Answer 1

class Atm
{
public double InitialAmt=20,000;
public double WithDrawAmt;
public double DepositeAmt;

public Atm()
{
console.writeline("Your Current Balance Is:+",InitialAmt);
}

public void Getdata()
{
string Name;
console.writeline("Enter Your Choice:(W) for WithDraw and (D) for Deposite:-");
Name=console.Readline();
if(Name=="W")
{
WithDraw();
}
elseif(Name=="D")
{
Deposite();
}
else
{
console.writeline("Wrong Choice !!!!");
}
}

public void WithDraw()
{
console.writeline("Enter Amount to WithDraw:");
WithDrawAmt=console.Readline();
InitialAmt=InitialAmt-WithDrawAmt;
console.writeline("Your Available Balance is:+",InitialAmt);
}

public void Deposite()
{
console.writeline("Enter Amount to Deposite:");
DepositeAmt=console.Readline();
InitialAmt=InitialAmt+DepositeAmt;
console.writeline("Your Available Balance is:+",InitialAmt);
}

}
Static Void Main(String[] args)
{
Atm a=New Atm();
a.GetData();
console.ReadKey();
}