//Payment methods
public static decimal PayCash(decimal grandTotal)
{
decimal amount = 0m, change = 0m;
bool doAgain = false;
//Get amount they are paying
do
{
Console.WriteLine("Please enter the amount of cash you would like to apply:");
amount = Validation.ValidCash(Console.ReadLine());
if (amount == grandTotal)
{
Console.WriteLine("Paid in full");
change = grandTotal - amount;
return(change);
}
else if (amount > grandTotal)
{
change = amount - grandTotal;
Console.WriteLine($"Change: {change}");
return(change);
}
else
{
Console.WriteLine("That is not a valid amount.");
doAgain = true;
}
} while (doAgain == true);
return(0m);
}
