void function$($int y ptr$)\{$y ptr $=10$;delete y ptr;int y$2$ ptr $=$ new int $(15)$;return ; $\}$int main$()\{$int main ptr $=$ new int $(12)$; function$($main ptr$)$;return $0$ ; $\}1.$ Explain the difference between stack memory and heap memory$[$Total Marks $15]2.$ Refer to the code listing above and identify when the memory for each of the following pointers and their pointees is released y ptr y$2$ ptr main ptr