UInt64 factorial = 1; for (UInt64 i = 1; i <= 20; i++) { factorial *= i; } Console.WriteLine(factorial);
UInt64 maxVal = UInt64.MaxValue; Console.WriteLine(maxVal);This code simply demonstrates how the UInt64 data type can be used to retrieve the maximum possible value for an unsigned 64-bit integer. The System.UInt64 data type is part of the System namespace in the .NET Framework, which means it is a standard library that is readily available for use in C# programs.