completed_3-to-pounds.js

Author: Elisabeth-Matulian

Sprint-1/3-mandatory-interpret/3-to-pounds.js

@@ -1,12 +1,12 @@
 const penceString = "399p";
 
-const penceStringWithoutTrailingP = penceString.substring(
+const penceStringWithoutTrailingP = penceString.substring( // 399
   0,
   penceString.length - 1
 );
 
-const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
-const pounds = paddedPenceNumberString.substring(
+const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); //399
+const pounds = paddedPenceNumberString.substring( //3
   0,
   paddedPenceNumberString.length - 2
 );
@@ -23,5 +23,10 @@ console.log(`£${pounds}.${pence}`);
 // You need to do a step-by-step breakdown of each line in this program
 // Try and describe the purpose / rationale behind each step
 
-// To begin, we can start with
-// 1. const penceString = "399p": initialises a string variable with the value "399p"
+
+//3. This line truncates the string by index, excluding the last character, without the letter p. 
+//8. This line is needed in case the variable length is shorter than 3 characters. If the variable value is less than 1 pound, calling the padStart() function guarantees that there are 3 characters so that we can later convert pence to the 0.00 format (we will add the decimal point later).
+//9. saves the entire string except for the last 2 characters, i.e. the number of pounds
+//14. saves the value of the last two characters, i.e. the number of pence
+//18. this line outputs the final value in the standard format £0.00
+