IP Calculator | C# Online Compiler

IP Calculator by Mason Holmes

using System;
					
public class Program
{
	public static void Main()
	{
		/*IpCalc.TestValidity(10, 0, 40, 10); // valid	1
		IpCalc.TestValidity(127, 54, 67, 89); // invalid	2
		IpCalc.TestValidity(131, 107, 34, 0); // valid	3
		IpCalc.TestValidity(45, 12, 0, 0); // valid		4
		IpCalc.TestValidity(216, 83, 11, 255); // invalid 5
		IpCalc.TestValidity(63, 256, 4, 78); // invalid 6
		IpCalc.TestValidity(200, 67, 34, 0); // invalid 7
		IpCalc.TestValidity(131, 107, 23, 255); // valid 8
		
		IpCalc.TestValidity(206, 183, 211, 255);*/
		
		Console.WriteLine("Enter first octet: ");
		int octOne = int.Parse(Console.ReadLine());
		Console.WriteLine("Enter second octet: ");
		int octTwo = int.Parse(Console.ReadLine());
		Console.WriteLine("Enter third octet: ");
		int octThree = int.Parse(Console.ReadLine());
		Console.WriteLine("Enter fourth octet: ");
		int octFour = int.Parse(Console.ReadLine());
		
		IpCalc.TestValidity(octOne, octTwo, octThree, octFour);
	}
}

public static class IpCalc 
{
	/*public static void GetOcts()
	{
		Console.WriteLine("Enter first octet: ");
		int octOne = int.Parse(Console.ReadLine());
		Console.WriteLine("Enter second octet: ");
		int octTwo = int.Parse(Console.ReadLine());
		Console.WriteLine("Enter third octet: ");
		int octThree = int.Parse(Console.ReadLine());
		Console.WriteLine("Enter fourth octet: ");
		int octFour = int.Parse(Console.ReadLine());
						  
	}*/
	
	public static bool DetermineIfLoopBack(int octOne) 
	{
		bool isLoopBack = true;  

		if (octOne == 127)
			isLoopBack = true; 
		else 
			isLoopBack = false; 
		return isLoopBack; 
	}

	public static string DetermineClass(int octOne)
	{
		string userClass = ""; 
		
		if (octOne <= 127)
		{
			userClass = "A";
			return userClass;
		}
		else if (octOne <= 191)
		{
			userClass = "B";
			return userClass; 
		}
		else if (octOne <= 223)
		{
			userClass = "C";
			return userClass; 
		}
		else
		{
			return "error";      
		}
	}
	
	public static bool DetermineIfOutOfRange(int octOne, int octTwo, int octThree, int octFour)
	{
		bool isInRange = true; 
		
		if ((octOne > 255) | (octTwo > 255) | (octThree > 255) | (octFour > 255))
		{
			isInRange = true;
			return isInRange; 
		}
		else
		{
			isInRange = false;
			return isInRange; 
		}
	}

	public static bool DetermineIfNetworkID(int octTwo, int octThree, int octFour, string userClass) // maybe use a switch statement instead
	{
		bool isNetworkID = false; 

		if (userClass == "A")
		{
			if ((octTwo <= 0) & (octThree <= 0) & (octFour <= 0)) 
			{
				isNetworkID = true;
				return isNetworkID; 
			}
			else
			{
				isNetworkID = false; 
				return isNetworkID; 
			}
		}
		else if (userClass == "B")
		{
			if ((octThree <= 0) & (octFour <= 0)) 
			{
				isNetworkID = true;
				return isNetworkID; 
			}
			else
			{
				isNetworkID = false; 
				return isNetworkID;
			}
		}
		else if (userClass == "C")
		{
			if (octFour <= 0) 
			{
				isNetworkID = true;
				return isNetworkID; 
			}
			else
			{
				isNetworkID = false; 
				return isNetworkID;
			}
		}

		else
		{
			isNetworkID = false;
			return isNetworkID; 
		}
	}

	public static bool DetermineIfBraodcastID(int octTwo, int octThree, int octFour, string userClass) // maybe use a switch statement instead
	{
		bool isBroadcastID = false; 

