From bf3971bd133cde19abe17f706b8c1a06626b5b92 Mon Sep 17 00:00:00 2001
From: Martin Schmollinger <martin.schmollinger@reutlingen-university.de>
Date: Fri, 7 Apr 2023 18:37:53 +0200
Subject: [PATCH] Solution to exercise of unit 03-04
---
exercise_0304/go.mod | 3 +++
exercise_0304/main.go | 37 +++++++++++++++++++++++++++++++++++++
2 files changed, 40 insertions(+)
create mode 100644 exercise_0304/go.mod
create mode 100644 exercise_0304/main.go
diff --git a/exercise_0304/go.mod b/exercise_0304/go.mod
new file mode 100644
index 0000000..3c219f0
--- /dev/null
+++ b/exercise_0304/go.mod
@@ -0,0 +1,3 @@
+module gitlab.reutlingen-university.de/go-exercises/go-starter/exercise_0303
+
+go 1.20
diff --git a/exercise_0304/main.go b/exercise_0304/main.go
new file mode 100644
index 0000000..514802a
--- /dev/null
+++ b/exercise_0304/main.go
@@ -0,0 +1,37 @@
+package main
+
+import "fmt"
+
+type Areaer interface {
+ Area() int
+}
+
+type Rectangle struct {
+ length int
+ width int
+}
+
+func (r Rectangle) Area() int {
+ return r.length * r.width
+}
+
+func (r *Rectangle) SetWidth(width int) {
+ r.width = width
+}
+
+func (r Rectangle) String() string {
+ return fmt.Sprintf("{l: %d, w: %d}", r.length, r.width)
+}
+
+func createShape() Areaer {
+ return Rectangle{length: 10, width: 5}
+}
+
+func main() {
+ r := Rectangle{length: 10, width: 5}
+ r.SetWidth(9)
+ fmt.Println(r.Area())
+ s := createShape()
+ fmt.Println(s.Area())
+ fmt.Println(r)
+}
--
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