Interpret part completed

Author: alizada-dev

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,11 +12,20 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+        // There are 4 function calls.
+        // In line 4: Number() and replaceAll() are function calls.
+        // In line 5: Number() and replaceAll() are function calls.
+        // Including console.log(), there are 5 function calls.
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+        // The syntax error was in line 5; a comma was missing
 
 // c) Identify all the lines that are variable reassignment statements
+        // Variable reassignment statements are in lines 4 and 5
 
 // d) Identify all the lines that are variable declarations
+        // 1, 2, 7, 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+        // First, it removes the digit group separator. // "10,000" => "10000"
+        // Then, the Number() method changes the string to a number. // "10000" => 10000

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -12,14 +12,21 @@ console.log(result);
 // For the piece of code above, read the code and then answer the following questions
 
 // a) How many variable declarations are there in this program?
+        // There are 6 variable declarations
 
 // b) How many function calls are there?
+        // There are no function calls except console.log(result);
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
+        // 'movieLength % 60' finds out the remainder seconds which is 24
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+        // It subtracts the remaining seconds from movieLength and finally divides by 60 to get the length in minutes
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+        // It stores the total movie length in HH:MM:SS format.
+        // I can name it totalRuntime;
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+        // Yes, the code works for all values. 6000 would be 1:40:0, for example

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

@@ -1,20 +1,32 @@
 const penceString = "399p";
 
+// substring() method returns a portion of a string
+// In the variable below, it returns "399" and penceString.length - 1 removes the last character ("p")
 const penceStringWithoutTrailingP = penceString.substring(
   0,
   penceString.length - 1
 );
 
+// Although pasStart() method does not seem necessary here, but this method gives a padding to a string from start
+// so the "399" has a given length of 3
 const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+// substring() method returns a portion of a string
+// In this case, it return only "3" which is the Pound
+// and 'paddedPenceNumberString.length - 2' removes "99" which represents the pence
 const pounds = paddedPenceNumberString.substring(
   0,
   paddedPenceNumberString.length - 2
 );
 
+// substring() method removes "3" from "399" and returns "99";
+// padEnd() method pads the "99" and the padding applied is from the end of this string.
 const pence = paddedPenceNumberString
   .substring(paddedPenceNumberString.length - 2)
   .padEnd(2, "0");
 
+
+// In the log, backticks are used to output template literals ${pounds} and ${pence} with added '£' sign.
 console.log(`£${pounds}.${pence}`);
 
 // This program takes a string representing a price in pence