Initialize Array of objects with parameterized constructors in C++

When a class is defined, only the specification for the object is specified; no memory or capacity is allocated. You need to build objects to use the data and access functions specified in the class.

Syntax:

Specific methods for initializing the Parameterized Constructors list of objects:

Using malloc(): Use malloc() method to avoid calling a non-parameterized constructor. The “Malloc” or “Memory Allocation” method in C++ is used to dynamically allocate the specified size of a single large block of memory. It returns a sort void pointer that can be thrown into a pointer of any kind.

Output:

Initialize Array of objects with parameterized constructors in C++

Using Double pointer: The pointer to a pointer is a set of complex indirect or a pointer chain. A pointer typically holds the address of a variable. When we describe a pointer to a pointer, the first pointer contains the second pointer ‘s address, which points to the location containing the real value, as shown below. Now we can allocate a number of blocks to be assigned, so we have to call the parameterized constructor to initialize for each index using the new keyword.

Output:

Initialize Array of objects with parameterized constructors in C++

Using a new keyword: On the Heap, the new operator denotes a memory allocation request. If there is enough memory, the new operator identifies the memory and returns the newly allocated and configured memory address to the variable name. Here, point-variable is the information-type pointer. Data type could be any type of built-in data along with an array or any type of user-defined data such as structure and class.

If we add a parameterized constructor, a new keyword requires a non-parameterized constructor for dynamic initialization. So we’re going to use a dummy constructor for that.

Output:

Initialize Array of objects with parameterized constructors in C++

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