C# Programming Challenge

What are the basic data types available in C#?

• byte, short, long, array

• integer, decimal, character, boolean

• text, number, symbol, list

• int, float, double, char, bool, string, object

Explain the purpose of 'if' and 'switch' statements in C#.

• The 'if' statement is only for error handling, and the 'switch' statement is for input validation.

• The 'if' statement is used for looping through arrays, while the 'switch' statement is for defining functions.

• The 'if' statement executes code based on a condition, while the 'switch' statement selects code to execute based on the value of a variable.

• Both 'if' and 'switch' statements are used to declare variables in C#.

What is the difference between a class and an object in C#?

• A class can only contain methods; an object can only contain data.

• A class is a blueprint for creating objects; an object is an instance of a class.

• A class is an instance of an object; an object is a blueprint for classes.

• A class is a type of object; an object is a collection of classes.

Define recursion and provide an example in C#.

• Recursion is a technique for managing memory allocation in C#.

• Here is an example of a recursive function in C# that calculates the factorial of a number: int Factorial(int n) { if (n <= 1) return 1; // Base case return n * Factorial(n - 1); // Recursive case }

• A recursive function in C# is one that uses loops instead of calls.

• Recursion is a method of sorting arrays in C#.

What is a loop and what types of loops are available in C#?

• for each, until, repeat until

• loop, cycle, traverse

• Types of loops in C#: for, foreach, while, do while.

• repeat, iterate, loop through

How do you declare an array in C#?

• myArray: int[];

• int[] myArray;

• int myArray[];

• array myArray int[];

What is the significance of constructors in object-oriented programming?

• Constructors can be used to create static methods.

• Constructors are only necessary for abstract classes.

• Constructors are significant because they initialize objects and ensure they are in a valid state upon creation.

• Constructors are used to delete objects after they are created.

Describe the 'for' loop syntax in C#.

• for (int i = 0; i < 10; i--) { // code to execute }

• for (int i = 0; i < 10; i += 2) { // code to execute }

• for (i = 0; i < 10; i++) { // code to execute }

• for (int i = 0; i < 10; i++) { // code to execute }

What is method overloading in C#?

• Method overloading is the ability to define multiple methods with the same name but different parameter lists in C#.

• Method overloading is a feature that enables the use of inheritance in C#.

• Method overloading allows methods to have the same parameters but different return types.

• Method overloading is the ability to create methods with different names.

Explain how recursion can be used to solve problems with examples.

• Recursion can only be applied to tree structures.

• Recursion can solve problems by breaking them into smaller subproblems, as seen in calculating factorials and Fibonacci numbers.

• Recursion is only useful for sorting algorithms.

• Recursion eliminates the need for loops in all programming languages.