span> <span class="sy0">+</span> l <span class="sy0">+</span> <span class="st0">" lines."</span>
close
<span class="kw3">end</span></pre>
<p>
Dir programma opent eerst Foo.txt, maakt het leeg en schrijft er dan 8 regels in. VErvolgens wordt elke lijn uitgelezen als token in variable a$ en uitgeschreven op het scherm. Dit ziet er dan zo uit:
</p>
<p><a class="folder" href="nl_readline.html#folded_1"> Resultaat</a></p><div class="folded hidden" id="folded_1">
<pre class="code">line 1=Data file line 1.
line 2=Data file line 2.
line 3=Data file line 3.
line 4=Data file line 4.
line 5=Data file line 5.
line 6=Data file line 6.
line 7=Data file line 7.
line 8=Data file line 8.
total of 8 lines.
</pre>
</div><hr />
<p>
<a href="nl_read.html" class="wikilink1" title="nl:read">vorige</a> | <a href="nl_write_and_read.html" class="wikilink1" title="nl:write_and_read">Lezen en schrijven</a> | <a href="nl_reset.html" class="wikilink1" title="nl:reset">volgende</a>
</p>
</div>
<span id="folded_reveal" style="display:none;"></span><span id="folded_hide" style="display:none;"></span>
</div>
<div class="docInfo"><bdi>nl/readline.txt</bdi> · Last modified: 2012/02/05 13:59 by <bdi>tlesseliers</bdi></div>
</div></div>
<hr class="a11y" />
</div>
<div id="dokuwiki__footer"><div class="pad">
<div class="license">Except where otherwise noted, content on this wiki is licensed under the following license: <bdi><a href="http://creativecommons.org/licenses/by-sa/3.0/" rel="license" class="urlextern">CC Attribution-Share Alike 3.0 Unported</a></bdi></div>
</div></div>
</div></div>
<div id="screen__mode" class="no"></div>
</body>
</html>
|
