WAP to find largest number among 3 numbers

 using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;
namespace greatest
{
Class Program
{
static void main(string[] args)
{
double a, b, c;
Console.WriterLine("Please input three numbers.");
a=Convert.Toint32(Console.ReadLine());
b=Convert.Toint32(Console.ReadLine());
c=Convert.Toint32(Console.ReadLine());
if(a>b && a>c)
{
Console.WriteLine("The greatest number is:{0}",a);
}
else if (b>a && b>c)
{
Console.WriteLine("The greatest number is:{0}",b);
}
else
{
Console.WriteLine("The greatest number is: {0}",c);
}
Console.ReadLine();
}
}
}

OUTPUT:

Please input three numbers. 

5

6

7

The greatest number is: 7