fixed accessability colors and cleaned comments

error.go

@@ -1,10 +1,15 @@
 package main
 
-import "log"
+import (
+	"os"
+
+	"github.com/pterm/pterm"
+)
 
 func Error(err error) {
 	if err != nil {
-		log.Fatal(err)
+		pterm.Error.Println(err)
+		os.Exit(1)
 	}
 	return
 }

main.go

@@ -11,12 +11,12 @@ import (
 )
 
 func main() {
-	pterm.DefaultHeader.Println("Welcome to Checkdigit Calculator")
+	pterm.DefaultHeader.WithBackgroundStyle(pterm.NewStyle(pterm.BgCyan)).WithTextStyle(pterm.NewStyle(pterm.FgCyan)).Println("Welcome to Checkdigit Calculator")
 
 	directory, err := os.Getwd()
 	Error(err)
 
-	pterm.DefaultBasicText.Printf("What is the name of the file in this directory?: ")
+	pterm.Printf(pterm.Cyan("What is the name of the file in this directory?: "))
 	reader := bufio.NewReader(os.Stdin)
 	input, err := reader.ReadString('\n')
 	Error(err)
@@ -35,8 +35,6 @@ func main() {
 		fmt.Println(scanner.Err())
 	}
 
-	// upcProgressbar, err := pterm.DefaultProgressbar.WithTotal(len(upcs)).WithTitle("Processing UPCs").Start()
-
 	pterm.DefaultSpinner.Start()
 
 	Error(err)
@@ -108,11 +106,8 @@ func main() {
 		remainderString := strconv.Itoa(remainder)
 
 		gtins = append(gtins, upc+remainderString)
-		// upcProgressbar.Increment()
 	}
 
-	// answerProgressbar, err := pterm.DefaultProgressbar.WithTotal(len(gtins)).WithTitle("Processing UPCs").Start()
-
 	if _, err := os.Stat(directory + "/answer.txt"); err == nil {
 		e := os.Remove(directory + "/answer.txt")
 		Error(e)
@@ -126,10 +121,10 @@ func main() {
 	for _, gtin := range gtins {
 		_, err := answerFile.WriteString(gtin + "\n")
 		Error(err)
-		// answerProgressbar.Increment()
 	}
 
 	pterm.DefaultSpinner.Stop()
 
-	pterm.DefaultBasicText.Println("The answer.txt file has been successfully generated with check digits.")
+	pterm.Println("\n")
+	pterm.Success.Println("The answer.txt file has been successfully generated with check digits.")
 }