Function with parameters in swift playground - 1

What is a parameter in a Swift function?

• A variable that holds the return value of the function

• A variable that holds the input value passed to the function

• A keyword that defines the type of the function

• A keyword that defines the scope of the function

Which of the following is a valid function definition in Swift that takes two parameters and returns their sum?

• func addNumbers() -> Int { return a + b }

• func addNumbers(a: Int, b: Int) -> Int { return a + b }

• func addNumbers(Int, Int) -> Int { return a + b }

• func addNumbers(a, b) -> Int { return a + b }

What is the purpose of using parameters in a Swift function?

• To define the return type of the function

• To specify the scope of the function

• To provide input values to the function

• To define the name of the function

What is the syntax for defining a function with a parameter in Swift?

• func functionName { parameterName: ParameterType } { /* function body / }

• func functionName(parameterName: ParameterType) { / function body / }

• func functionName(ParameterType parameterName) { / function body / }

• func functionName() -> ParameterType { / function body */ }

How can you call a function with a parameter in Swift?

• By passing the parameter value in square brackets []

• By passing the parameter value in parentheses ()

• By passing the parameter value in curly braces {}

• By passing the parameter value in angle brackets <>

What is the purpose of the return keyword in a function with parameters?

• To specify the data type of the parameter

• To exit the function early without returning a value

• To indicate the starting point of the function

• To return a value from the function

What happens if a function with parameters is called without passing any arguments?

• The function returns a default value

• The function returns an error message

• The function uses default values for the parameters

• The function throws an exception

What is the difference between a parameter and an argument in Swift?

• There is no difference between a parameter and an argument

• A parameter is a value passed to a function, while an argument is a value received by a function

• A parameter is a value received by a function, while an argument is a value passed to a function

• A parameter is used for output values, while an argument is used for input values

What is the difference between a parameter and an argument in Swift?

• There is no difference between a parameter and an argument

• A parameter is a value passed to a function, while an argument is a value received by a function

• A parameter is a value received by a function, while an argument is a value passed to a function

• A parameter is used for output values, while an argument is used for input values

How can you define a default value for a function parameter in Swift?

• By using the keyword default before the parameter value

• By using the keyword optional before the parameter name

• By assigning a value to the parameter in the function definition

• By using the keyword required before the parameter name