Even Fibonacci numbers

ProjectEuler Problem 2

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

class fibb{

    public static void main(String args[]){

        int a=0,b=1,c,sum=2;

        for(int i=1;i<=4000000;i++)

        {

            c=a+b;

            a=b;

            b=c;

            if(c%2==0)

            {

            sum+=c;

            //System.out.print(c);

            }

        }

        System.out.print(sum);

    }

}

output

-1833689712