feat: add slice question

Author: lyle.lai

.gitignore

@@ -1,2 +1,3 @@
 .idea
 .vscode
+bin

02_array/03_q1_slice_cap/main.go

@@ -0,0 +1,13 @@
+// Package main What will eventually be output?
+// A: 5 8    B: 8 8   C: 5 5   D: 5 6
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	s := []int{1, 2}
+	s = append(s, 3, 4, 5)
+	fmt.Println(len(s), cap(s))
+}