擅长:python、mysql、java
<p>不能使用<code>==</code>比较字符串</p>
<pre><code>if (wordoftheday == "1"){email = true;}
</code></pre>
<p>应该是</p>
<pre><code>if (strcmp(wordoftheday, "1") == 0){email = true;}
</code></pre>
<p>而且(正如@chux所指出的),您似乎忘记了<code>else</code>:</p>
<pre><code> if (strcmp(wordoftheday, "1") == 0)
email = true;
else
if (strcmp(wordoftheday, "0") == 0)
email = false;
else {
lcd.clear();
lcd.print(wordoftheday);
}
</code></pre>