London | 26-ITP-May | Rizqah Popoola | Sprint 2 | Coursework

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

@@ -1,13 +1,16 @@
 // Predict and explain first...
-//  =============> write your prediction here
-
-// call the function capitalise with a string input
+//  =============> We use a string template when we want to join different character sets together but by casing the first letter
+// to uppercase we're assuming that it is formed of letters
 // 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
-// =============> write your new code here
+// Te error message says 'str' has already been declared so we can use another name for our 
+//output to solve that error we change the output variable name
+// function capitalise(str) {
+ // let str1 = `${str[0].toUpperCase()}${str.slice(1)}`;
+ // return str1;
+//}

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

@@ -1,20 +1,24 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// The parameter is a constant which means the program will output the same thing everytime, 
+//and would give an error message saying it has been declared if run.
 
 // 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);
+ return percentage;
 
-// =============> write your explanation here
+ console.log(decimalNumber);
+}
+// =============> Our parameter has already been declared which is why the program is resulting in an error
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+//function convertToPercentage(decimalNumber) {
+  //return `${decimalNumber * 100}%`;
+
+//}
+//console.log(convertToPercentage(0.5));

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

@@ -1,20 +1,25 @@
 
 // Predict and explain first BEFORE you run any code...
-
+//We are going to get an error because an integer cannot be a parameter, it has to be a variable.
 // this function should square any number but instead we're going to get an error
 
 // =============> write your prediction of the error here
+//syntaxERror, identifier cannot be an integer
 
 function square(3) {
     return num * num;
 }
 
 // =============> write the error message here
+// Uncaught SyntaxError SyntaxError: Unexpected number
 
 // =============> explain this error message here
-
+//The program was expecting a function parameter but got a number instead
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
+//function square(num) {
+ //   return num * num;
+//}
 
 

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

@@ -1,7 +1,8 @@
 // Predict and explain first...
 
 // =============> write your prediction here
-
+//This won't work because we are not returning anything.
+
 function multiply(a, b) {
   console.log(a * b);
 }
@@ -11,4 +12,9 @@ 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
+//function multiply(a, b) {
+//return a * b;
+//}
+
+//console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 //  =============> write your new code here

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

@@ -1,5 +1,6 @@
 // Predict and explain first...
 //  =============> write your prediction here
+//This won't work because of a  syntax error, return a+b should be on a single line and not on separate lines
 
 function sum(a, b) {
   return;
@@ -9,5 +10,11 @@ function sum(a, b) {
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// The sum of a + b is undefined because we are not returning any value
 // 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 10 and 32 is ${sum(10, 32)}`);

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

@@ -1,7 +1,8 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> Write your prediction 
+//It should output string cannot be accessed because we are using normal brackets instead of square brackets
 
 const num = 103;
 
@@ -14,11 +15,20 @@ 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
+// =============>The output was 3 for all instead of the last digit of each number.
+//
 // Explain why the output is the way it is
-// =============> write your explanation here
+// =============> This is because we already declared the num variable as a constant
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> 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
+//There was no parameter so the function wasn't running properly.
+//function getLastDigit(num) {
+ // 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)}`);

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

@@ -14,6 +14,10 @@
 // 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) {
+function calculateBMI(weight,height) {
+  return (weight/(height*height)).toFixed(1);
+
     // return the BMI of someone based off their weight and height
-}
+}
+console.log(`Your BMI is ${calculateBMI(56,1.5)}`)
+//console.log(`Your BMI is ${calculateBMI(weight,height)}`)

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

@@ -14,3 +14,8 @@
 // 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 caseToUpperS(string){
+    return string.toUpperCase().replaceAll(" ", "_");
+
+}
+console.log(`Your new word is ${caseToUpperS("i love cyf so much")}`)

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

@@ -4,3 +4,36 @@
 // 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){
+
+    let penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+    );
+
+    let paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+    let pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+    );
+
+    let pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+
+    return {pounds, pence};
+}
+const { pounds, pence } = toPounds("10390p");
+
+console.log(`£${pounds}.${pence}`);
+
+
+
+// This program takes a string representing a price in pence
+// The program then builds up a string representing the price in pounds
+
+// You need to do a step-by-step breakdown of each line in this program
+// Try and describe the purpose / rationale behind each step
+
+// To begin, we can start with
+// 1. const penceString = "399p": initialises a string variable with the value "399p"

Sprint-2/4-mandatory-interpret/time-format.js

@@ -21,18 +21,17 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> 3 times
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
 
 // b) What is the value assigned to num when pad is called for the first time?
-// =============> write your answer here
+// =============> 0
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+// =============> The return value of pad when it is called for the first time is "00" and it represents the total hours
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
-
+// =============> num = 1 when pad is called for the last time because the pad function is called with the remainingseconds which is 1
 // e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============>  "01" is returned for the last time when pad is called and it represents and it represents the remaining seconds