ادخل رقم والبرنامج ده يقولك هو موجب ولا سالب فردى ام زوجى

static void Main(string[] args)
{
float a,b;

Console.Write("ENTER THE NUMBER TO BE CHECKED ");
a= float.Parse(Console.ReadLine());

b= a%2;

if (a>0)
if (b>0)
Console.WriteLine("THE NUMBER IS POSITIVE AND ODD");
else
Console.WriteLine("THE NUMBER IS POSITIVE AND EVEN");
else
if (b<0)
Console.WriteLine("THE NUMBER IS NIGATIVE AND ODD");
else
Console.WriteLine("THE NUMBER IS NIGATIVE AND EVEN");

}