japl/tests/japl/euler/problem2.jpl

//[Test: problem2]
//[source: mixed]
// Sum of even valued fibonacci numbers that don't exceed 4M

var a = 1;
var b = 1;
var c;
var sum = 0;

while (a < 4000000)
{
    if (a % 2 == 0)
        sum = sum + a;
    c = a + b;
    a = b;
    b = c;
}
print(sum);//stdout:4613732
//[end]
//[end]