Assignment description

Implement the following $2$ functions and put your code for $2$ functions in a single file called homework$4.$cpp$.($Note: you can define your own function that are called by these $2$ functions$)$

Also include the following definition of node class in your homework$4.$cpp: class tree$\_$node $\{$ public: int data; tree$\_$node $*$left$,*$right; tree$\_$node$($int d$,$tree$\_$node ${?}^{**}=$ NULL, tree$\_$node ${?}^{**}r=$ NULL$)$ data $=d$; left $=l$; right $\{$:$=r$;$\}$;

Function $1$: int sumleaves$($tree$\_$node ${?}^{***})$; ${?}^{***********}$ This function returns the sum of all leaves of a tree with root $r.$

Function $2$: int depthnegative tree$\_$node ${?}^{***}r)$; ${?}^{**********}$ this function returns the depth of a tree node with value $-1$ in a tree with root $r.$ This tree contains exactly one $-1.$ Your goal is to figure out the depth of the tree node that contains $-1.$