CPP225 Object Oriented Programming I Methods

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Questions and Answers

What is the purpose of expression-bodied members in C#?

  • To create local functions within a method
  • To allow methods to return multiple values
  • To enforce strict data type checking
  • To provide a shorter syntax for single-line methods (correct)

In C#, what is the purpose of the 'out' modifier in method parameters?

  • To specify optional parameters
  • To declare static local functions
  • To pass arguments by reference
  • To return multiple values from a method (correct)

What does a static method allow in C#?

  • It can only return void type
  • It can only be called from within the same namespace
  • It can access instance members of a class
  • It can be called directly without creating a class instance (correct)

When would you use the 'ref' modifier in C#?

<p>To pass arguments by reference (C)</p>
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What feature allows you to define a function inside another function?

<p>Local Functions (C)</p>
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In C#, what does 'Method Overloading' refer to?

<p>Defining multiple methods with the same name but different parameters (B)</p>
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What is the purpose of using a local function in a method?

<p>To allow the function to be called only within the method where it is defined (D)</p>
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In object-oriented programming, what can a static local function do?

<p>Change the values of variables from the main function directly (C)</p>
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What is the benefit of adding the static modifier to a local function?

<p>Prevents the local function from accessing the main method variables directly (A)</p>
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How are value types passed into a function by default?

<p>By value (A)</p>
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What happens to the original variables when a value type parameter is passed into a method?

<p>A copy of the data is passed into the function and any modifications do not affect the original variables (B)</p>
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What is the purpose of using the 'out' modifier for method parameters?

<p>To indicate that parameters must be assigned to a value before exiting the method scope (C)</p>
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In which scenario does a local function prove advantageous over creating another method?

<p>When the function is only needed within a specific method (B)</p>
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What does a static local function prevent from happening?

<p>Accessing the main method variables directly (B)</p>
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How does a local function differ from a regular method?

<p>It can only be called within the method where it is defined (B)</p>
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What happens to the original variables when a reference type parameter is passed into a method?

<p>They are passed by reference, and any modifications affect the original variables. (B)</p>
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