public void Remove(Sweet sweet)
{
if (!Sweets.Remove(sweet))
{
throw new ArgumentOutOfRangeException();
}
Weight -= sweet.Weight;
}
public static int CompareSweetsBySugarPercentage(Sweet x, Sweet y)
{
if (x == null)
{
if (y == null)
{
return(0);
}
else
{
return(-1);
}
}
else
{
if (y == null)
{
return(0);
}
return(x.SugarPercentage.CompareTo(y.SugarPercentage));
}
}
public static int CompareSweetsByWeight(Sweet x, Sweet y)
{
if (x == null)
{
if (y == null)
{
return(0);
}
else
{
return(-1);
}
}
else
{
if (y == null)
{
return(0);
}
return(x.Weight.CompareTo(y.Weight));
}
}
public static int CompareSweetsByName(Sweet x, Sweet y)
{
if (x == null)
{
if (y == null)
{
return(0);
}
else
{
return(-1);
}
}
else
{
if (y == null)
{
return(0);
}
return(x.Name.CompareTo(y.Name));
}
}
static void Main(string[] args)
{
Present present = PresentParser.ParseFromFile("sweetlist.txt");
int n;
while (true)
{
Console.Clear();
Console.WriteLine("1.Show present containment");
Console.WriteLine("2.Find chocolate candy");
Console.WriteLine("3.Find sugar candy");
Console.WriteLine("4.Find candy by sugar range");
Console.WriteLine("5.Sort by sugar percentage");
Console.WriteLine("6.Sort by weight");
Console.WriteLine("7.Sort by name");
Console.WriteLine("8.Exit");
while (!int.TryParse(Console.ReadLine(), out n))
{
Console.WriteLine("Wrong input");
}
if (n == 1)
{
foreach (Sweet ns in present.Sweets)
{
Console.WriteLine(ns.Name);
Console.WriteLine(ns.Weight);
Console.WriteLine(ns.SugarPercentage);
}
}
if (n == 2)
{
Chocolate res = present.FindFirstChocolateCandy();
if (res != null)
{
Console.WriteLine(res.Name);
Console.WriteLine(res.Type);
Console.WriteLine(res.Weight);
}
else
{
Console.WriteLine("There is no such candy");
}
}
if (n == 3)
{
Sugar res = present.FindFirstSugarCandy();
if (res != null)
{
Console.WriteLine(res.Name);
Console.WriteLine(res.Type);
Console.WriteLine(res.Weight);
}
else
{
Console.WriteLine("There is no such candy");
}
}
if (n == 4)
{
double x, y;
Console.WriteLine("Input sugar range:");
while (!double.TryParse(Console.ReadLine(), out x))
{
Console.WriteLine("Wrong input");
}
while (!double.TryParse(Console.ReadLine(), out y))
{
Console.WriteLine("Wrong input");
}
Sweet res = present.FindFirstBySugarPercentageRange(x, y);
if (res != null)
{
Console.WriteLine(res.Name);
}
else
{
Console.WriteLine("There is no such candy");
}
}
if (n == 5)
{
present.Sort(Sweet.CompareSweetsBySugarPercentage);
}
if (n == 6)
{
present.Sort(Sweet.CompareSweetsByWeight);
}
if (n == 7)
{
present.Sort(Sweet.CompareSweetsByName);
}
if (n == 8)
{
break;
}
Console.ReadKey();
}
}
public static Present ParseFromFile(string filename)
{
StreamReader reader = new StreamReader(File.OpenRead(filename));
List <Sweet> sweets = new List <Sweet>();
while (!reader.EndOfStream)
{
string name = reader.ReadLine(); //Reading sweet name
double weight, sugarAmount;
if (!double.TryParse(reader.ReadLine(), out weight))
{
throw new FormatException();
}
if (!double.TryParse(reader.ReadLine(), out sugarAmount))
{
throw new FormatException(); //Reading sweet weight and sugarAmount,checking format
}
Sweet obj;
string type = reader.ReadLine();
if (type == "Sweet")
{
obj = new Sweet()
{
Name = name,
Weight = weight,
SugarAmount = sugarAmount
};
}
else if (type == "Chocolate")
{
Chocolate.Types ctype;
if (!Chocolate.Types.TryParse(reader.ReadLine(), out ctype))
{
throw new FormatException(); //Parsing chocolate type
}
double palmOilAmount;
if (!double.TryParse(reader.ReadLine(), out palmOilAmount))
{
throw new FormatException(); //Parsing palm oil amount
}
obj = new Chocolate()
{
Name = name,
Weight = weight,
SugarAmount = sugarAmount,
PalmOilAmount = palmOilAmount,
Type = ctype
};
}
else if (type == "Sugar")
{
Sugar.Types ctype;
if (!Sugar.Types.TryParse(reader.ReadLine(), out ctype))
{
throw new FormatException(); //Sugar candy type parsing
}
double hardness;
if (!double.TryParse(reader.ReadLine(), out hardness))
{
throw new FormatException(); //Hardness parsing
}
obj = new Sugar()
{
Name = name,
Weight = weight,
SugarAmount = sugarAmount,
Hardness = hardness,
Type = ctype
};
}
else
{
throw new FormatException();
}
sweets.Add(obj);
}
reader.Close();
return(new Present(sweets));
}
public void Add(Sweet sweet)
{
Sweets.Add(sweet);
Weight += sweet.Weight;
}