3-mandatory-implement questions answered

Author: bartoszkawiak

Sprint-3/3-mandatory-implement/1-bmi.js

@@ -17,7 +17,22 @@
 function calculateBMI(weight, height) {
   let bmiNum = weight / (height * height);
   bmiNum = bmiNum.toFixed(1);
-  return bmiNum;
+  return typeof bmiNum;
 }
 
 console.log(calculateBMI(70, 1.73));
+
+// What type of value do you expect your function to return? A number or a string?
+//I expect function to return string as required, toFixed() change the type of number to a string.
+
+// Does your function return the type of value you expect?
+//Yes I did expect a string returned.
+
+// Different types of values may appear identical in the console output, but they are represented and treated differently in the program. For example,
+
+//   console.log(123);              // Output 123(number)
+//   console.log("123");            // Output 123(string)
+
+//   // Treated differently in the program
+//   let sum1 = 123 + 100;         // Evaluate to 223 -- a number
+//   let sum 2 = "123" + 100;      // Evaluate to "123100" -- a string.