📝 free_arr

This function frees all the memory allocated for a 2D array of strings, including the individual strings and the array itself.

⚙️ Parameters

Parameter	Type	Description
arr	char**	A pointer to the array of strings (array of char pointers).

🔁 Returns

Return value	Description
void	This function does not return a value. It frees memory.

📖 Description

The free_arr function is used to release the memory occupied by a 2D array of strings. It frees the memory for each string in the array and then frees the memory for the array itself.

• The function starts by checking if the array is NULL. If it is, it returns immediately without doing anything.
• It loops through the array, freeing each string and setting the pointer to NULL to avoid dangling pointers.
• After freeing all individual strings, it frees the array itself and sets the pointer to NULL.

Note: This function does not check for double freeing. Ensure that the array and strings are allocated properly before calling this function.

💡 Example Usage

char *arr[] = {"Hello", "world", "42", NULL}; // Example array of strings
int height = 3; // Number of strings

free_arr(arr); // Frees the memory occupied by the array and strings

// After calling free_arr, arr and each element of arr are set to NULL