This code is appropriate for you, try this..
Program:
using System;
class LargestSmallest
{
public static void Main()
{
int a,b,c,largest,smallest;
Console.Write("Enter No 1 : ");
a = int.Parse(Console.ReadLine());
Console.Write("Enter No 2 : ");
b = int.Parse(Console.ReadLine());
Console.Write("Enter No 3 : ");
c = int.Parse(Console.ReadLine());
if (a > b)
{
if(a > c)
{
largest = a;
}
else
{
largest = c;
}
}
else
{
if(c>b)
{
largest = c;
}
else
{
largest = b;
}
}
if (a < b)
{
if(a < c)
{
smallest = a;
}
else
{
smallest = c;
}
}
else
{
if(c<b)
{
smallest = c;
}
else
{
smallest = b;
}
}
Console.WriteLine("\n\n The Largest Number = " +largest);
Console.WriteLine("\n The Smallest Number = " +smallest);
Console.ReadLine();
}
}