changed wording

Author: habibasorour

source/ch4_conditionals.ptx

@@ -298,7 +298,7 @@ The <c>switch</c> statement is not used very often, and we recommend you do not
         </listing>
 
         <p>
-            This code works well, but will end with an exception if the user types anything other than a whole number (such as 12.5 or two). If we wanted to ensure the code will continue to run until the user enters the correct format, we could add <c>try-except</c> (Python) or <c>try-catch</c> (Java) blocks within a <c>while</c> loop that iterates until the user enter the correct code. <xref ref="python-square-input-exception" text="type-global"/> shows how adding <c>try-except</c> blocks and a <c>while</c> loop to the Python code will look.
+            This code works well, but will end with an exception if the user types anything other than a whole number (such as 12.5 or two). If we wanted to ensure the code will continue to run until the user enters the correct format, we could add <c>try-except</c> (Python) or <c>try-catch</c> (Java) blocks within a <c>while</c> loop that iterates until the user enter the correct code. While try-except blocks aren't strictly required in Python, <xref ref="python-square-input-exception" text="type-global"/>  shows how using them alongside a while loop makes the code more robust. 
         </p>
         <listing xml:id="python-square-input-exception">
         <program interactive="activecode" language="python">