diff --git a/bank.py b/bank.py
new file mode 100644
index 0000000..fb871eb
--- /dev/null
+++ b/bank.py
@@ -0,0 +1,11 @@
+class Bank:
+    clients=[]
+    def __init__(self,name):
+        self.name=name
+    def add_client(self,client):    
+        self.clients.append(client) 
+    def authentication(self,name,account_number):
+        pass
+    def clients(self):
+        print(self.clients)
+
diff --git a/bank_classdiagram.png b/bank_classdiagram.png
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diff --git a/bank_usecase.png b/bank_usecase.png
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diff --git a/class_diagrm.png b/class_diagrm.png
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diff --git a/client.py b/client.py
new file mode 100644
index 0000000..0981854
--- /dev/null
+++ b/client.py
@@ -0,0 +1,25 @@
+import random
+class client:
+    def __init__(self,account_number,name,total_amount):
+        self.account_number=random(5)
+        self.name=name
+        self.total_amount=random(5)
+
+    def deposit(self):
+        amount = float(input("Enter amount to be deposited: "))
+        self.total_amount += amount
+        print("\n Amount Deposited:", amount)
+    
+    def withdraw(self):
+        amount = float(input("Enter amount to be withdrawn: "))
+        if self.total_amount >= amount:
+            self.total_amount -= amount
+            print("\n You Withdraw:", amount)
+        else:
+            print("\n Insufficient balance  ")
+
+    def balance(self):
+        print(self.total_amount)
+    
+
+
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..bf1f44b
--- /dev/null
+++ b/main.py
@@ -0,0 +1,21 @@
+from bank import Bank
+from client import client
+class main(Bank):
+    bank=Bank("firdevs")
+    def loop(self):
+        while True:
+            temp = input(f"""This is 's account:
+    1) deposit
+    2) witdraw
+    3) get balance
+""")
+            if temp == '1':
+                client.deposit()
+            elif temp == '2':
+                client.withdraw()
+            elif temp == '3':
+                client.balance()
+            else:
+                print("Please enter a valid option!")
+
+a=main
diff --git a/use_case.png b/use_case.png
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