Implement toPounds function to convert pence to pounds and add test cases

Author: MohammedNaru

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

@@ -4,3 +4,31 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+function toPounds(penceString) {
+  // normalize input to a trimmed string
+  const input = String(penceString).trim();
+
+  // remove trailing 'p' if present
+  const numericPart = input.endsWith('p') ? input.slice(0, -1) : input;
+
+  // ensure at least 3 digits so we can safely split into pounds / last two pence
+  const padded = numericPart.padStart(3, '0');
+
+  // all but the last two digits are pounds
+  const pounds = padded.slice(0, padded.length - 2);
+
+  // last two digits are pence; ensure two chars
+  const pence = padded.slice(-2).padEnd(2, '0');
+
+  return `£${pounds}.${pence}`;
+}
+
+// Test calls
+console.log(toPounds("399p"));   // £3.99
+console.log(toPounds("5p"));     // £0.05
+console.log(toPounds("75p"));    // £0.75
+console.log(toPounds("0p"));     // £0.00
+console.log(toPounds("1234p"));  // £12.34
+console.log(toPounds(" 42p "));  // £0.42  (works with extra whitespace)
+console.log(toPounds("500"));    // £5.00  (works without trailing 'p')