add structs

structs/go.mod

@@ -0,0 +1,3 @@
+module structs
+
+go 1.17

structs/main.go

@@ -0,0 +1,35 @@
+package main
+
+import "fmt"
+
+type contactInfo struct {
+	email   string
+	zipCode int
+}
+
+type person struct {
+	firstName string
+	lastName  string
+	contactInfo
+}
+
+func main() {
+	person1 := person{
+		firstName: "Bert",
+		lastName:  "Bertrandt",
+		contactInfo: contactInfo{
+			email:   "asd@bsd.de",
+			zipCode: 1234,
+		},
+	}
+	(&person1).updateName("asd")
+	person1.print()
+}
+
+func (p *person) updateName(newFirstName string) {
+	(*p).firstName = newFirstName
+}
+
+func (p person) print() {
+	fmt.Printf("%+v", p)
+}