restore Sprint-3 to upstream

Author: MattCarolus10

Sprint-3/1-key-errors/0.js

@@ -1,23 +1,13 @@
 // Predict and explain first...
-//  ======> write your prediction here: I predict that the code should cut out, and make the first letter of the string an uppercase letter,
-//  then add every letters that comes after
+//  =============> write your prediction here
 
 // call the function capitalise with a string input
 // 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: The error read "SyntaxError: Identifier 'str' has already been declared",
-//  this is as a result of having two variables with same name. The error occoured in this code because the variable "str" has been decleared twice
-
-// =============> write your new code here
-
 function capitalise(str) {
- let str2= `${str[0].toUpperCase()}${str.slice(1)}`
-  return str2;
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
 }
-console.log(capitalise("money"))
+
+// =============> write your explanation here
+// =============> write your new code here

Sprint-3/1-key-errors/1.js

@@ -1,34 +1,20 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// Answer below:
-// An error will occur for two reasons, first because there variable "decimalNumber" being decleared
-// The second reason is because the function "convertToPercentage" placeholder has no value when it was called 
-
-// =============> write your prediction here: 
-// Answer below:
-// I predicted that the code will not work because of the variable (decimalNumber) inside the function,
-// Also because the console.log function is not not calling the function "convertToPercentage" with a value
-
+// =============> write your prediction here
 
 // Try playing computer with the example to work out what is going on
 
-// function convertToPercentage(decimalNumber) {
-//   const decimalNumber = 0.5;
-//   const percentage = `${decimalNumber * 100}%`;
+function convertToPercentage(decimalNumber) {
+  const decimalNumber = 0.5;
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
 
-//   return percentage;
-// }
-// console.log(decimalNumber);
+console.log(decimalNumber);
 
 // =============> write your explanation here
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
-
-function convertToPercentage(decimalNumber) {
-  const percentage = `${decimalNumber * 100}%`;
-
-  return percentage;
-}
-console.log(convertToPercentage(10.5));

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

@@ -1,31 +1,20 @@
 
 // Predict and explain first BEFORE you run any code...
-// Answer below:
-// The code will not work because the placeholder variable (3) should be an actual name like "num"
-
 
 // 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;
-// }
+function square(3) {
+    return num * num;
+}
 
 // =============> write the error message here
-// SyntaxError: Unexpected number
 
 // =============> explain this error message here
-// The error message explains the error in the function parameter (3), the function expects a name parameter instead of a number.
 
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
 
-function square(num) {
-    return num * num;
-}
-console.log(square(10))
-
-
 

Sprint-3/2-mandatory-debug/0.js

@@ -1,25 +1,14 @@
 // Predict and explain first...
-// Answer below:
-// The code needs a value inside the console.log function to multiply, but no value was useed to replace the placeholder parameters
-// It should be an error, no value to return
 
 // =============> 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)}`);
+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
-// Answer below:
-// The code has two function parameters, it prints the parameters without an actual value. To correct this code the console.log has to be replaced with retun 
-// To return the value of the parameters when called
 
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
-
-function multiply(a, b) {
-  return a * b
-}
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 10)}`);