handled words in files

main.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"regexp"
 	"strconv"
 	"strings"
 
@@ -41,6 +42,9 @@ func main() {
 
 	var gtins []string
 
+	regex, err := regexp.Compile("[^0-9]")
+	Error(err)
+
 	for _, upc := range upcs {
 
 		upcLength := len(upc)
@@ -57,6 +61,13 @@ func main() {
 		evenNumber := 0
 		var remainder int
 
+		checkForNonNumber := regex.MatchString(upc)
+
+		if checkForNonNumber {
+			gtins = append(gtins, upc)
+			continue
+		}
+
 		if upcLength < 8 {
 			gtins = append(gtins, "Cannot process upcs less than 8 digits")
 			continue