/// <summary>
/// Gets a transaction amount for the given company.
/// </summary>
/// <param name="company">
/// The company to buy or sell.
/// </param>
/// <returns>
/// The number of shares to buy or sell.
/// </returns>
public static int GetTransactionAmount(Company company)
{
while (true)
{
View.PromptBuySellCompany(company);
var input = Console.ReadLine();
if (input is null)
{
Environment.Exit(0);
}
else
if (!Int32.TryParse(input, out var amount))
{
View.PromptValidInteger();
}
else
{
return(amount);
}
}
}