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<td width='600' align='center' height='30' class=title3><font size='3'>Basic语言解释器(1.0)</font></td>
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<p><font color='#999999'> <font color='#000000'>作者:</font><a href=mailto:tangl_99@sohu.com>tangl_99</a> <font color='#000000'>网址:</font><a href=></a> <font color='#000000'>日期:</font>2002-8-15</font></p>
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<td height='10' ><script src='../../viewed.asp?softid=13338'></script> <font color='#999999'>(<font color='#000000'>软件大小</font>:66k)</font></td>
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<td width='600' class=tdmain><script src='/adv/soft_ad.asp'></script> Basic语言有许多版本,本软件是以Visual Basic的一些基础语法做成的Basic语言解释器.能够运行一般的Basic程序.<br>做此软件的目的不是为了做一个真正的Basic,而是给大家参考做语言解释方面的知识,所以我将它列入源程序列。<br>关于此Basic运行的手册说明如下:<br>//////////////////////////////////////<br>首先.<br>你直接<br>用tj filename就可以执行filename这个VB程序了<br>我在软件里加入了两个basic程序:demo.txt,demo2.txt<br>你可以在dos下输入:<br>tj demo.txt<br>或者<br>tj demp2.txt<br>来本Basic解释器来运行这两个basic程序<br><br><br>1.变量<br>本VB只支持整数变量Integer<br>譬如你可以 Dim A As Integer定义一个变量<br>2.本Basic还没有常量<br>3.语句<br>本VB支持IF Then<br>可以有if a>;;;;;;;b then<br> if a=b then<br> if a<;;;;;;;b then<br> 但是没有 if a<;;;;;;;=b 或 if a<;;;;;;;>;;;;;;;b if a>;;;;;;;=b<br>本VB支持 Do Until a<;;;;;;;b ... Loop<br> Do ... Loop While a<;;;;;;;b<br> 但是没有For Next(没有必要了)<br>4.过程<br>本VB支持自定义过程<br> 如Sub MySub (Dim a As Integer, Dim b As Integer...)<br> 可以直接在过程中代用另一过程<br>本VB不支持函数.<br>5.排错<br>虽然本VB有排错的功能,但是没有什么用,如果有你写的VB程序有错,请自己检查好了<br><br><br>由于本人没有学过《编译原理》所以做的不好,等我学完《编译原理》后再做个好的.<br><br>如果程序上有什么问题,请联系我:<br>tangl_99@sohu.com<br>QQ:8664220<br>////////////////////////////////////</td>
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