add functions to calculator

Author: aullanisa

calculator.py

@@ -11,6 +11,16 @@ def divide(a,b):
 	return a/b
 
 
-print("I'm going use the calculator functions to multiply 5 and 6")
-x = multiply(5,6)
-print(x)
+
+def square(a):
+	return a * a
+
+
+def cube(a):
+	return a * a * a
+
+
+if __name__ == "__main__":
+	print("I'm going to use the calculator functions to multiply 5 and 6")
+	x = multiply(5, 6)
+	print(x)