		if (userClass == "A")
		{
			if ((octTwo >= 255) & (octThree >= 255) & (octFour >= 255)) 
			{
				isBroadcastID = true;
				return isBroadcastID; 
			}
			else
			{
				isBroadcastID = false; 
				return isBroadcastID; 
			}
		}
		else if (userClass == "B")
		{
			if ((octThree >= 255) & (octFour >= 255)) 
			{
				isBroadcastID = true;
				return isBroadcastID; 
			}
			else
			{
				isBroadcastID = false; 
				return isBroadcastID;
			}
		}
		else if (userClass == "C")
		{
			if (octFour >= 255) 
			{
				isBroadcastID = true;
				return isBroadcastID; 
			}
			else
			{
				isBroadcastID = false; 
				return isBroadcastID;
			}
		}

		else
		{
			isBroadcastID = false;
			return isBroadcastID; 
		}
	}


	public static bool TestValidity(int octOne, int octTwo, int octThree, int octFour)
	{
		bool isLoopBack = DetermineIfLoopBack(octOne);
		string userClass = DetermineClass(octOne);
		bool isNetworkID = DetermineIfNetworkID(octTwo, octThree, octFour, userClass);
		bool isBroadcastID = DetermineIfBraodcastID(octTwo, octThree, octFour, userClass);
		bool isInRange = DetermineIfOutOfRange(octOne, octTwo, octThree, octFour); 

		bool isValid = false; 

		if (isLoopBack == true)
		{
			isValid = false;
			Console.WriteLine("Invalid — Loopback Address"); 
			return isValid;
		} 
		else if (isInRange == true)
		{
			isValid = false; 
			Console.WriteLine("Invalid — Out of Range");
			return isValid; 
		}
		else if (isNetworkID == true)
		{
			isValid = false;
			Console.WriteLine("Invalid — Network ID");
			return isValid;
		}
		else if (isBroadcastID == true)
		{
			isValid = false; 
			Console.WriteLine("Invalid — Broadcast ID");
			return isValid;
		}
		else 
		{
			isValid = true; 
			Console.WriteLine("Valid");
			return isValid; 
		}

	}
}

​x
 
using System;
                    
public class Program
{
    public static void Main()
    {
        /*IpCalc.TestValidity(10, 0, 40, 10); // valid  1
        IpCalc.TestValidity(127, 54, 67, 89); // invalid    2
        IpCalc.TestValidity(131, 107, 34, 0); // valid  3
        IpCalc.TestValidity(45, 12, 0, 0); // valid     4
        IpCalc.TestValidity(216, 83, 11, 255); // invalid 5
        IpCalc.TestValidity(63, 256, 4, 78); // invalid 6
        IpCalc.TestValidity(200, 67, 34, 0); // invalid 7
        IpCalc.TestValidity(131, 107, 23, 255); // valid 8
        
        IpCalc.TestValidity(206, 183, 211, 255);*/
        
        Console.WriteLine("Enter first octet: ");
        int octOne = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter second octet: ");
        int octTwo = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter third octet: ");
        int octThree = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter fourth octet: ");
        int octFour = int.Parse(Console.ReadLine());
        
        IpCalc.TestValidity(octOne, octTwo, octThree, octFour);
    }
}
​
public static class IpCalc 
{
    /*public static void GetOcts()
    {
        Console.WriteLine("Enter first octet: ");
        int octOne = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter second octet: ");
        int octTwo = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter third octet: ");
        int octThree = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter fourth octet: ");
        int octFour = int.Parse(Console.ReadLine());
                          
