Example of importing packages in Golang

addition_withpackage.go

package main

import "fmt"
import "github.com/cjgiridhar/mathematics"

/*func add(a, b int) int {
  return a+b
}*/

func main() {
  sum := mathematics.Add(4, 5)
  fmt.Printf("Hello, Gopher! Your result is %d\n", sum)
}