<input type="checkbox" name="arr" id="arr" value="0"/>数组</input>
<input type="checkbox" name="fun" id="fun" value="0"/>函数</input>
<input type="checkbox" name="point" id="point" value="0"/>指针</input>
<input type="checkbox" name="struct" id="struct" value="0"/>结构体</input>
<input type="checkbox" name="recursion" id="recursion" value="0"/>递归函数</input>