#include &lt;iostream&gt;    using namespace std;    int func&#40;int m = 10, int n&#41;    &#123;        int c;        c = m + n;        return c;    &#125;    int main&#40;&#41;    &#123;        cout &lt;&lt; func&#40;5&#41;;        return 0;    &#125;
A. 15
B. 10
C. compile time error
D. none of the mentioned
Answer:A
#include &lt;iostream&gt;    using namespace std;    int func&#40;int m = 10, int n&#41;    &#123;        int c;        c = m + n;        return c;    &#125;    int main&#40;&#41;    &#123;        cout &lt;&lt; func&#40;5&#41;;        return 0;    &#125;
A. 15 B. 10 C. compile time error D. none of the mentioned
Explanation:We can’t use the user argument infront of the default argument. Sanfoundry Global Education & Learning Series – C++ Programming Language.