AFD 200 Flutter Certified Application
Developer Exam
Question 1. Which keyword is used to declare a constant variable at
compile time in Dart?
A) let
B) final
C) const
D) static
Answer: C
Explanation: The `const` keyword is used to declare compile-time
constants in Dart, ensuring the value is determined at compile time.
Question 2. What is the default value of an uninitialized variable of type
`int` in Dart?
A) 0
B) null
C) -1
D) Undefined
Answer: B
Explanation: In Dart, uninitialized variables have a default value of `null`
because Dart variables are nullable by default.
