public static Biginteger operator +(Biginteger First, Biginteger Second)
{
int CountOfFirst = First.amount;
int CountOfSecond = Second.amount;
int MaxCount = Math.Max(CountOfFirst, CountOfSecond);
char[] Result = new char[1000];
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'))));
memory = 0;
Result[MaxCount - i] += '0';
}
else
{
Result[MaxCount - i] = Convert.ToChar(Convert.ToInt32(Second.str[CountOfSecond - i - 1]) - '0');
Result[MaxCount - i] += '0';
}
//Console.WriteLine(Result[MaxCount - i] + "Fisrt if");
continue;
}
if (CountOfSecond <= i)
{
if (memory == 1)
{
if (memory + Convert.ToInt32(First.str[CountOfFirst - i - 1] -'0') >= 10)
{
memory = 1;
Result[MaxCount - i] = Convert.ToChar((Convert.ToInt32(First.str[CountOfFirst - i - 1]))
}
Result[MaxCount - i] = Convert.ToChar((memory + Convert.ToInt32(First.str[CountOfFirst - i - 1]) + '0'));
memory = 0;
Result[MaxCount - i] -= '0';
//Console.WriteLine(Convert.ToChar(8+ '1'));
}
else
{
Result[MaxCount - i] = Convert.ToChar((Convert.ToInt32(First.str[CountOfFirst - i - 1]) + '0'));
Result[MaxCount - i] -= '0';
//Console.WriteLine(Result[MaxCount - i] + " else");
}
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');
}
//Console.WriteLine(Result[MaxCount - i]);
}
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 number");
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();
}