sum_of_numbers.go

package main

import "fmt"

var exampleNumbers = []int{1, 2, 3, 4, 5}

func sumOfNumbers(numbers []int) (result int) {
	for _, number := range numbers {
		result += number
	}
	return
}

func main() {
	sum := sumOfNumbers(exampleNumbers)
	fmt.Println(sum)
}

// Output:
// 15