wraps sprint-1 logic in reusable function

Author: remimarcelle

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

@@ -4,3 +4,41 @@
 // 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
+
+// const penceString = "399p";
+
+// removed the hardcoded penceString and replaced with a parameter
+// called penceString
+function toPounds(penceString) { // penceString is now a parameter, not
+    // a hardcoded variable
+
+// the rest of the code remains unchanged, but it is now inside the
+// toPounds function, and it uses the penceString parameter instead
+// of the hardcoded variable.
+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);
+
+// the old console.log statement is removed and replaced with a return
+// stateement that returns the formmated string with the pounds and pence.
+    return `£${pounds}.${pence}`;
+}
+
+// console.log(`£${pounds}.${pence}`);
+
+// the function toPounds can now be called with different pence strings 
+// to test its functionality.
+console.log(toPounds("399p")); // £3.99
+console.log(toPounds("5p"));   // £0.05
+console.log(toPounds("1234p")); // £12.34
+