16 Questions
What is the main purpose of System.ValueType in C#?
To ensure that the derived type is allocated on the stack
What is the main advantage of stack-allocated data in C#?
It can be created and destroyed quickly
What happens to a structure variable when it falls out of the defining scope in C#?
It is removed from memory immediately
How are value types handled when assigned to each other in C#?
The field data is copied member by member
What is the primary member to copy when assigning one simple data type such as System.Int32 to another in C#?
The numerical value
What ensures that heap-allocated data has a lifetime determined by a large number of factors in C#?
.NET garbage collector
What happens when the value of p1.X is changed in the Point example?
The value of p2.X remains unaffected
In the PointRef example, why does changing the value of p3.X also affect p4.X?
Because p3 and p4 point to the same object on the heap
What is the purpose of the ShapeInfo class?
To maintain an informational string for PointRef instances
What will be the output when both p1 and p2 are displayed in the Point example?
X = 10, Y = 10 for both p1 and p2
Why does changing the value of p3.X also affect p4.X in the PointRef example?
p3 and p4 point to the same object on the heap
What is the major difference between value types and reference types?
Value types store data on the stack, while reference types store data on the heap
In which scenario are two copies of a type created on the stack?
When using a struct to create variables
What happens when a reference type is assigned to another?
The reference variable points to what the other reference variable points to in memory
When is a custom constructor used in C#?
To create new instances of classes or structures
"Being a reference type" implies that:
"The type contains references to other types"
Test your knowledge of value and reference types in object oriented programming with this quiz. Learn about value types containing reference types, passing reference types, System.ValueType, and stack-allocated data.
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