# [Golang] Even Fibonacci Numbers - Problem 2 - Project Euler

**Problem**: [1]

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.

**Solution**:

the sum of the even-valued terms below 4,000,000 is 4613732

```
package main
import (
"fmt"
)
func main() {
var a, b, sum uint64 = 1, 2, 2
for a+b < 4000000 {
next := a + b
//fmt.Println(next)
if next%2 == 0 {
sum += next
}
a = b
b = next
}
fmt.Println("the sum of the even-valued terms below 4,000,000 is", sum)
}
```

Tested on: Go Playground

References:

[1] | Even Fibonacci numbers - Problem 2 - Project Euler |