#include &lt;stdio.h&gt;    int x;    void main&#40;&#41;    &#123;        m&#40;&#41;;        printf&#40;&quot;%d&quot;, x&#41;;    &#125;    void m&#40;&#41;    &#123;        x = 4;    &#125;
A. 0
B. 4
C. Compile time error
D. Undefined
Answer:A
#include &lt;stdio.h&gt;    int x;    void main&#40;&#41;    &#123;        m&#40;&#41;;        printf&#40;&quot;%d&quot;, x&#41;;    &#125;    void m&#40;&#41;    &#123;        x = 4;    &#125;
A. 0 B. 4 C. Compile time error D. Undefined