Question

Write a program that reads two positive integer numbers and prints how many numbers p exist between them such that the reminder of the division by 5 is 0.

Examples:

start	end	p	comments
17	25	2	20, 25
5	30	6	5, 10, 15, 20, 25, 30
3	33	6	5, 10, 15, 20, 25, 30
3	4	0	-
99	120	5	100, 105, 110, 115, 120
107	196	18	110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195

Answer 1

Indeed this task is interesting! ;-P Instead of:

(i % 5 == 0)

another number can be used: 7,2, etc.

Here is my solution:

using System;

class NumbersInIntervalDividableByGivenNumber
{
    static void Main()
    {
        Console.WriteLine("Please enter your 1st number:");
        int start = int.Parse(Console.ReadLine());

        Console.WriteLine("Please enter your 2nd number:");
        int finish = int.Parse(Console.ReadLine());

        int p = 0;
        for (int i = start; i <= finish; i++)
        {
            if (i % 5 == 0)
            {
                Console.WriteLine(i);
                p++;
            }
        }
        Console.WriteLine("{0} numbers are dividible by 5: from {1} to {2}.", p, start, finish);
    }
}