#include &lt;stdio.h&gt;    int main&#40;&#41;    &#123;        char a = '\012';&nbsp;        printf&#40;&quot;%d&quot;, a&#41;;        return 0;    &#125;
A. Compiler error
B. 12
C. 10
D. Empty
Answer:A
#include &lt;stdio.h&gt;    int main&#40;&#41;    &#123;        char a = '\012';&nbsp;        printf&#40;&quot;%d&quot;, a&#41;;        return 0;    &#125;
A. Compiler error B. 12 C. 10 D. Empty
Explanation: The value ‘\012’ means the character with value 12 in octal, which is decimal 10. 7. In C++, what is the sign of character data type by default?