Create reusable toPounds function from Sprint-1 code

Author: HoussamLh

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -1,7 +1,22 @@
-// Define a function that converts kilograms to pounds
-function toPounds(kg) {
-  const pounds = kg * 2.20462;
-  return Number(pounds.toFixed(2)); // return as number, not string
+function toPounds(penceString) {
+  const penceStringWithoutTrailingP = penceString.substring(0, penceString.length - 1);
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  );
+
+  const pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+
+  return `£${pounds}.${pence}`;
 }
 
-module.exports = toPounds;
+// Test calls
+console.log(toPounds("399p"));   // Output: £3.99
+console.log(toPounds("5p"));     // Output: £0.05
+console.log(toPounds("45p"));    // Output: £0.45
+console.log(toPounds("999p"));   // Output: £9.99
+console.log(toPounds("2p"));     // Output: £0.02