func (a *ATM) showBalance(c card.Carder) int {
	Name, BranchName := card.GetBankInfo(c)
	balance := bank.GetBalance(banks[BranchName], Name)
	fmt.Printf("    Hi %v, you are at ATM %v and you have %v in your account at bank %v\n", Name, a.Name, balance, BranchName)
	return balance
}
***************************************************************************************************
showBalance shows balance
package atm
import (
	"fmt"
	"github.com/JeffDeCola/my-go-examples/basic-syntax/interfaces/interfaces-card-atm-bank/bank"
	"github.com/JeffDeCola/my-go-examples/basic-syntax/interfaces/interfaces-card-atm-bank/card"
)
type ATM struct {
	Name string
}