From 2a2139caeb32cbf5c86b9da4db8706aa59653fd6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mert=20G=C3=B6r?= <mertgor@masscollabs.xyz>
Date: Mon, 22 Jan 2024 09:03:58 +0300
Subject: [PATCH] area calculated

---
 interfaces/demo1.go | 38 ++++++++++++++++++++++++++++++++++++++
 main.go             |  3 +++
 2 files changed, 41 insertions(+)
 create mode 100644 interfaces/demo1.go

diff --git a/interfaces/demo1.go b/interfaces/demo1.go
new file mode 100644
index 0000000..7bdc511
--- /dev/null
+++ b/interfaces/demo1.go
@@ -0,0 +1,38 @@
+package interfaces
+
+import (
+	"fmt"
+	"math"
+)
+
+type shape interface{
+	area() float64
+}
+
+type rectangle struct{
+	rectangle_width, rectangle_height float64
+}
+
+type circle struct{
+	radius float64
+}
+
+func (r rectangle) area() float64{
+	return r.rectangle_height * r.rectangle_width
+}
+
+func (c circle) area() float64 {
+	return math.Pi * c.radius * c.radius
+}
+
+func school(s shape)  {
+	fmt.Println("Area : ", s.area())
+}
+
+func Demo1()  {
+	r:= rectangle{
+		rectangle_width: 10, rectangle_height: 6,
+	}
+
+	school(r)
+}
\ No newline at end of file
diff --git a/main.go b/main.go
index 5a3f86d..d3ab7a9 100644
--- a/main.go
+++ b/main.go
@@ -8,6 +8,7 @@ import (
 	"golesson/examplerange"
 	"golesson/functions"
 	"golesson/goroutines"
+	"golesson/interfaces"
 	"golesson/loops"
 	"golesson/maps"
 	"golesson/pointers"
@@ -75,4 +76,6 @@ func main() {
 	multiply := EvenNumberTotal * OddNumberTotal
 
 	fmt.Println("Multiply Result : ", multiply)
+
+	interfaces.Demo1()
 }