public static Task <int> PrimeCheckTask(int from, int to)
{
var cnt = 0;
return(Task.Run(() =>
{
for (int i = from; i < to; i++)
{
try
{
if (PrimeCheck.IsPrimeNumber(i))
{
cnt++;
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
continue;
}
}
return cnt;
}));
}
static async Task Main(string[] args)
{
Console.Title = "Prime number calculator";
do
{
string input = null;
var number = -1;
do
{
do
{
Console.WriteLine("-----------------------------------------------------");
Console.WriteLine("Type end for closing the application.");
Console.WriteLine("Type clear for clean console.");
Console.WriteLine("Type check for checking a specific number.");
Console.WriteLine("Or, enter an upper limit (integer):");
Console.WriteLine("Or, type kgv for evaluating the kgv of two integers:");
Console.WriteLine("-----------------------------------------------------");
input = Console.ReadLine();
if (input == "end")
{
return;
}
} while (string.IsNullOrEmpty(input));
if (input == "clear")
{
Console.Clear();
}
if (input == "kgv")
{
Console.WriteLine("-----------------------------------------------------");
Console.WriteLine("Ok, lets get the KGV, enter the first value:");
Console.WriteLine("-----------------------------------------------------");
var small = Console.ReadLine();
Console.WriteLine("Ok, now the second value:");
var big = Console.ReadLine();
int smallNUM = int.Parse(small);
int bigNUM = int.Parse(big);
var kgv = SimpleMathOps.KGV_multiple(smallNUM, bigNUM);
Console.WriteLine($"The kgv of {smallNUM} and {bigNUM} is {kgv}");
input = "continue";
}
if (input == "check")
{
Console.WriteLine("-----------------------------------------------------");
Console.WriteLine("Ok, lets check your number:");
Console.WriteLine("-----------------------------------------------------");
input = Console.ReadLine();
try
{
number = int.Parse(input);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
var isPrime = false;
try
{
isPrime = PrimeCheck.IsPrimeNumber(number);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Console.WriteLine($"Number {number} is prime? {isPrime}");
input = "continue";
number = -1;
}
if (input == "continue")
{
continue;
}
try
{
number = int.Parse(input);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
} while (number == -1);
Console.WriteLine("Result:");
await PrimeCheck.GetAllPrimeNumbersAsync(number);
} while (true);
}