using System;//20

​

int FindLongestStrictlyIncreasingSequence()

{

    Console.WriteLine("Enter a sequence of positive numbers (end with 0):");

    int longestSequence = 0;

    int currentSequence = 0;

    int prevNumber = -1;

    int num = -1;

    while (num != 0)

    {

        string input = Console.ReadLine();

        bool isNumber = int.TryParse(input, out num);

​

        if (!isNumber || num < 0)

        {

            Console.WriteLine("Please enter a positive number or 0 to stop.");

            num = -1; 

            continue;

        }

​

        if (num == 0)

        {

            if (currentSequence > longestSequence)

            {

                longestSequence = currentSequence;

            }

        }

        else if (prevNumber == -1 || num > prevNumber)

        {

            currentSequence++;

        }

        else

        {

            if (currentSequence > longestSequence)

            {

                longestSequence = currentSequence;

            }

            currentSequence = 1;

        }

        prevNumber = num;

    }

    return longestSequence;

}

int result = FindLongestStrictlyIncreasingSequence();

Console.WriteLine("The length of the longest strictly increasing sequence is: " + result);