C# LAB at HoM 5

Write a program to accept a number from the user and display all the prime numbers from one up to the number entered by user. (Duration: 40 min)

using System;
class primeNumber
{
public void PrimeNum(int Num)
{
Boolean isPrime=true;
Console.WriteLine("\nThe prime numbers between 1-{0} is:",Num);
for (int i = 0; i <=Num; i++)
{
for (int j = 2; j<=Num; j++)
{
if (i !=j && i == 0)
{
isPrime = false;
break;
}
}
if (isPrime == true)
{Console.WriteLine("{0}",i);}
isPrime = true;
}
}
}
class EntryPoint
{
static void Main (string[]args)
{
int Num;
PrimeNumber FindPrimeNo = new PrimeNumber();
string str;
Console.WriteLine("Enter the number till which you want to show the prime Numbers");
str = Convert.ReadLint();
Num = Convert.PrimeNum(Num);
Console.ReadLint();
}
}

Write a program to accept two numbers and check if the first is divisible by the second. In addition, an error message should be displayed if the second number is zero. (Duration: 40 min)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int num1, num2, result;
            Console.WriteLine("Enter First Number");
            num1 = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter socond Number");
            num2 = Convert.ToInt32(Console.ReadLine());
            if (num2 == 0)
            {
                Console.WriteLine("You cannot divide by 0");
            }
            else
            {
                result = num1 % num2;
                if (result ==0)
                    Console.WriteLine("Divisidle");
                else

                Console.WriteLine("Not DIvisible");
            }

        }
    }

}

Write a program to accept two numbers and display the quotient as a result. In addition, an error message should be displayed if the second number is zero or greater than the first number. (Duration: 20 min)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace two_number_1
{
    class Program
    {
        static void Main(string[] args)
        {
            int num1, num2, result;
            Console.WriteLine("Enter two numbers");
            num1 = Convert.ToInt32(Console.ReadLine());
            num2 = Convert.ToInt32(Console.ReadLine());
            if (num2 != 0)
            {
                if (num2 < num1)
                {
                    result = num2 / num2;
                    Console.WriteLine("result");
                }
                else
                {
                    Console.WriteLine("A number cannot be divided by a number greater than itself");
                }
            }
            else
            {
                Console.WriteLine("A number cannot be divided by zero");
            }
        }

    }
}