Back-End Programming Exam > Back-End Programming Videos > Learn to Program with C++: Beginner to Expert > C++ Programming Tutorials - Introduction to Classes and Objects
C++ Programming Tutorials - Introduction to Classes and Objects Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
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73 videos|7 docs|23 tests
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FAQs on C++ Programming Tutorials - Introduction to Classes and Objects Video Lecture - Learn to Program with C++: Beginner to Expert - Back-End Programming
| 1. What is the difference between a class and an object? |  |
Ans. A class is a blueprint or a template for creating objects. It defines the properties and behaviors that an object can have. On the other hand, an object is an instance of a class. It is a concrete entity that can hold data and perform actions based on the defined class.
| 2. How do you create an object in C++? | |
Ans. To create an object in C++, you need to declare a variable of the class type. The variable declaration is similar to any other variable declaration, but it includes the class name followed by the object name. For example, if you have a class named "Car", you can create an object of the class using the statement "Car myCar;". This creates an object named "myCar" of the class "Car".
| 3. Can a class have multiple objects? | |
Ans. Yes, a class can have multiple objects. Each object created from the same class will have its own set of data members and member functions. These objects can be used independently and can have different values for their data members.
| 4. What is the role of a constructor in a class? | |
Ans. A constructor is a special member function of a class that is automatically called when an object of the class is created. It is used to initialize the data members of the object. The constructor has the same name as the class and does not have a return type. It can be used to set default values for the data members or accept parameters to initialize the object.
| 5. How do you access the data members and member functions of an object? | |
Ans. To access the data members and member functions of an object, you use the dot (.) operator. The dot operator is used to connect the object name with the data member or member function name. For example, if you have an object named "myCar" and a data member named "color", you can access it using the statement "myCar.color". Similarly, if you have a member function named "startEngine", you can call it using the statement "myCar.startEngine()".
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Nov 22, 2024 Last updated |
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