    }*/
    
    public static bool DetermineIfLoopBack(int octOne) 
    {
        bool isLoopBack = true;  
​
        if (octOne == 127)
            isLoopBack = true; 
        else 
            isLoopBack = false; 
        return isLoopBack; 
    }
​
    public static string DetermineClass(int octOne)
    {
        string userClass = ""; 
        
        if (octOne <= 127)
        {
            userClass = "A";
            return userClass;
        }
        else if (octOne <= 191)
        {
            userClass = "B";
            return userClass; 
        }
        else if (octOne <= 223)
        {
            userClass = "C";
            return userClass; 
        }
        else
        {
            return "error";      
        }
    }
    
    public static bool DetermineIfOutOfRange(int octOne, int octTwo, int octThree, int octFour)
    {
        bool isInRange = true; 
        
        if ((octOne > 255) | (octTwo > 255) | (octThree > 255) | (octFour > 255))
        {
            isInRange = true;
            return isInRange; 
        }
        else
        {
            isInRange = false;
            return isInRange; 
        }
    }
​
    public static bool DetermineIfNetworkID(int octTwo, int octThree, int octFour, string userClass) // maybe use a switch statement instead
    {
        bool isNetworkID = false; 
​
        if (userClass == "A")
        {
            if ((octTwo <= 0) & (octThree <= 0) & (octFour <= 0)) 
            {
                isNetworkID = true;
                return isNetworkID; 
            }
            else
            {
                isNetworkID = false; 
                return isNetworkID; 
            }
        }
        else if (userClass == "B")
        {
            if ((octThree <= 0) & (octFour <= 0)) 
            {
                isNetworkID = true;
                return isNetworkID; 
            }
            else
            {
                isNetworkID = false; 
                return isNetworkID;
            }
        }
        else if (userClass == "C")
        {
            if (octFour <= 0) 
            {
                isNetworkID = true;
                return isNetworkID; 
            }
            else
            {
                isNetworkID = false; 
                return isNetworkID;
            }
        }
​
        else
        {
            isNetworkID = false;
            return isNetworkID; 
        }
    }
​
    public static bool DetermineIfBraodcastID(int octTwo, int octThree, int octFour, string userClass) // maybe use a switch statement instead
    {
        bool isBroadcastID = false; 
​
        if (userClass == "A")
        {
            if ((octTwo >= 255) & (octThree >= 255) & (octFour >= 255)) 
            {
                isBroadcastID = true;
                return isBroadcastID; 
            }
            else
            {
                isBroadcastID = false; 
                return isBroadcastID; 
            }
        }
        else if (userClass == "B")
        {
            if ((octThree >= 255) & (octFour >= 255)) 
            {
                isBroadcastID = true;
                return isBroadcastID; 
            }
            else
            {
                isBroadcastID = false; 
                return isBroadcastID;
            }
        }
        else if (userClass == "C")
        {
            if (octFour >= 255) 
            {
                isBroadcastID = true;
                return isBroadcastID; 
            }
            else
            {
                isBroadcastID = false; 
                return isBroadcastID;
            }
        }
​
        else
        {
            isBroadcastID = false;
            return isBroadcastID; 
        }
    }
​
​
    public static bool TestValidity(int octOne, int octTwo, int octThree, int octFour)
    {
        bool isLoopBack = DetermineIfLoopBack(octOne);
        string userClass = DetermineClass(octOne);
        bool isNetworkID = DetermineIfNetworkID(octTwo, octThree, octFour, userClass);
        bool isBroadcastID = DetermineIfBraodcastID(octTwo, octThree, octFour, userClass);
        bool isInRange = DetermineIfOutOfRange(octOne, octTwo, octThree, octFour); 
​
        bool isValid = false; 
​
        if (isLoopBack == true)
        {
            isValid = false;
            Console.WriteLine("Invalid — Loopback Address"); 
            return isValid;
        } 
        else if (isInRange == true)
        {
            isValid = false; 
            Console.WriteLine("Invalid — Out of Range");
            return isValid; 
        }
        else if (isNetworkID == true)
        {
            isValid = false;
            Console.WriteLine("Invalid — Network ID");
            return isValid;
        }
        else if (isBroadcastID == true)
        {
            isValid = false; 
            Console.WriteLine("Invalid — Broadcast ID");
            return isValid;
        }
        else 
        {
            isValid = true; 
            Console.WriteLine("Valid");
            return isValid; 
        }
​
    }
}
​

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