diff --git a/main.go b/main.go
index 4433889..6315cef 100644
--- a/main.go
+++ b/main.go
@@ -127,4 +127,5 @@ func main() {
 	error_handling.Demo2()
 	fmt.Println(error_handling.GuessIt2(102))
 	string_functions.Demo1()
+	string_functions.Demo2()
 }
diff --git a/string_functions/demo2.go b/string_functions/demo2.go
new file mode 100644
index 0000000..8404969
--- /dev/null
+++ b/string_functions/demo2.go
@@ -0,0 +1,32 @@
+package string_functions
+
+//alias
+import (
+
+	"fmt"
+
+	s "strings"
+)
+
+func Demo2()  {
+	name := "Engin"
+	fmt.Println(s.HasPrefix(name, "Eng")) // true 
+	fmt.Println(s.HasSuffix(name, "in")) // true
+	fmt.Println(s.Index(name, "in")) // index starts from 0 / zero
+
+	letters := []string{"e", "n", "g","i","n"}
+	fmt.Println(s.Join(letters, "*"))
+	result := s.Join(letters, "*")
+	fmt.Println(result)
+
+	fmt.Println(s.Replace(result, "*", "+", -1))
+	fmt.Println(s.Replace(result, "*", "+", 3))
+
+	// For banking : ID Number : 123123121, Date: 02022021, Amount : 5999
+
+	fmt.Println(s.Split(result, "*"))
+	fmt.Println(len(s.Split(result, "*")))
+	fmt.Println(s.Split(result, "-"))
+	fmt.Println(s.Repeat(result, 5))
+
+}
\ No newline at end of file