0
What is an array of class objects.how the array of class of class objects is defined in c plus plus?
Wiki User
∙ 12y ago
An array of class objects is just a set of class objects arranged linearly in memory. It is no different than an array of elementary objects. You define it the same way.
class myClass { ... };
myClass arrayOfMyClass[100]; // creates 100 objects and fires the constructor 100 times
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is class in DBMS?
class in dbms is nothing but a collection of attributes.... class in java is defined as collection of objects....:D
What is difference between array and class?
An array stores a list of values, usually of the same type. Values are distinguished by a subscript. A class usually doesn't store objects, but it defines a template for objects. Objects based on this class store data, which can be of different types, and are distinguished by name (similar to variables). A class thus defines a new, composite, data type (so does an array, but in a more limited way). Besides, a class can also define functions (usually called "methods"), specifically for objects of that type. Usage example: If you want to sort 100 numbers, or do some other work with them, you might store them in an array of numbers (integers, or floating-point numbers, depending on your needs). If, on the other hand, you want to store information about a person, you might create a class, where you define that a "person" includes information about a first name, last name, birthdate, etc.
Could array may have elements that are numbers and strings?
In Java:Not as primitives; but I believe you could create an array of Objects, and then initialize the elemnets as subtypes of the Object class, i.e., any class. I don't think this would be very practical (in Java); if (for example) you need to store information about people's names with their ages, create a class called "Person" that has those two attributes, then create an array of Persons.In Java:Not as primitives; but I believe you could create an array of Objects, and then initialize the elemnets as subtypes of the Object class, i.e., any class. I don't think this would be very practical (in Java); if (for example) you need to store information about people's names with their ages, create a class called "Person" that has those two attributes, then create an array of Persons.In Java:Not as primitives; but I believe you could create an array of Objects, and then initialize the elemnets as subtypes of the Object class, i.e., any class. I don't think this would be very practical (in Java); if (for example) you need to store information about people's names with their ages, create a class called "Person" that has those two attributes, then create an array of Persons.In Java:Not as primitives; but I believe you could create an array of Objects, and then initialize the elemnets as subtypes of the Object class, i.e., any class. I don't think this would be very practical (in Java); if (for example) you need to store information about people's names with their ages, create a class called "Person" that has those two attributes, then create an array of Persons.
What object in c plus plus?
An object is an instance of a class. A class is a user-defined data type from which we can instantiate objects of that class. We often use the terms object and variable interchangeably, however the term variable specifically refers to a named object (objects instantiated at compile time), as opposed to anonymous objects (instantiated at runtime). Built-in data types such as int, double and pointer types are not classes, thus instances of these types are simply known as variables. Built-in types are also part of the language (hence they are built-in) thus we don't need to include a header or a type definition in order to use them; they are immediately available. But to use an object we must first define its class or include the appropriate header that defines the class.
Write a program to show array within class in c?
class is defined in c++ my dear so in C there is no structure of class.for c++ class private { int x[10],y; cout
Why is an array called a derived data type?
An array is not a derived data type at all. In order to be derived there has to be a base class and an array has no base class. Here is the basic declaration of the std::array template class from the <array> header file: template<class _Ty, size_t _Size> class array { // fixed size array of values // ... }; A vector, on the other hand, is derived (from the <vector> header file): template<class _Ty, class _Alloc = allocator<_Ty>> class vector : public _Vector_alloc<!is_empty<_Alloc>::value, _Vec_base_types<_Ty, _Alloc>> { // varying size array of values // ... };
What are methods and how are these related to an object?
Methods are functions defined for a class. Therefore they are accessible for all objects based on the class (depending on visibility; for example in Java: if they are public).
What is the size of an empty class?
1 byte. An empty class cannot be zero bytes otherwise it would be impossible to create an array of empty class objects, thus a dummy member is used to give it the minimum addressable size.
How objects are predefind types?
An object is created from a class, like a house made from a blueprint. The object will therefore be of the type of its class. For instance, a String object will be of type String, which is defined by the String class.
Explain the Java class Loader architecture?
basic function of class loader is to read bytecodes into array and create namespace in namespace. there are two types of class loaders: promodia class loader and class loader objects 1. promodia class loader it loads all necessary classes required for VM, it is bootstrap class loader. 2. class loader objects there are 3 class loaders AppletClassLoader, RemoteClassLoader and SecurityClassloader. Sabarish R L
How do you handle object array?
Exactly as you would any other type of array. An object's size is determined in the same way a structure's size is determined, by the sum total size of its member variables, plus any padding incurred by alignment. However, you cannot create arrays of base classes. Arrays of objects can only be created when the class of object is final; a class that has a private default constructor, otherwise known as a "leaf" class. This is because derived classes can vary in size; array elements must all be the same size. To create an array of base classes you must create an array of pointers to those base classes instead. Pointers are always the same size (4 bytes on a 32-bit system). Static arrays are ideally suited to arrays of leaf objects where the number of objects never changes, or the maximum number of objects is finite and fixed. Although you can use dynamic arrays of leaf objects, you will incur a performance penalty every time the array needs to be resized, because every object's copy constructor must be called during the reallocation. Dynamic arrays are better suited to arrays of pointers to objects -- only the pointers need to be copied during resizing, not the objects they point to.
How can you store Class properties in Array in c?
Yes, you can create array that will store class properties. But all of them have to be of the same type.
