static void Main(string[] args)
{
int myInt = 0;
bool run = true;
Console.WriteLine("Welcome to the Factorial Calculator!");
while (run)
{
myInt = IntValidator.getIntWithinRange("", 0, 20);
long factorial = CalculateFactorial(myInt);
Console.WriteLine("\nThe factorial of " + myInt + " is " + factorial + ".");
run = Continue();
}
Console.ReadLine();
}
//For the user to proceed, he or she must enter an integer within the specified range.
public static int getIntWithinRange(string prompt, int min, int max)
{
bool run = true;
IntValidator num = new IntValidator();
while (run)
{
Console.Write("\nEnter an integer between " + min + " and " + max + ":");
_myInt = IntValidator.getInt(Console.ReadLine());
if (_myInt < min)
{
Console.WriteLine("\nError! Please enter an integer greater than " + (min - 1));
}
else if (_myInt > max)
{
Console.WriteLine("\nError! Please enter an integer less than " + (max + 1));
}
else
{
run = false;
}
}
return(_myInt);
}