struct vs class (real-world)?

struct vs class (real-world)

What interviewers test

• Memory & performance awareness

Use struct when:

• Small
• Immutable
• Value-type behavior

public readonly struct Point
{
public int X { get; }
public int Y { get; }
}

Use class when:

• Large
• Mutable
• Shared references

public class User
{
public string Name { get; set; }
}
Interview statement

“Structs live on stack or inline, classes live on heap with GC cost.”