public static NumarMare operator *(NumarMare a, NumarMare b)
{
Stack <string> s = new Stack <string>();
StringBuilder c = new StringBuilder();
NumarMare result = new NumarMare();
int i = a.data.Length - 1, j = b.data.Length - 1;
int carry = 0, prod, k;
while (j >= 0)
{
k = i;
carry = 0;
while (k >= 0)
{
prod = ((a.data[k] - '0') * (b.data[j] - '0') + carry) % 10;
carry = ((a.data[k] - '0') * (b.data[j] - '0') + carry) / 10;
s.Push(Convert.ToString(prod));
k--;
}
if (carry != 0)
{
s.Push(Convert.ToString(carry));
}
while (s.Count != 0)
{
c.Append(s.Pop());
}
for (k = 0; k < b.data.Length - 1 - j; k++)
{
c.Append("0");
}
result = result + new NumarMare(c.ToString());
c.Clear();
j--;
}
return(result);
}
static void Main(string[] args)
{
NumarMare a = new NumarMare("1");
NumarMare b = new NumarMare("1");
NumarMare fact = new NumarMare("1");
NumarMare c = a + b;
for (int i = 3; i <= 100; i++)
{
c = a + b;
a = b;
b = c;
}
for (int i = 2; i <= 1000; i++)
{
fact = fact * new NumarMare(Convert.ToString(i));
}
Console.WriteLine("Al 100-lea termen fibonacci este {0}", c);
Console.WriteLine("1000! = {0}", fact);
Console.ReadKey();
}