字符可以做下标吗？

<p>可行。C语言的字符对应ASCII码</p>

<p>可行。C语言的字符对应ASCII码</p>

<p>可行，字符有对应的ASCII码值</p>

相当于ascll

那就会自动转换成对应的ascii值了

可以吧，相当于对应的int。

嗯...

嗯...

<p>可以的</p><p><br ></p>

<p>可以</p>

<p>可以</p>

<p>可以</p>

<p>没问题</p>

<p>可以</p>

<p>可行，转换成对应ASCII码值的下标了。</p><p><code class="brush:cpp;toolbar:false" >#include&nbsp;&lt;stdio.h&gt; int&nbsp;main() { &nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;a[256]; &nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;i&nbsp;=&nbsp;0;&nbsp;i&nbsp;&lt;&nbsp;256;&nbsp;i++&nbsp;)&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a[i]&nbsp;=&nbsp;4; &nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;printf(&quot;%d\n&quot;,&nbsp;a[65]);&nbsp;//&nbsp;4 &nbsp;&nbsp;&nbsp;&nbsp;a['A']&nbsp;=&nbsp;8; &nbsp;&nbsp;&nbsp;&nbsp;printf(&quot;%d\n&quot;,&nbsp;a[65]);&nbsp;//&nbsp;8 &nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;0; }</code></p>

可以的，会自动将其转化为对应的ASC码的值吧

<p>可以的，会自动将其转化为对应的ASC码的值</p>

<p>It's perfectly valid to use values of character type as array indices. An array index can be of any integer type;&nbsp;char<br >,&nbsp;unsigned char<br >, and&nbsp;signed char<br >&nbsp;are all integer types.</p><p>But plain&nbsp;char<br >&nbsp;can be either signed or unsigned, depending on the implementation. Either it has the same range as&nbsp;signed char<br >, or it has the same range as&nbsp;unsigned char<br >; either way, it's still a distinct type.</p><p>So if you have an array with 256 elements, you can safely index it with&nbsp;unsigned char<br >, which has a range of at least 0 to 255. You can't safely index it with&nbsp;char<br >, since it could have negative values.</p><p>Then, I casted it to an unsigned char, but that didn't work either. I ended up getting boundary issues there as well.</p><p>I can't help with that without more information.</p><p><br ></p>

<p>可以的，会自动将其转化为对应的ASC码的值</p>

<p>可以&nbsp;</p>