update program of 19th day

Author: albin-joseph

019-day/Program37.py

@@ -2,4 +2,20 @@
 #Higher order function is called a function that take a function as parameter and perform that function inside the function and return the result
 
 #State
-#Each Object/Instance have their on property value. This property value is call State.
+#Each Object/Instance have their on property value. This property value is call State.
+
+#Example of higher order function
+
+def add(x,y):
+    return x + y
+
+def multiply(x,y):
+    return x * y
+
+def calculator(x, y, func):
+    return func(x,y)
+
+print(calculator(3,2,add))
+print(calculator(10,5, multiply))
+
+#In the above `calculator` function is the higher order function