C++ homework help

Blister.h // do not change #ifndef BLISTER_H #define BLISTER_H #include  struct Bode { const char base; Bode *next; public: Bode(char B) : base(B), next(nullptr) { } }; class Blister { private: Bode * start; public: Blister(std::string init); ~Blister( ); friend std::ostream & operator 
 
 
 
 
// TestBlister.cpp // adapt as desired #include  using namespace std; #include "Blister.h" int main( ) { Blister X("ABCDE"); Blister Y("ACDE"); Blister Z("ABODE"); cout  
 
  Lab 4: Linked Lists A base-sequence such as DNA can be thought of a sequence of letters. Create a class Blister that is a linked-list implementation of a structure that stores and compares base-sequences. It should implement the header file Blister.h provided, without alteration. Bases are stored as upper-case characters. It should use a singly-linked linked list without a dummy node, with all operations running in linear time. The operations are:  The constructor takes a string and creates a linked list with those characters in order (first char in first node).  The destructor should free up new'ed memory.  The stream insertion operator should output the sequence.  The length member function returns the number of bases in the sequence.  The isSubstitution of member function compares two base-sequences and returns true if they have the same length and differ in exactly one base.  The islnsertion Of member function compares two base-sequences and returns true if the one it is called on can be obtained by adding exactly one base to the other base-sequence. For example, MADAM is an insertion-of MAAM as well as an insertion-of ADAM. A driver is provided to help with testing. Edit as desired. Do not add a main to Blister.cpp. Submit via handin just the one file Blister.cpp.  Lab 4: Linked Lists A base-sequence such as DNA can be thought of a sequence of letters. Create a class Blister that is a linked-list implementation of a structure that stores and compares base-sequences. It should implement the header file Blister.h provided, without alteration. Bases are stored as upper-case characters. It should use a singly-linked linked list without a dummy node, with all operations running in linear time. The operations are:  The constructor takes a string and creates a linked list with those characters in order (first char in first node).  The destructor should free up new'ed memory.  The stream insertion operator should output the sequence.  The length member function returns the number of bases in the sequence.  The isSubstitution of member function compares two base-sequences and returns true if they have the same length and differ in exactly one base.  The islnsertion Of member function compares two base-sequences and returns true if the one it is called on can be obtained by adding exactly one base to the other base-sequence. For example, MADAM is an insertion-of MAAM as well as an insertion-of ADAM. A driver is provided to help with testing. Edit as desired. Do not add a main to Blister.cpp. Submit via handin just the one file Blister.cpp