How Do I Determine the Size of My Array in C?

In C, you can determine the size of an array by using the sizeof operator. To calculate the number of elements in a statically declared array, you divide the total size of the array by the size of one element. Here’s an example:

In this code, sizeof(arr) gives the total byte size of the array, while sizeof(arr[0]) gives the size of one element. The result is the number of elements in the array.