Added support for multiple flags with file input

main.go

@@ -160,22 +160,24 @@ func main() {
 		byteCounter = fileByteCounter
 	}
 
-	switch {
-	case *cFlag:
-		fmt.Print("\t", byteCounter(f))
-	case *lFlag:
+	if *lFlag || flag.NFlag() == 0 {
 		fmt.Print("\t", lineCounter(f))
-	case *wFlag:
+		f.Seek(0, 0)
+	}
+
+	if *wFlag || flag.NFlag() == 0 {
 		fmt.Print("\t", wordCounter(f))
-	case *mFlag:
-		fmt.Print("\t", charCounter(f))
-	default:
-		b := byteCounter(f)
 		f.Seek(0, 0)
-		l := lineCounter(f)
+	}
+
+	if *cFlag || flag.NFlag() == 0 {
+		fmt.Print("\t", byteCounter(f))
+		f.Seek(0, 0)
+	}
+
+	if *mFlag {
+		fmt.Print("\t", charCounter(f))
 		f.Seek(0, 0)
-		w := wordCounter(f)
-		fmt.Print("\t", l, "\t", w, "\t", b)
 	}
 
 	if len(fileName) > 0 {