// ПЕРЕГРУЗКА ОПЕРАТОРА +
public static BigInteger operator +(BigInteger first, BigInteger second)
{
int CountOfFirst = first.amount;
int CountOfSecond = second.amount;
int MaxCount = Math.Max(CountOfFirst, CountOfSecond); // Math.Max method
char[] Result = new char[1000]; // array
int memory = 0;
for(int i = 0; i < MaxCount; i++)
{
if(CountOfFirst <= i)
{
if(memory == 1)
{
Result[MaxCount - i] = (Convert.ToChar((memory + Convert.ToInt32(second.str[CountOfSecond - i - 1] - '0')) + '0'));
memory = 0;
}
else
{
Result[MaxCount - i] = second.str[CountOfSecond - i - 1];
}
continue;
}
if(CountOfSecond <= i)
{
if(memory == 1)
{
Result[MaxCount - i] = (Convert.ToChar((memory + Convert.ToInt32(first.str[CountOfFirst - i - 1] - '0')) + '0'));
memory = 0;
}
else
{
Result[MaxCount - i] = first.str[CountOfFirst - i - 1];
}
continue;
}
if(memory + Convert.ToInt32(first.str[CountOfFirst - i - 1] - '0') + Convert.ToInt32(second.str[CountOfSecond - i - 1] - '0') >= 10)
{
Result[MaxCount - i] = Convert.ToChar((memory + Convert.ToInt32(first.str[CountOfFirst - i - 1] - '0') + Convert.ToInt32(second.str[CountOfSecond - i - 1] - '0')) % 10);
memory = 1;
Result[MaxCount - i] = Convert.ToChar(Result[MaxCount - i] + '0');
}
else
{
Result[MaxCount - i] = Convert.ToChar(memory + Convert.ToInt32(first.str[CountOfFirst - i - 1] - '0') + Convert.ToInt32(second.str[CountOfSecond - i - 1] - '0'));
memory = 0;
Result[MaxCount - i] = Convert.ToChar(Result[MaxCount - i] + '0');
}
}
string Converting = " ";
if (memory == 1)
{
Result[0] = '1';
}
else
Result[0] = '0';
for(int i = 0; i < MaxCount; i++)
{
Converting += Result[i];
}
BigInteger final = new BigInteger(Converting);
return final;
}
static void Main(string[] args)
{
Console.WriteLine("Enter two big numbers:");
string FirstString = Console.ReadLine();
string SecondString = Console.ReadLine();
BigInteger FS = new BigInteger(FirstString);
BigInteger SS = new BigInteger(SecondString);
BigInteger result = FS + SS;
Console.WriteLine(result);
Console.ReadKey();
}
