Birmingham | 26-ITP-Jan | Tasleem Adedokun | Sprint 2 | coursework

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

@@ -1,13 +1,25 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//   I thought it was going to work, however my prediction was wrong. =============> write your prediction here
 
 // call the function capitalise with a string input
+
+//SyntaxError: Identifier 'str' has already been declared
+
+
 // 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
+
+
+
+// The identifier "str" has already been declared as a parameter in the function and cannot be redeclared withing a block scope.// =============> write your explanation here
+
+
+  function capitalise(str) {
+   return `${str[0].toUpperCase()}${str.slice(1)}`;
+  }
+  //  =============> write your new code here

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

@@ -5,16 +5,24 @@
 
 // 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
+// we already have a parameter "decimalNumber" which has been declared in the function. declaring it again with constant is going to give syntax error.
+// Also the console.log is trying to print "decimalNumber" which only exist in a function that is outside its scope.=============> 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(0.5));// =============> write your new code here

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

@@ -3,18 +3,21 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+//  A number cannot be used as a parameter.=============> write your prediction of the error here
 
-function square(3) {
-    return num * num;
-}
 
-// =============> write the error message here
+// SyntaxError: Unexpected number =============> write the error message here
+
 
-// =============> explain this error message here
+// The parameter is not meant to be a number. Also we are trying to return num that was not never created. =============> explain this error message here
 
 // Finally, correct the code to fix the problem
 
+
+function square (num) {
+    return num * num; 
+
+}
 // =============> write your new code here
 
 

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

@@ -1,14 +1,19 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// I am predicting there will be an error. =============> 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
+// Although it is going to print the value to be 320, it won't return back the value as 320.=============> write your explanation here
 
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+
+
+function multiply(a, b) {
+  return (a * b);
+}
+
+console.log(`${multiply(10, 32)}`)
+//=============> write your new code here

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

@@ -1,13 +1,16 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  There will be an error because there is going to be nothing to define after return. =============> 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
+
+
+//Finally, correct the code to fix the problem
+ function sum(a, b) {
+  return a+b;
+
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`); 
+//=============> write your new code here

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

@@ -1,23 +1,23 @@
 // Predict and explain first...
 
-// Predict the output of the following code:
-// =============> Write your prediction here
+// IPredict the output of the following code:
+// I am predicting an error because the variable const num = 103 is  outside the function.  =============> Write your prediction here 
+// There is no parameters in the function condition
 
-const num = 103;
 
-function getLastDigit() {
+
+// Now run the code and compare the output to your prediction
+// when i ran the output i got 3,3,3.=============> write the output here
+// Explain why the output is the way it is
+//  the argument for the console.log is ignored because "getlastDigit" does not have a parameter. =============> write your explanation here
+// Finally, correct the code to fix the problem
+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)}`);
-
-// 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.

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

@@ -15,5 +15,11 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
+    const bmi = weight/(height * height);
+    return bmi.toFixed(1);
     // return the BMI of someone based off their weight and height
-}
+}
+
+console.log (calculateBMI(90,1.92));
+
+// After running node console.;og printed (24.4).

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

@@ -14,3 +14,12 @@
 // 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 toUpperSnakeCase(str) {
+  return str.toUpperCase().replaceAll(" ", "_");
+}
+console.log (toUpperSnakeCase("Code Your Future"));
+
+// After i ran node it printed (CODE_YOUR_FUTURE).

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

@@ -4,3 +4,32 @@
 // 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) {
+  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)
+    .padEnd(2, "0");
+
+  return `£${pounds}.${pence}`;
+}
+
+console.log (toPounds("399p")); //£3.99
+console.log (toPounds("156p")); //£1.56
+console.log (toPounds("10p")); //£0.10
+console.log (toPounds("56p")); //£0.56
+console.log (toPounds("25p"));  // £0.25
+
+// After running node it printed the above respectively.

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

@@ -17,18 +17,18 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+//  3 times. =============> write your answer here
 
 // 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
+// Answer num is 0. =============> write your answer here
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+num.toString().padStart(2, "0"); // answer will be "00"=============> write your answer here
 
 // 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 will be 1. The last pad is for the seconds value. =============> write your answer here
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+//  Ans is "01" because padStart will enable two digits thereby adding 0 in front of it. =============> write your answer here

Sprint-2/5-stretch-extend/format-time.js

@@ -2,14 +2,21 @@
 // Make sure to do the prep before you do the coursework
 // Your task is to write tests for as many different groups of input data or edge cases as you can, and fix any bugs you find.
 
+
 function formatAs12HourClock(time) {
-  const hours = Number(time.slice(0, 2));
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+  let [hours, minutes] = time.split(":").map(Number);
+  let period = hours >= 12 ? "pm" : "am";
+
+  if (hours === 0) {
+    hours = 12;
+  } else if (hours > 12) {
+    hours -= 12;
   }
-  return `${time} am`;
-}
 
+  const hoursString = hours < 10 ? `0${hours}` : `${hours}`;
+  const minutesString = minutes < 10 ? `0${minutes}` : `${minutes}`;
+
+  return `${hoursString}:${minutesString} ${period}`;
 const currentOutput = formatAs12HourClock("08:00");
 const targetOutput = "08:00 am";
 console.assert(
@@ -23,3 +30,17 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
+
+const currentOutput3 = formatAs12HourClock("21:00");
+const targetOutput3 = "09:00 pm";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
+);
+}
+
+
+
+console.log(formatAs12HourClock("08:00")); // 08:00 am
+console.log(formatAs12HourClock("23:00")); // 11:00 pm
+console.log(formatAs12HourClock("21:00")); // 09:00 pm