$10$ Study the following code segment carefully and answer the questions below.

a$.$ Create a default constructor for class X$.$ Initialize all values as $0.$

b$.$ Create a copy constructor for class X$.$

c$.$ Create a type conversion constructor taking a parameter, int a$,$ and sets $\_$a as

the value of a and $b$ as $0.$

d$.$ Both $T22$ and $T3$ get a copy of values of $T1.$ State whether copy constructor and$/$or

assignment operator were invoked for $T2$ and $T3$ during copying values of $T1.$

e$.$ Print the outputs $($if any$)$ of the code segment.