#include &lt;stdio.h&gt;    union stu    &#123;        int ival;        float fval;    &#125;;    void main&#40;&#41;    &#123;        union stu r;        r.ival = 5;        printf&#40;&quot;%d&quot;, r.ival&#41;;    &#125;
A. 9
B. Compile time error
C. 16
D. 5
Answer:A
#include &lt;stdio.h&gt;    union stu    &#123;        int ival;        float fval;    &#125;;    void main&#40;&#41;    &#123;        union stu r;        r.ival = 5;        printf&#40;&quot;%d&quot;, r.ival&#41;;    &#125;
A. 9 B. Compile time error C. 16 D. 5