public static RNum GetNum()
{
Console.WriteLine("Number: ");
string str = Console.ReadLine();
double a = CheckNum(str);
RNum r = RNum.GetNumberFromStr(a);
return(r);
}
public static RNum GetFraction()
{
Console.WriteLine("Fraction: ");
string str = Console.ReadLine();
while (!CheckFraction(str))
{
Console.Write("Incorrect input, repeat: ");
str = Console.ReadLine();
}
RNum r = RNum.GetFractionFromStr(str);
return(r);
}