CODEWITHSUNDEEP
c#
Mark Miller
Mark Miller

Reputation: 65

make sure that input has two decimal place

Console.Write("Input price: ");
double price;
string inputPrice = Console.ReadLine();
if (double.TryParse(inputPrice, out price))
{
    price = double.Parse(inputPrice);
}
else
{
    Console.WriteLine("Inventory code is invalid!");
}

so i have to make sure that the price that will be inputed has and must be 2 decimal places. Such as the following:

but

how should i check for it it?

Upvotes: 3

Views: 5596

Answers (2)

PSL
PSL

Reputation: 123739

Try this:-

Console.Write("Input price: ");
double price;
string inputPrice = Console.ReadLine();
var num = Decimal.Parse(inputPrice); //Use tryParse here for safety
if (decimal.Round(num , 2) == num)
{
   //You pass condition
}
else
{
    Console.WriteLine("Inventory code is invalid!");
}

Update

Regex Check:-

var regex = new Regex(@"^\d+\.\d{2}?$"); // ^\d+(\.|\,)\d{2}?$ use this incase your dec separator can be comma or decimal.
var flg = regex.IsMatch(inputPrice);
if(flg)
{
\\its a pass
}
else
{
\\failed
}

Upvotes: 2

Axis
Axis

Reputation: 846

check inputPrice.Split('.')[1].Length == 2

UPDATE:

Console.Write("Input price: ");
            double price;
            string inputPrice = Console.ReadLine();
            if (double.TryParse(inputPrice, out price) && inputPrice.Split('.').Length == 2 && inputPrice.Split('.')[1].Length == 2)
            {
                price = double.Parse(inputPrice);
            }
            else
            {
                Console.WriteLine("Inventory code is invalid!");
            }

Upvotes: -1

Related Questions