C# Tuples Quiz – Answertopia

Welcome to the C# Tuples Quiz! In this quiz, you’ll be tested on your understanding of C# tuples, which allow you to group multiple values into a single entity. You’ll explore how to declare, access, and use tuples to pass multiple values in and out of methods. This quiz will challenge your knowledge of tuple syntax, field names, returning tuples from methods, and destructuring tuples into separate variables.

What is a tuple in C#?

A class used to store a list of strings.

A special type of array.

A collection of values combined into a single entity.

A method that returns multiple values of the same type.

None

Which syntax is used to declare a tuple with types specified?

(10, “Item”, 5.5) = tuple;

tuple = new Tuple();

var tuple = {10, “Item”, 5.5};

(int, string, double) tuple = (10, “Item”, 5.5);

None

How can you access the second element in a tuple using dot notation?

tuple.GetItem(2)

tuple.Item2

tuple[1]

tuple.Second

None

How can you declare a tuple without specifying the types explicitly?

myTuple: (10, “Item”, 5.5)

var myTuple = (10, “Item”, 5.5);

myTuple = (10, “Item”, 5.5);

tuple myTuple = {10, “Item”, 5.5};

None

How do you assign field names to the values in a tuple?

(10, “Refrigerator”, 432.43) = {Count, Product, Price};

var tuple = {Count: 10, Product: “Refrigerator”, Price: 432.43};

(int Count, string Product, double Price) tuple = (10, “Refrigerator”, 432.43);

tuple(Count, Product, Price) = (10, “Refrigerator”, 432.43);

None

Which of the following is NOT a correct way to access tuple elements?

myTuple.Item1

myTuple.Count

myTuple.Product

myTuple(0)

None

How do you return a tuple from a method in C#?

Specify the tuple type in the method’s return type and use the return keyword with the tuple.

Use the ref keyword and return multiple variables.

Use the return statement without specifying any type.

Declare the method as a void and return the tuple inside an out parameter.

None

What is the benefit of returning a tuple from a method?

It restricts the return values to integers.

It enables storing only one value in the method return.

It allows the method to return multiple values in a single return statement.

It speeds up the execution of the method.

None

How can you pass a tuple as a parameter to a method?

Declare the tuple type in the method signature and pass the tuple when calling the method.

Use the out keyword to pass each element separately.

Tuples cannot be passed as method parameters.

Only one tuple element can be passed as an argument at a time.

None

10.

How would you destructure a tuple into separate variables?

tuple[0] = count, tuple[1] = product, tuple[2] = price;

int count = myTuple[0]; string product = myTuple[1];

var (count, product, price) = myTuple;

var tuple = (count, product, price);

None

11.

What is one advantage of using named fields in tuples?

Named fields allow tuples to hold only integer values.

Named fields prevent tuples from storing values of different types.

Named fields improve code readability by providing context for the stored values.

Named fields make tuples immutable.

None

12.

What happens if you try to access a tuple element using a field name that hasn't been declared?

A compile-time error will occur.

The element will return a default value.

The tuple will ignore the field and return the first element.

The program will automatically generate a field name.

None

13.

How can you improve the clarity of your code when using tuples?

By avoiding the use of field names.

By declaring the tuple as a constant.

By assigning names to the fields of the tuple.

By using only one element in the tuple.

None

14.

What is the syntax to pass a tuple literal to a method?

methodName[0] = value1;

methodName[{value1, value2, value3}];

methodName((value1, value2, value3));

methodName.var(value1, value2, value3);

None

15.

Which of the following is true about C# tuples?

Tuples can only store a maximum of two values.

Tuples can store values of different data types.

Tuples cannot store string values.

Tuples must store values of the same data type.

None