Question

Describe the "simple" mechanism that we use in C# to store values in memory while our programs are running. Give a simple example (an actual statement) that names storage in our program and places a value in the named memory location.

Answer 1

In C#, Values are stored either in Value Data types or Reference Data Types. Variables of type 'Value Datatype' and 'Reference Data Types' are created to store values in memory.C# compiler implicitly maps the name of variable to address location in memory where value will be stored.

Value Data types refers to variables of type int,char,bool,float etc.

Ex: int number=20;

int x=number;

Here 20 is stored in address location X123 .whenever number variable is used in the program like "x=number",compiler maps number variable to address 'X123' and reads the value from the memory location and assigns the value to x variable.

Similarly ,statement like (number=20 )=> compiler maps number variable to address 'X123' and stores the value in the memory location

Reference Data types contains value Data types and complex datatypes.

Ex:

public class Test{

int x;

float y;

Test t ; //Reference Data Type

}

A variable is a name given to storage area that programm's use for manipulation.Each variable has a specific type, size, range of values that can be stored within that memory, set of operations that can be applied.

C# Example

Public class Test

{

public Static void main()

{

int x = 100;

int *ptr = & x;

Console.WriteLine((int)ptr) // Displays the memory address  

Console.WriteLine(*ptr) //Displays the value at address

}

}