diff --git a/src/pkg/strings/example_test.go b/src/pkg/strings/example_test.go
index 733caf5..36e0a42 100644
--- a/src/pkg/strings/example_test.go
+++ b/src/pkg/strings/example_test.go
@@ -179,3 +179,19 @@
 	fmt.Println(strings.ToLower("Gopher"))
 	// Output: gopher
 }
+
+func ExampleTrimSuffix() {
+	var s = "Hello, goodbye, etc!"
+	s = strings.TrimSuffix(s, "goodbye, etc!")
+	s = strings.TrimSuffix(s, "planet")
+	fmt.Print(s, "world!")
+	// Output: Hello, world!
+}
+
+func ExampleTrimPrefix() {
+	var s = "Goodbye,, world!"
+	s = strings.TrimPrefix(s, "Goodbye,")
+	s = strings.TrimPrefix(s, "Howdy,")
+	fmt.Print("Hello" + s)
+	// Output: Hello, world!
+}