create a circular linked list based c++ program which will be contact managment system. there will be class linked list with pointers. there is class of node which contain string name and int data....

create a circular linked list based c++ program which will be contact managment system. there will be class linked list with pointers. there is class of node which contain string name and int data. program should have functions insert at head, insert at tail, insert at position, search, delete,update and list