/// <summary>
/// Adds Two Numbers.
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
public Sum(string a, string b)
{
int number1, number2;
number1 = a[0];
number2 = b[0];
StringManipulation manipulationObj = new StringManipulation();
a = manipulationObj.ReverseString(a);
b = manipulationObj.ReverseString(b);
a = a.TrimEnd('-');
b = b.TrimEnd('-');
Addition addObj = new Addition();
if (number1 == 45 && number2 == 45)
{
addObj.AddNegativeNumbers(a, b);
}
else if (number1 == 45 && number2 != 45)
{
addObj.AddOneNegativeNumber(a, b);
}
else if (number1 != 45 && number2 == 45)
{
addObj.AddOneNegativeNumber(a, b);
}
else if (number1 != 45 && number2 != 45)
{
addObj.AddPositiveNumbers(a, b);
}
}