SUM OF FIBONACCI SEQUENCE
namespace SumOfFibSequence
{
class Program
{
static void Main(string[] args)
{
int x = 0;
int y = 1;
int n = 5;
if (n == 0)
{
Console.WriteLine("0");
return;
}
else if (n == 1)
{
Console.WriteLine("1");
return;
}
int sum = 1;
int z = 0;
for (int i = 2; i < n; i++)
{
z = x + y;
sum += z;
x = y;
y = z;
}
Console.WriteLine(sum);
}
}
}
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