Checking various overflow conditions in .NET

overflow.cs

using System;
using static System.Console;
var m = int.MaxValue;
// possible solutions:
try
{
    WriteLine("n is an IntPtr");
    var n = IntPtr.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        var x = m + 5;
        WriteLine(x);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

try
{
    WriteLine("n is a float");
    var n = float.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        var x = m + 5;
        WriteLine(x);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

try
{
    WriteLine("n is a double");
    var n = double.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        var x = m + 5;
        WriteLine(x);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

try
{
    WriteLine("n is a long, but filled with int.MaxValue (we're cheating a little bit here)");
    long n = int.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        var x = m + 5;
        WriteLine(x);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

// these fail on the first addition:
try
{
    var n = nint.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

try
{
    var n = nuint.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

try
{
    var n = int.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

// decimal fails, even though it is a floating point number
try
{
    var n = decimal.MaxValue;
    checked
    {
        var y = n + 5;
        WriteLine(y);
        throw new Exception("Should not get here.");
    }
}
catch (OverflowException) { }

// by default, C# does not check for overflow:
{
    var n = int.MaxValue;
    var y = n + 5;
    WriteLine(y);
}

// int.MaxValue + 1 is equal to int.MinValue
WriteLine("Is int.MaxValue + 1 == int.MinValue? " + (m + 1 == int.MinValue));

WriteLine("Done!");