Category OOP Python CSharp CPlusPlus Mobile DS

Question Max 100 characters

Answer Max 250 characters A nullable type allows value types to hold null values. It's used with '?' (e.g., int? x = null) to represent an undefined or absent value.

Difficulty Level Enter 1 for Easy, 2 for Medium, or 3 for Hard.

Open Count Enter 0 to reset or the current count