West Midlands | MAY | EMIN AKTURK | Sprint 2 | MODULE-STRUCTURING-AND-TESTING-DATA

Sprint-2/1-key-errors/0.js

@@ -1,13 +1,28 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// I predict the code is for capitalising the first letter of a string.
+
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
-function capitalise(str) {
+// the error is "The symbol "str" has already been declared."
+
+/* function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
-
+*/
 // =============> write your explanation here
+// Error occurs because the str was mentioned as a parameter in the definition which is already a variable name in the function body.
+
 // =============> write your new code here
+
+function capitalise(str) {
+  const capitalisedStr = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return capitalisedStr;
+}
+
+// to call the function : 
+
+console.log(capitalise("naber?")); // Output: "Naber?"

Sprint-2/1-key-errors/1.js

@@ -1,7 +1,8 @@
 // Predict and explain first...
+// program is made for converting a decimal number into a percentage.
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// =============> I think error would occur because decimalNumber is declared twice.
 
 // Try playing computer with the example to work out what is going on
 
@@ -14,7 +15,15 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> write your explanation here
+// =============> to fix the problem I will remove the second declaration of decimalNumber and use the parameter instead.
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> 
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+} 
+
+// to call the function
+console.log(convertToPercentage(1)); // Output: "100%"

Sprint-2/1-key-errors/2.js

@@ -3,18 +3,24 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// =============> My prediction is that error occurs because function trying to use a number as a function.
 
 function square(3) {
     return num * num;
 }
 
-// =============> write the error message here
+// =============> Expected identifier but found "3"
 
-// =============> explain this error message here
+// =============> While program waiting for an identifier, it found a number instead.
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
+// =============> 
+    function square(num) {
+        return num * num;
+    }
+
+    // to call the function
+    console.log(square(9)); // Output: 81
 
 

Sprint-2/2-mandatory-debug/0.js

@@ -1,14 +1,21 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// =============> My prediction is code wont return anything because the function does not have a return statement.
 
-function multiply(a, b) {
+/* function multiply(a, b) {
   console.log(a * b);
 }
 
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
-
-// =============> write your explanation here
+console.log(`The result of multiplying 10 and 32 is `${multiply(10, 32)}`);
+*/
+// =============> Once return statement is added, it will return the result of the multiplication.
 
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+//  =============> 
+
+  function multiply(a,b) 
+{
+return a*b;
+}
+
+console.log(`result of multiplying 2 times 2 = ${multiply(2, 2)}`);

Sprint-2/2-mandatory-debug/1.js

@@ -1,13 +1,20 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> Problem here is that sum does not return no value because return statement and a + b is in different lines.
 
-function sum(a, b) {
+/*function sum(a, b) {
   return;
   a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
-
-// =============> write your explanation here
+*/
+// =============> Once we put a + b back in return statement it will work with no problem.
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+function sum(a, b) 
+{
+  return a + b;
+}
+
+console.log(`The sum of 45 and 12 is ${sum(45, 12)}`); // Output: "The sum of 45 and 12 is 57"

Sprint-2/2-mandatory-debug/2.js

@@ -1,9 +1,9 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> output would be undefined because getLastDigit uses global variable num.
 
-const num = 103;
+/* const num = 103;
 
 function getLastDigit() {
   return num.toString().slice(-1);
@@ -12,13 +12,20 @@ function getLastDigit() {
 console.log(`The last digit of 42 is ${getLastDigit(42)}`);
 console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
-
+*/
 // Now run the code and compare the output to your prediction
-// =============> write the output here
+// =============> Program is returning 3 for all console.log's.
 // Explain why the output is the way it is
-// =============> write your explanation here
+// =============> Num is defined to 103 which is global so anytime program calls getLastDigit it returns 3.
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> 
+
+  function getLastDigit(num) 
+  {
+    return num.toString().slice(-1);
+  }
+
+  console.log(`The last digit of 41 is ${getLastDigit(41)}`);
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -14,6 +14,11 @@
 // Then when we call this function with the weight and height
 // It should return their Body Mass Index to 1 decimal place
 
+const weight = 103;
+const height = 1.87;
+
 function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
-}
+    return calculatedBMI = (weight / (height * height)).toFixed(1);
+}
+
+console.log(`the BMI of the person is ${calculateBMI(weight, height)}`);

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,3 +14,11 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+
+function magicToUpperCase(input)
+{
+    return input.toUpperCase().replaceAll(" ", "_");
+
+}
+
+console.log(magicToUpperCase("lord of the rings"));

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

@@ -4,3 +4,28 @@
 // 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(penceCount) {
+
+const penceWithoutP = penceCount.substring(
+  0,
+  penceCount.length - 1
+);
+
+const paddedPenceNumber = penceWithoutP.padStart(3, "0");
+const pounds = paddedPenceNumber.substring(
+  0,
+  paddedPenceNumber.length - 2
+);
+
+const pence = paddedPenceNumber
+  .substring(paddedPenceNumber.length - 2);
+
+
+const formattedPounds = pounds || "0";
+
+return `£${formattedPounds}.${pence}`;
+}
+
+console.log(`The amount in pounds is ${toPounds("10000000")}`);