migration from cloud service

week4/ex2.py

@@ -0,0 +1,27 @@
+def main():
+    print('==Exercise 2==')
+    print('formula: s=3.14 * (1+a/b)^3')
+    flag = True
+    while flag:
+        a = input("pls input number a:")
+        try: 
+            a = int(a)
+            flag=False
+        except :
+            print("pls input a number!")
+    flag=True
+    while flag:
+        b = input("pls input number b:")
+        try: 
+            b = int(b)
+            flag=False
+        except :
+            print("pls input a number!")
+
+    print(f"The result for S= {3.14*(1+(a+b)**3)}")
+
+    print('==End Of Ex2==')
+    return 0
+
+if __name__ == '__main__':
+    main()