#include &lt;iostream&gt;    #include &lt;complex&gt;    using namespace std;    int main&#40;&#41;    &#123;        complex&lt;double&gt; c1&#40;4.0, 3.0&#41;;        complex&lt;float&gt; c2&#40;polar&#40;5.0, 0.75&#41;&#41;;        cout  &lt;&lt; &#40;c1 += sqrt&#40;c1&#41;&#41; &lt;&lt; endl;        return 0;    &#125;
A. (4.0, 3.0)
B. (6.12132, 3.70711)
C. (5.0, 0.75)
D. None of the mentioned
Answer:A
#include &lt;iostream&gt;    #include &lt;complex&gt;    using namespace std;    int main&#40;&#41;    &#123;        complex&lt;double&gt; c1&#40;4.0, 3.0&#41;;        complex&lt;float&gt; c2&#40;polar&#40;5.0, 0.75&#41;&#41;;        cout  &lt;&lt; &#40;c1 += sqrt&#40;c1&#41;&#41; &lt;&lt; endl;        return 0;    &#125;
A. (4.0, 3.0) B. (6.12132, 3.70711) C. (5.0, 0.75) D. None of the mentioned
Explanation:In this program, we are adding both complex number and finding the square root of it.