Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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### Understanding the 'this' Pointer in C++ The `this` pointer in C++ is a powerful and commonly used feature within classes. Here are some crucial points where the `this` pointer is accessible: 1. **Within all the member functions of the class** 2. **Only within functions returning void** 3. **Only within non-static functions** 4. **Within the member functions with zero arguments** **Explanation:** - **Point (i)** implies that the `this` pointer is available in every member function of the class. - **Point (ii)** is incorrect because the `this` pointer is not restricted to functions returning void. - **Point (iii)** indicates that the `this` pointer is only available within non-static member functions. - **Point (iv)** is incorrect as the number of arguments a member function accepts does not affect the accessibility of the `this` pointer. In summary, the `this` pointer is a special mechanism used in non-static member functions of a class to point to the object for which the member function is called. Understanding where and how the `this` pointer can be used is pivotal for efficient class design and management in C++.
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Transcribed Image Text:### Understanding the 'this' Pointer in C++ The `this` pointer in C++ is a powerful and commonly used feature within classes. Here are some crucial points where the `this` pointer is accessible: 1. **Within all the member functions of the class** 2. **Only within functions returning void** 3. **Only within non-static functions** 4. **Within the member functions with zero arguments** **Explanation:** - **Point (i)** implies that the `this` pointer is available in every member function of the class. - **Point (ii)** is incorrect because the `this` pointer is not restricted to functions returning void. - **Point (iii)** indicates that the `this` pointer is only available within non-static member functions. - **Point (iv)** is incorrect as the number of arguments a member function accepts does not affect the accessibility of the `this` pointer. In summary, the `this` pointer is a special mechanism used in non-static member functions of a class to point to the object for which the member function is called. Understanding where and how the `this` pointer can be used is pivotal for efficient class design and management in C++.
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