Chapter 13: Problem 54

\(\mathrm{T}\) \(\mathrm{F} \quad\) Classes and structures in \(\mathrm{C}_{++}+\) are very similar.

Short Answer

Expert verified

Answer: The main difference between classes and structures in C++ is the default access level for their members. In a class, the default access level is "private," while in a structure, it is "public."

Step by step solution

Introduction

C++ is an object-oriented programming language that supports both classes and structures, which are used to create complex and flexible data types. The statement claims that classes and structures in C++ are very similar.

Similarity 1: Syntax

Classes and structures have very similar syntax in C++. Both use the following general format: ``` classname/structname identifier { // member_variables_and_functions }; ``` For example, you can create a class or structure named "Student" with the same syntax, just changing the keyword "class" to "struct": ```cpp class Student { // member_variables_and_functions }; struct Student { // member_variables_and_functions }; ```

Similarity 2: Members

Both classes and structures can contain member variables and member functions (methods). These members can be of any type, including basic data types (int, float, char, etc.), user-defined data types, pointers, references, or instances of other classes or structures.

Similarity 3: Access Modifiers

Classes and structures both support three access modifiers: public, private, and protected. These modifiers determine the level of access and visibility of the members of a class or structure.

Similarity 4: Constructors and Destructors

Both classes and structures can have constructors and destructors, which are special member functions that are called when an object is created (constructed) or destroyed (destructed).

Similarity 5: Inheritance

Classes and structures can inherit from other classes or structures. This allows you to reuse code and create more flexible and modular programs.

Main Difference

The main difference between classes and structures in C++ is the default access level for their members. In a class, the default access level is "private," while in a structure, it is "public." This means that if you do not explicitly specify an access modifier for a member in a class, it will be private by default. However, if you do not specify an access modifier for a member in a structure, it will be public by default. In conclusion, classes and structures in C++ are very similar, sharing many features such as syntax, member variables and functions, access modifiers, constructors and destructors, and inheritance. The main difference between them is the default access level for their members.

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\(\mathrm{T}\) \(\mathrm{F} \quad\) Classes and structures in \(\mathrm{C}_{++}+\) are very similar.

Short Answer

Step by step solution

Introduction

Similarity 1: Syntax

Similarity 2: Members

Similarity 3: Access Modifiers

Similarity 4: Constructors and Destructors

Similarity 5: Inheritance

Main Difference

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