TAILIEUCHUNG - Lecture Object oriented programming - Lecture no 22

After you have read and studied this chapter, you should be able to: Include a JFileChooser object in your program to let the user specify a file; write bytes to a file and read them back from the file, using FileOutputStream and FileInputStream; write values of primitive data types to a file and read them back from the file, using DataOutputStream and DataInputStream;. | CSC241: Object Oriented Programming Lecture No 22 Previous Lecture Friend function example program: Distance class Friend function for functional notation Friend classes static functions Assignment operator and copy initialization Today’s Lecture Example program Copy initialization Assignment operator overloaded Memory efficient string class Dynamic Type Information The Copy Constructor Distance d2 = d1; It is similar to what assignment operator (d2 = d1) does The difference is that copy initialization also creates a new object 7 feet inches d1 feet inches d2 7 Example program – assignment and copy constructor class alpha { private: int data; public: alpha() { } alpha(int d) { data = d; } alpha(alpha& a) { data = ; cout << “\nCopy constructor invoked”; } void display() { cout << data; } void operator = (alpha& a) { data = ; cout << “\nAssignment operator invoked”; } }; a2 = a1; alpha a3(a1); Program Output Assignment operator invoked Copy constructor invoked When .

• Kỹ thuật lập trình
• Object oriented programming
• Programming languages
• Lecture Object oriented programming
• Lập trình hướng đối tượng
• Object oriented programming with Java
• C++ programming
• Object oriented programming in C++
• Object oriented programming language
• Software object