使用GolLand时无法在CMD终端上运行同一程序，但运行正常

When I am using GoLand to run my program, everything works fine, just like what I expected. But, my program does not work well when I try to manually run it in CMD terminal.

The command line I used to run my program was "go run c.go" where c.go is my source file.

Here is the correct result from GoLand:

Where the green numbers are the inputs from stdin.

Meanwhile with the terminal:

The program failed after I input "-1" into stdin.

Here is the code:

func IterElements(numElement int, elements []string) int {
if numElement == 0 {
    return 0
}

//********************************

var e = elements[0] //Line 22

//********************************

number, err := strconv.Atoi(e)
if err != nil {
    //fmt.Println(err)
    //os.Exit(2)
}

numElement--
if number<0{
    return IterElements(numElement, elements[1:])
}else {
    return number*number + IterElements(numElement, elements[1:])
}}

It converts a string from elements-array to an integer and calculates its square, and sum the squared numbers iteratively.

Any help? Thank you!

Update: Full Code in Playground

https://play.golang.org/p/0ksctGHWM1R