ADDED: Validator to validate the operations entered for calculations

hasithachamod · hasithachamod · commit 228e2aa6b0d8 · 2018-10-02T22:27:45.000+05:30
diff --git a/Simple Calculator.py b/Simple Calculator.py
@@ -3,7 +3,7 @@
 operation = ""
 num2 = ""
 num1 = input("Hello, What is your First Number?\n")
-operation = input("Operation?\n")
+operation = input("Operation (+, -, *, /)?\n")
 num2 = input("Your Second Number?\n")
 
 floatnum1 = float(num1)
@@ -17,5 +17,7 @@
     output=floatnum1*floatnum2
 if operation == "/":
     output=floatnum1/floatnum2
-
-print("Your Answer: "+str(output))
+if operation == "+" or operation == "-" or operation == "/" or operation == "*":
+    print("Your Answer: "+str(output))
+else:
+    print("Your operation is invalid, please try again")
