kt Quiz

What does kt stand for in Kotlin?

• Kangaroo Tonic

• Kotlin

• Ketchup Tomato

• Kite Tail

What is the main purpose of using kt in Kotlin?

• To define Kotlin source files

• To create Java source files

• To declare C++ source files

• To define Swift source files

What is the syntax for declaring a variable in Kotlin using kt?

• var variableName: Type = value

• let variableName: Type = value

• val variableName: Type = value

• const variableName: Type = value

What is the difference between val and var in Kotlin when using kt?

• val and var are interchangeable in Kotlin

• val is for read-only variables and var is for mutable variables

• val is for mutable variables and var is for read-only variables

• val is for integers and var is for strings

How do you define a function in Kotlin using kt?

• def functionName(parameters): ReturnType

• fun functionName(parameters): ReturnType

• funct functionName(parameters): ReturnType

• functionName(parameters): ReturnType

What is the use of kt in Kotlin for loops?

• To print the value of kt

• To perform mathematical calculations

• To iterate through a collection or a range

• To skip the iteration

Explain the concept of nullable types in Kotlin using kt.

• Nullable types in Kotlin allow variables to hold a null value.

• Nullable types in Kotlin only allow variables to hold non-null values.

• Nullable types in Kotlin are not supported in kt files.

• Nullable types in Kotlin can only be used with integers.

What is the purpose of the 'when' expression in Kotlin using kt?

• To perform mathematical calculations

• To create loops

• To define classes and objects

• To provide a concise and readable way to handle multiple branches of conditions.

How do you create a class in Kotlin using kt?

• Create a new .java file and define the class using the 'class' keyword.

• Create a new .kt file and define the class using the 'function' keyword.

• Create a new .kt file and define the class using the 'interface' keyword.

• Create a new .kt file and define the class using the 'class' keyword.

Explain the concept of extension functions in Kotlin using kt.

• Extension functions in Kotlin are used to remove existing functions from classes

• Extension functions in Kotlin are only applicable to new classes and cannot be added to existing ones

• Extension functions in Kotlin allow you to add new functions to existing classes without inheriting from them.

• Extension functions in Kotlin can only be used with classes that have been explicitly designed for extension