Implement the copy assignment operator= for the StringVar class using the options given on the right side window. Place the code into the left side using the arrows. It is possible to get the test case correct but not complete NOTE: Be careful! There are decoys! The this pointer is used extensively.. Assume that StringVar.h has the following declaration: #include class StringVar { public: StringVar() : max_length(20) { // Default constructor size is 20 value = new char[max_length+1]; value[0] = '\0'; } StringVar(int size); // Takes an int for size StringVar(const char cstr[]); // Takes a c-string and copies it StringVar(const StringVar& strObj); // Copy Constructor ~StringVar(); // Destructor int size() const { return max_length; } // Access capacity const char* c_str() const { return value; } // Access value int length() const { return strlen(value); } // Access length StringVar& operator= (const StringVar& rightObj); std::istream& operator>> (std::istream& in, StringVar& strVar); std::ostream& operator<< (std::ostream& out, const StringVar& strVar); private: int max_length; char* va

Implement the copy assignment operator= for the StringVar class using the options given on the right side window. Place the code into the left side using the arrows. It is possible to get the test case correct but not complete

NOTE: Be careful! There are decoys! The this pointer is used extensively..

Assume that StringVar.h has the following declaration:

#include <iostream>

class StringVar {
public:
StringVar() : max_length(20) { // Default constructor size is 20
value = new char[max_length+1];
value[0] = '\0';
}

StringVar(int size); // Takes an int for size

StringVar(const char cstr[]); // Takes a c-string and copies it

StringVar(const StringVar& strObj); // Copy Constructor

~StringVar(); // Destructor

int size() const { return max_length; } // Access capacity

const char* c_str() const { return value; } // Access value

int length() const { return strlen(value); } // Access length

StringVar& operator= (const StringVar& rightObj);

std::istream& operator>> (std::istream& in, StringVar& strVar);

std::ostream& operator<< (std::ostream& out, const StringVar& strVar);

private:
int max_length;
char* value;
};