diff --git a/CodeStarterCamp_Week3/CoffeeShop.swift b/CodeStarterCamp_Week3/CoffeeShop.swift
new file mode 100644
index 00000000..bfe6cdd4
--- /dev/null
+++ b/CodeStarterCamp_Week3/CoffeeShop.swift
@@ -0,0 +1,55 @@
+import Foundation
+
+enum Coffee: String {
+    case americano = "아메리카노"
+    case cafeLatte = "카페라떼"
+    case cappuccino = "카푸치노"
+
+    var orderMenu: String {
+        return self.rawValue
+    }
+}
+
+class Person {
+    var name: String = ""
+    var money: Int = 0
+
+    func order(_ coffee: Coffee, of coffeeShop: CoffeeShop, by name: String) {
+        if let price = coffeeShop.menu[coffee] {
+            if money >= price {
+                money -= price
+                print("\(name)님이 \(price)원에 \(coffee.orderMenu)를 결제했습니다.")
+                coffeeShop.make(coffee, from: name)
+            } else {
+                print("\(name)님의 잔액이 부족하여 \(coffee.orderMenu)를 구매하실 수 없습니다.")
+                print("잔액이 \(price - money)원만큼 부족합니다.")
+            }
+        } else {
+            print("\(coffee.orderMenu)는 카페에서 판매하지 않습니다.")
+        }
+    }
+}
+
+class CoffeeShop {
+    var shopName: String = ""
+    var menu: [Coffee: Int] = [:]
+    var revenue: Int = 0
+    var pickUpTable: [Coffee] = []
+    var barista: Person?
+
+    func assignBarista(barista: Person) {
+        self.barista = barista
+        print("\(shopName)을 담당하는 바리스타는 \(barista.name)입니다.")
+    }
+    
+    func make(_ coffee: Coffee, from name: String) {
+        if let price = menu[coffee] {
+            revenue += price
+            pickUpTable.append(coffee)
+            print("바리스타 \(barista?.name ?? "바리스타")가 \(coffee.orderMenu)를 만들어 픽업 테이블에 올려놨습니다.")
+            print("\(name)님이 주문하신 \(coffee.orderMenu)(이/가) 준비되었습니다. 픽업대에서 가져가주세요.")
+        } else {
+            print("\(coffee.orderMenu)는 메뉴에 없습니다.")
+        }
+    }
+}
diff --git a/CodeStarterCamp_Week3/main.swift b/CodeStarterCamp_Week3/main.swift
index feb6d999..1ab78e61 100644
--- a/CodeStarterCamp_Week3/main.swift
+++ b/CodeStarterCamp_Week3/main.swift
@@ -8,5 +8,27 @@
 
 import Foundation
 
-print("Hello, World!")
+let misterLee = Person()
+misterLee.name = "misterLee"
+misterLee.money = 3000
 
+let missKim = Person()
+missKim.name = "missKim"
+missKim.money = 20000
+
+let menu: [Coffee: Int] = [
+    .americano: 5000,
+    .cafeLatte: 6000,
+    .cappuccino: 7000
+]
+
+let yagombucks = CoffeeShop()
+yagombucks.shopName = "yagombucks"
+yagombucks.menu = menu
+
+yagombucks.assignBarista(barista: misterLee)
+missKim.order(.cafeLatte, of: yagombucks, by: missKim.name)
+misterLee.order(.americano, of: yagombucks, by: misterLee.name)
+
+print("\(yagombucks.shopName)의 매출액: \(yagombucks.revenue)원")
+print("픽업 테이블에 있는 커피: \(yagombucks.pickUpTable.map { $0.orderMenu }.joined(separator: ", "))")