Solution: mandatory-interpret, 1

Author: bytesandroses

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 +12,18 @@ 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
+// Answer: 4 in total (on lines 4 and 5)
 
 // 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?
+// Prediction: it will generate an error. This is because the replaceAll function isn't syntactically correct as there is a comma separator missing
+// After running: error identified on Line 5 (priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));)
 
 // c) Identify all the lines that are variable reassignment statements
+// Answer: Lines 4 and 5
 
 // d) Identify all the lines that are variable declarations
+// Answer: Lines 1, 2, 7, and 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// Answer: It takes the string and replaces all instances of the comma "," with an empty space "". For example, the string "10,000,000"
+// gets turned to "10000000"