static void Main(string[] args)
{
int numbersQuantity;
Console.WriteLine("Enter desired path to generated file:");
string inputFile = Console.ReadLine();
Console.WriteLine("enter nuber of records (<1bill)");
if (!Int32.TryParse(Console.ReadLine(), out numbersQuantity))
{
Console.WriteLine("not integer");
}
Console.WriteLine("Enter desired path to output file:");
string outFile = Console.ReadLine();
// creating file with randomly generated numbers written each in new row
FileManager fileManager = new FileManager();
RandomNumbers randData = new RandomNumbers();
int[] generatedNumbers = randData.GenerateNumbers(numbersQuantity);
fileManager.CreateFile(inputFile, generatedNumbers);
int[] arrayWithRandomNumbers = fileManager.ReadFileToArray(inputFile);
MergeSort sort = new MergeSort();
fileManager.CreateFile(outFile, sort.Sort(arrayWithRandomNumbers));
}