How do I find the size of an array in C++?

How do I find the size of an array in C++?

In C++, you can find the size of a statically allocated array using the sizeof operator. For example, sizeof(array) / sizeof(array[0]) gives you the number of elements.

What if I have a dynamically allocated array?

For dynamically allocated arrays, you need to keep track of the size manually, as sizeof won't work. You should store the size in a separate variable when you allocate the array.

Can you show me an example?

Sure! Here's an example:

int* arr = new int[5];
int size = 5; // Store the size manually
// Use the array...
delete[] arr; // Don't forget to free the memory!