Removed the double quote on the variable cardNuber value to make the value a number data type

Author: Tobias-Amaechina

Sprint-1/2-mandatory-errors/3.js

@@ -1,4 +1,4 @@
-const cardNumber = "4533787178994213";
+const cardNumber = 4533787178994213;
 //console.log(typeof cardNumber);
 
 const last4Digits = cardNumber.slice(-4);

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

@@ -0,0 +1,37 @@
+// Predict and explain first... /*There will be a syntax error in the code because the variable `str` is being declared twice within the same scope. The first declaration is in the function parameter, and the second declaration is inside the function body. This will cause a "SyntaxError: Identifier 'str' has already been declared" error.*?
+//  =============> write your prediction here // there will be an error message as such SyntaxError: Identifier 'str' has already been declared
+
+// call the function capitalise with a string input// capitalise("tobias");
+// interpret the error message and figure out why an error is occurring, /*
+
+/*function capitalise(str) {
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}*/
+// =============> write your explanation here
+
+
+/*/home/tobi/CYF/Module-Structuring-and-Testing-Data/Sprint-2/1-key-errors/0.js:8
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+      ^
+
+SyntaxError: Identifier 'str' has already been declared
+    at Object.compileFunction (node:vm:353:18)
+    at wrapSafe (node:internal/modules/cjs/loader:1039:15)
+    at Module._compile (node:internal/modules/cjs/loader:1073:27)
+    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
+    at Module.load (node:internal/modules/cjs/loader:989:32)
+    at Function.Module._load (node:internal/modules/cjs/loader:829:14)
+    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
+    at node:internal/main/run_main_module:17:47*/
+    // from the error message above the error occurred at line 8 where the variable `str` was declared again using `let` inside the function body, which is not allowed since `str` was already declared as a parameter of the function. 
+    // to fix this error, we can either rename the variable inside the function body or remove the `let` keyword and just assign a new value to `str` without redeclaring it.
+    
+    // =============> write your new code here 
+    function capitalise(str) {
+      str = `${str[0].toUpperCase()}${str.slice(1)}`;
+      return str;
+    }
+    capitalise("tobias");
+    console.log(capitalise("tobias")); // Output: "Tobias"
+    

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

@@ -0,0 +1,36 @@
+// Predict and explain first...
+/* There will be a syntax error in the code because the variable `decimalNumber` is being declared twice within the same scope. The first declaration is in the function parameter, and the second declaration is inside the function body. This will cause a "SyntaxError: Identifier 'decimalNumber' has already been declared" error. secondly  variable `decimalNumber` is being logged to the console outside of the function, which will also cause a ReferenceError since `decimalNumber` is not defined in that scope.*/
+
+// Why will an error occur when this program runs?/* The variable  'decimalNumber ' is being redeclared inside the function, which is not allowed since it was already declared as a parameter of the function. And the variable `decimalNumber` is being logged to the console outside of the function, which will cause a ReferenceError since `decimalNumber` is not defined in that scope.*/
+// =============> write your prediction here. // This will cause a syntax error, additionally also cause a reference error since the variable `decimalNumber` is being logged to the console outside of the function, which will also cause a ReferenceError since `decimalNumber` is not defined in that scope.
+
+
+// Try playing computer with the example to work out what is going on
+
+function convertToPercentage(decimalNumber) {
+  const decimalNumber = 0.5;
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(decimalNumber);
+
+// =============> write your explanation here
+
+// Finally, correct the code to fix the problem
+// =============> write your new code here
+
+/*/home/tobi/CYF/Module-Structuring-and-Testing-Data/Sprint-2/1-key-errors/1.js:11
+  const decimalNumber = 0.5;
+        ^
+
+SyntaxError: Identifier 'decimalNumber' has already been declared
+    at Object.compileFunction (node:vm:353:18)
+    at wrapSafe (node:internal/modules/cjs/loader:1039:15)
+    at Module._compile (node:internal/modules/cjs/loader:1073:27)
+    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
+    at Module.load (node:internal/modules/cjs/loader:989:32)
+    at Function.Module._load (node:internal/modules/cjs/loader:829:14)
+    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
+    at node:internal/main/run_main_module:17:47*/

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

@@ -0,0 +1,20 @@
+
+// Predict and explain first BEFORE you run any code...
+
+// this function should square any number but instead we're going to get an error
+
+// =============> write your prediction of the error here
+
+function square(3) {
+    return num * num;
+}
+
+// =============> write the error message here
+
+// =============> explain this error message here
+
+// Finally, correct the code to fix the problem
+
+// =============> write your new code here
+
+

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

@@ -0,0 +1,14 @@
+// Predict and explain first...
+
+// =============> write your prediction here
+
+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
+
+// Finally, correct the code to fix the problem
+//  =============> write your new code here

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

@@ -0,0 +1,13 @@
+// Predict and explain first...
+//  =============> write your prediction here
+
+function sum(a, b) {
+  return;
+  a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+
+// =============> write your explanation here
+// Finally, correct the code to fix the problem
+//  =============> write your new code here

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

@@ -0,0 +1,24 @@
+// Predict and explain first...
+
+// Predict the output of the following code:
+// =============> Write your prediction here
+
+const num = 103;
+
+function getLastDigit() {
+  return num.toString().slice(-1);
+}
+
+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
+// Explain why the output is the way it is
+// =============> write your explanation here
+// Finally, correct the code to fix the problem
+// =============> write your new code here
+
+// This program should tell the user the last digit of each number.
+// Explain why getLastDigit is not working properly - correct the problem

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

@@ -0,0 +1,19 @@
+// Below are the steps for how BMI is calculated
+
+// The BMI calculation divides an adult's weight in kilograms (kg) by their height in metres (m) squared.
+
+// For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:
+
+// squaring your height: 1.73 x 1.73 = 2.99
+// dividing 70 by 2.99 = 23.41
+// Your result will be displayed to 1 decimal place, for example 23.4.
+
+// You will need to implement a function that calculates the BMI of someone based off their weight and height
+
+// Given someone's weight in kg and height in metres
+// Then when we call this function with the weight and height
+// It should return their Body Mass Index to 1 decimal place
+
+function calculateBMI(weight, height) {
+    // return the BMI of someone based off their weight and height
+}

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

@@ -0,0 +1,16 @@
+// A set of words can be grouped together in different cases.
+
+// For example, "hello there" in snake case would be written "hello_there"
+// UPPER_SNAKE_CASE means taking a string and writing it in all caps with underscores instead of spaces.
+
+// Implement a function that:
+
+// Given a string input like "hello there"
+// When we call this function with the input string
+// it returns the string in UPPER_SNAKE_CASE, so "HELLO_THERE"
+
+// Another example: "lord of the rings" should be "LORD_OF_THE_RINGS"
+
+// 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

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

@@ -0,0 +1,6 @@
+// In Sprint-1, there is a program written in interpret/to-pounds.js
+
+// You will need to take this code and turn it into a reusable block of code.
+// 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