static void Main(string[] args)
{
// Declare variants
View view = new View(args);
BigInteger bigInteger1 = new BigInteger();
BigInteger bigInteger2 = new BigInteger();
Console.WriteLine("*-----------------------------*");
// Continue if having error
if (view.IsHaveError(ref bigInteger1, ref bigInteger2))
{
// Do nothing
}
else
{
//Export result for user
view.ExportResult(bigInteger1.StringInteger, bigInteger2.StringInteger, bigInteger1.Add2BigInteger(bigInteger2));
}
// Pause for debugging
Console.Read();
}
/// <summary>
/// Add 2 big integer number
/// </summary>
/// <param name="bigInteger"> number will be added</param>
/// <returns> result </returns>
public string Add2BigInteger(BigInteger bigInteger)
{
StringBuilder result = new StringBuilder(); // Result of addition
// Return string is most shortest
int length = (StringInteger.Length > bigInteger.StringInteger.Length)
? bigInteger.StringInteger.Length
: StringInteger.Length;
// Save temp for addition
int temp = 0;
for (int i = 0; i < length; ++i)
{
// sum of 2 number
int sum = Int32.Parse(strInteger[i].ToString()) +
Int32.Parse(bigInteger.StringInteger[i].ToString()) +
temp;
temp = sum / 10; // temp of addition
result.Insert(i, (sum % 10).ToString()); // Insert sum into result string
}
// Continue insert remain of longer string
if (StringInteger.Length > length)
{
for (int i = length; i < StringInteger.Length; ++i)
{
int sum = Int32.Parse(strInteger[i].ToString()) + temp;
temp = sum / 10;
result.Insert(i, (sum % 10).ToString());
}
// Add temp into result string
if (temp > 0)
{
result.Insert(StringInteger.Length, temp.ToString());
}
}
else
{
// Continue insert remain of longer string
if (bigInteger.StringInteger.Length > length)
{
for (int i = length; i < bigInteger.StringInteger.Length; ++i)
{
int sum = Int32.Parse(bigInteger.StringInteger[i].ToString()) + temp;
temp = sum / 10;
result.Insert(i, (sum % 10).ToString());
}
// Add temp into result string
if (temp > 0)
{
result.Insert(bigInteger.StringInteger.Length, temp.ToString());
}
}
else // 2 string's length equal
{
// Add temp into result string
if (temp > 0)
{
result.Insert(length, temp.ToString());
}
}
}
return result.ToString(); // return result string
}
/// <summary>
/// Check error for input
/// </summary>
/// <param name="bigInteger1">The first big number</param>
/// <param name="bigInteger2">The second big number</param>
/// <returns>The value number1 + number2</returns>
public bool IsHaveError(ref BigInteger bigInteger1, ref BigInteger bigInteger2)
{
// Check syntax
if (strInput.Length != 2)
{
Console.WriteLine("Sai cu phap! Cu phap: Add2N <SoThu1> <SoThu2>");
Console.WriteLine("*-----------------------------*");
return true; // Return having error
}
else
{
bool error = false; // Check error
Regex myRegex = new Regex(@"^\d{1,}$"); // Condition
// Check error for number 1
if (!myRegex.IsMatch(strInput[0]))
{
error = true; // Having error
Console.Write(strInput[0] + " ");
}
// Check error for number 1
if (!myRegex.IsMatch(strInput[1]))
{
error = true; // Having error
Console.Write(strInput[1] + " ");
}
if (error)
{
Console.WriteLine("Khong hop le!");
Console.WriteLine("*-----------------------------*");
return true; // Return having error
}
}
Delete0InString(ref strInput[0]);
bigInteger1.StringInteger = ReverseString(strInput[0]);
Delete0InString(ref strInput[1]);
bigInteger2.StringInteger = ReverseString(strInput[1]);
return false; // None having error
}