/* first of all , run code and observe for any improvement scope. read improvement on this code from https://www.sololearn.com/Discuss/2770998/?ref=app thanks to members xxx and shadow once improved code is ready, try below: change return type of operator = to void and un comment s4 declaration code will work fine but s4 = s2 = s1 to work in single line , code must have return type of overloaded assignment operator as class object reference */ #include #include using namespace std; class Student { public: Student(); Student(char* ichrName,char* ichrLastName); Student(const Student& obj); Student& operator=(const Student& obj); ~Student(); void display(); private: char* m_chrName; char* m_chrLastName; }; Student::Student() { Student((char*)"A",(char*)"B"); } Student::Student(char* ichrName,char* ichrLastName) { int intLenName = strlen(ichrName); m_chrName = new char[intLenName]; strcpy(m_chrName,ichrName); int intLenLastName = strlen(ichrLastName); m_chrLastName = new char[intLenLastName]; strcpy(m_chrLastName,ichrLastName); } Student::Student(const Student& obj) { int intLenName = strlen(obj.m_chrName); m_chrName = new char[intLenName]; strcpy(m_chrName,obj.m_chrName); int intLenLastName = strlen(obj.m_chrLastName); m_chrLastName = new char[intLenLastName]; strcpy(m_chrLastName,obj.m_chrLastName); } Student& Student::operator=(const Student& obj) { if(this!=&obj) { delete m_chrName; int intLenName = strlen(obj.m_chrName); m_chrName = new char[intLenName]; strcpy(m_chrName,obj.m_chrName); delete m_chrLastName; int intLenLastName = strlen(obj.m_chrLastName); m_chrLastName = new char[intLenLastName]; strcpy(m_chrLastName,obj.m_chrLastName); } return *this; } Student::~Student() { cout << "deleting " << m_chrName << " " << m_chrLastName << endl; delete m_chrName; delete m_chrLastName; } void Student::display() { cout << "Hello " << m_chrName << " " << m_chrLastName << endl; } int main() { Student s1((char*)"Ketan",(char*)"Lalcheta"); s1.display(); Student s2((char*)"Ket",(char*)"Lal"); s2.display(); cout << " Two objects allocated " << endl; Student s3(s1); s3.display(); cout << " Copy constructor " << endl; //Student s4; s2 = s1; s2.display(); cout << " Assignment " << endl; return 0; }

copyAndAssignment