C++ Program

(Implementing the string class) The string class is provided in the C++ library. Provide your own implementation for the following functions (name the new class MyString):

MyString(const char ch, int size);

MyString(const char chars[], int size);

MyString append(const MyString& s);

MyString append(const MyString& s, int index, int n);

MyString append(int n, char ch);

MyString assign(const char* chars);

MyString assign(const MyString& s, int index, int n);

MyString assign(const MyString& s, int n);

MyString assign(int n, char ch);

MyString substr(int index, int n) const;

MyString substr(int index) const;

MyString erase(int index, int n);