diff --git a/machine.py b/machine.py
new file mode 100644
index 0000000..7eb620e
--- /dev/null
+++ b/machine.py
@@ -0,0 +1,113 @@
+ice_beverage_type = ["스프라이트", "코카콜라", "솔의눈", "펩시 콜라"]
+ice_beverage_price = [1500, 1300, 1000, 1100]
+hot_beverage_type = ["TOP커피", "꿀물", "홍삼차", "단팥죽"]
+hot_beverage_price = [1800, 1500, 1700, 2100]
+
+cash_type = [50000, 10000, 5000, 1000, 500, 100]
+change_count = [0,0,0,0,0,0]
+
+chosen_beverage_type = 0   # 고객이 선택한 음료
+to_pay_money = 0   # 고객이 지불해야할 금액
+paid_money = 0     # 고객이 지불한 금액
+
+# 차가운 음료 선택
+def choose_ice_beverage():
+    print("---------------------------")
+    print("[차가운 음료]\n")
+    for i in range(4):
+        print("[",i+1,"] ",ice_beverage_type[i],":", ice_beverage_price[i],"원")
+    chosen_beverage_type = int(input("\n사용자 입력 > "))
+    to_pay_money = ice_beverage_price[chosen_beverage_type-1]
+    return chosen_beverage_type, to_pay_money   # 고른 음료 번호, 결제할 금액 반환
+
+# 뜨거운 음료 선택
+def choose_hot_beverage():
+    print("---------------------------")
+    print("[뜨거운 음료]\n")
+    for i in range(4):
+        print("[",i+1,"]",hot_beverage_type[i],":",hot_beverage_price[i],"원")
+    chosen_beverage_type = int(input("\n사용자 입력 > "))
+    to_pay_money = hot_beverage_price[chosen_beverage_type-1]
+    return chosen_beverage_type, to_pay_money    # 고른 음료 번호, 결제할 금액 반환
+
+# 현금 투입 출력
+def print_cash(paid_money):
+    print("[현금 투입] : ", paid_money,"원\n")
+    print("[1] 5만원권")
+    print("[2] 1만원권")
+    print("[3] 5천원권")
+    print("[4] 1천원권")
+    print("[5] 500원")
+    print("[6] 100원")
+    print("[0] 반환\n")
+
+# 잔돈 계산
+def calculate_changes(paid_money):
+    change = paid_money - to_pay_money
+    for i in range(len(cash_type)):
+        change_count[i] += change // cash_type[i]
+        change %= cash_type[i]
+    return change_count
+
+# 현금 결제
+def pay_in_cash(paid_money,to_pay_money):
+    while(paid_money < to_pay_money):
+        print_cash(paid_money)
+        chosen_cash_type = int(input("사용자 입력 > "))
+        if chosen_cash_type != 0:
+            paid_money += cash_type[chosen_cash_type-1]
+        else:
+            paid_money = 0
+    changes = calculate_changes(paid_money)
+    print("---------------------------")
+    print("이용해주셔서 감사합니다.\n")
+    print("[주문 음료]")
+    if ice_or_hot == 1: 
+        print(ice_beverage_type[chosen_beverage_type-1], "\n")
+    elif ice_or_hot == 2:
+        print(hot_beverage_type[chosen_beverage_type-1], "\n")
+    print("[투입 금액]")
+    print(paid_money)
+    print("\n[잔돈]")
+    for i in range(len(changes)):
+        if changes[i] != 0:
+            print(cash_type[i], ":", changes[i],"개")
+
+
+# 카드 결제
+def pay_by_card(to_pay_money):
+    print("---------------------------")
+    print("이용해주셔서 감사합니다.\n")
+    print("[주문 음료]")
+    if ice_or_hot == 1: 
+        print(ice_beverage_type[chosen_beverage_type-1], "\n")
+    elif ice_or_hot == 2:
+        print(hot_beverage_type[chosen_beverage_type-1], "\n")
+    print("[결제 금액]")
+    print(int(to_pay_money+to_pay_money*0.1),"원")
+
+
+print("[어서와요 ! GDSC 음료 자판기]")
+print("---------------------------")
+print("음료를 선택해주세요!\n")
+print("[1] 차가운 음료")
+print("[2] 따뜻한 음료\n")
+ice_or_hot = int(input("사용자 입력 > "))
+if ice_or_hot == 1:
+    chosen_beverage_type, to_pay_money = choose_ice_beverage()
+elif ice_or_hot == 2:
+    chosen_beverage_type, to_pay_money = choose_hot_beverage()
+else:
+    print("유효하지 않은 입력입니다.")
+
+print("---------------------------")
+print("[결제 방식 선택]\n")
+print("[1] 현금")
+print("[2] 카드 (부가세 10% 적용)\n")
+cash_or_card = int(input("사용자 입력 > "))
+if cash_or_card == 1:
+    pay_in_cash(paid_money,to_pay_money)
+elif cash_or_card == 2:
+    pay_by_card(to_pay_money)
+else:
+    print("유효하지 않은 입력입니다.")
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