Dynamic arrays in C++ provide a flexible way to allocate memory at runtime. Unlike static arrays, the size of dynamic arrays can be determined during program execution. In this blog post, we will explore how to use dynamic arrays in C++.

Initializing Dynamic Arrays

To initialize a dynamic array, we can use the new keyword followed by the data type and the desired size in square brackets. For example, to create a dynamic array of integers with a size of 10, we can use the following code:

int* dynamicArray = new int[10];

Accessing Dynamic Array Elements

To access individual elements of a dynamic array, we can use the array indexing syntax with the name of the dynamic array variable. For example, to access the first element of the dynamicArray, we can use:

int firstElement = dynamicArray[0];

Modifying Dynamic Array Elements

Similarly to accessing elements, we can modify dynamic array elements by assigning new values using the array indexing syntax. For example, to change the value of the second element of dynamicArray, we can use:

dynamicArray[1] = 5;

Deleting Dynamic Arrays

Once we are done using a dynamic array, it is important to free the allocated memory to avoid memory leaks. To delete a dynamic array, we use the delete[] keyword followed by the name of the dynamic array variable. For example, to delete the dynamicArray created earlier, we can use:

delete[] dynamicArray;

Working with Dynamic Arrays

Dynamic arrays are particularly useful when the required array size is not known at compile-time. They offer flexibility in allocating and manipulating memory at runtime. However, it is important to handle dynamic arrays carefully to avoid memory leaks or accessing elements beyond the allocated memory range.

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