Mastering Conditional Statements in C#

What is the basic syntax of an if statement in C#?

• if (condition) // code to execute

• if (condition) { // code to execute }

• if condition { // code to execute }

• if { condition } // code to execute

How does an if-else statement differ from a simple if statement?

• A simple if statement can handle multiple conditions at once.

• An if-else statement includes an alternative action for when the condition is false, while a simple if statement does not.

• An if-else statement is always more efficient than a simple if statement.

• An if-else statement can only be used in loops.

What is a nested if statement and when would you use it?

• A nested if statement is a type of function that returns a value.

• A nested if statement is used to create loops in programming.

• A nested if statement can only check one condition at a time.

• A nested if statement is used to check multiple conditions in a hierarchical manner.

Explain the switch statement and its advantages over if-else chains.

• A switch statement can only evaluate boolean expressions.

• If-else chains are always faster than switch statements.

• Switch statements cannot handle multiple cases for the same value.

• A switch statement is a control structure that allows multi-way branching based on the value of an expression, offering advantages like improved readability, potential performance benefits, and easier maintenance compared to if-else chains.

What will be the output of the following code: if (x > 10) { Console.WriteLine("Greater"); }?

• Equal

• Greater

• Not Greater

• Less

How do you handle multiple conditions in a switch statement?

• Only use case 'value1' for handling conditions.

• Use if-else statements for all conditions.

• Switch statements cannot handle multiple conditions.

• Use case 'value1', case 'value2': to group multiple conditions.

What is the purpose of the default case in a switch statement?

• To terminate the switch statement early.

• To execute multiple cases at once.

• To provide a fallback action when no case matches.

• To define a variable within the switch.

Can you use a switch statement with strings in C#? Provide an example.

• You cannot use a switch statement with strings in C#.

• Switch statements only work with integers in C#.

• Example: string fruit = "apple"; switch (fruit) { case "apple": Console.WriteLine("This is an apple."); break; case "banana": Console.WriteLine("This is a banana."); break; default: Console.WriteLine("Unknown fruit."); }

• C# does not support switch statements at all.

What happens if no case matches in a switch statement?

• The default case executes if present; otherwise, nothing happens.

• The first case will execute by default.

• The program will terminate immediately.

• The switch statement will throw an error.

How can you use logical operators in an if statement?

• You can only use arithmetic operators in an if statement.

• Logical operators are not applicable in if statements.

• You must use logical operators in a switch statement instead.

• You can use logical operators like '&&', '||', and '!' in an if statement to combine conditions.