kk

spec_course/Lec18/figure/go.mod

@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4

spec_course/Lec18/figure/main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+type Cicle struct {
+	radius int
+}
+
+type Rectangle struct {
+	lenght,width int
+}
+
+func (circle Cicle) Perim() float64 {
+	return float64(circle.radius) * math.Pi
+}
+
+
+func main() {
+	c := Cicle{
+		radius: 3,
+	}
+	fmt.Println(c.Perim())
+}