'init'

main/defers.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+)
+
+func t() error {
+	a := 10
+	b := 5
+	if b == 0 {
+
+		return errors.New("除数不能为零")
+
+	} else {
+		res := a / b
+		fmt.Println(res)
+
+		return nil
+	}
+}
+func main() {
+	err := t()
+	if err != nil {
+		fmt.Println("自定义错误")
+		//停止后面程序继续执行
+		panic(err)
+	}
+	fmt.Println("继续执行")
+
+	var scores [5]int
+	scores[0] = 10
+	scores[1] = 10
+	scores[2] = 30
+	scores[3] = 40
+	for i := 0; i < len(scores); i++ {
+		fmt.Println(scores[i])
+		fmt.Scanln(&scores[i])
+	}
+	//索引用key接收 value用于里面的值
+	for key, value := range scores {
+		fmt.Println(key, value)
+
+	}
+}