using c language

Implement an Abstract Data Type Polynomial having single variable, implemented using Singly Linked List having following functions with the given prototype: 1. void initPolynomial (Polynomial *P, char *s, int n); The function creates a polynomial P from the given string s of length n. 2. Polynomial * addPolynomial (Polynomial Pi, Polynomial P2); The function adds two polynomials P1 and P2 and returns a pointer of type Polynomial. 3. void displayPolynomial (Polynomial P, char var); The function displays the polynomial in a well formatted form