1.  (30)  Implement all the functions in the following class.  Add any private
functions you might need.

class MyString
{
  private:
    char *s;
    int len;
  public:
    MyString();              // Initialize to empty string
    MyString(char *str);     // Initialize our string to be the same as str
    ~MyString();             // Deallocate our string
    int getLength();         // Return the length of the string
    void strcpy(char *str);  // Make our string the same as str
    void strcat(char *str);  // Concatenate str to our string
    bool strcmp(char *str);  // Return true if our string and str are the same
    void reverse();          // Reverse our string
}