安装

<p>#include &lt;stdio.h&gt;</p><p>#define DR (1000000000000000ull)</p><p>int main(void)&nbsp;</p><p>{</p><p> unsigned long long zhengshu,xiaoshu,zhengshu1,zhengshu2,xiaoshu1,xiaoshu2;</p><p> scanf(&quot;%llu.%llu&quot;,&amp;zhengshu1,&amp;xiaoshu1);</p><p> scanf(&quot;%llu.%llu&quot;,&amp;zhengshu2,&amp;xiaoshu2);</p><p> </p><p> xiaoshu=(xiaoshu1+xiaoshu2)%DR;</p><p> zhengshu=(xiaoshu1+xiaoshu2)/DR+zhengshu1+zhengshu2;</p><p> </p><p> printf(&quot;%llu.%015llu&quot;,zhengshu,xiaoshu);</p><p> </p><p> </p><p> </p><p> return 0;</p><p>}</p><p><br ></p>