diff --git a/main.go b/main.go
index 9881d9e..c8f0781 100644
--- a/main.go
+++ b/main.go
@@ -3,22 +3,19 @@ package main
 import "fmt"
 
 func main() {
-	var a [5]int
-	//普通for循环
-	for i := 0; i < len(a); i++ {
-		fmt.Printf("输入第%d位学生的成绩：", i+1)
-		_, err := fmt.Scanln(&a[i])
-		if err != nil {
-			return
-		}
-	}
-	//for range循环
-	for a, b := range a {
-		fmt.Printf("第%d个学生成绩为%d\n", a, b)
-	}
-	Grades := 1
-	for _, b := range a {
-		Grades = Grades + b
-	}
-	fmt.Printf("平均成绩为%d", Grades/len(a))
+	var intarr = [6]int{1, 2, 3, 4, 5, 6}
+	slice := intarr[2:5]
+	fmt.Println("intarr:", intarr)
+	fmt.Println("slice:", slice)
+	fmt.Println("slice len:", len(slice))
+	fmt.Println("slice cap:", cap(slice))
+
+	fmt.Printf("数组中下标为3位置的地址%p\n", &intarr[3])
+	fmt.Printf("切片中下标为1位置的地址%p\n", &slice[1])
+
+	//修改切片位置1的数值
+	slice[1] = 16
+	fmt.Println("intarr:", intarr)
+	fmt.Println("slice:", slice)
+
 }