Week8

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${file}"
+        }
+    ]
+}

week-1/Homework/extra/1-currency-conversion.js

@@ -5,7 +5,10 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(priceGBP) {
+  let priceUSD = priceGBP * 1.4;
+  return priceUSD;
+}
 
 /*
   CURRENCY FORMATTING
@@ -16,20 +19,23 @@ function convertToUSD() {}
   Find a way to add 1% to all currency conversions (think about the DRY principle)
 */
 
-function convertToBRL() {}
+function convertToBRL(priceGBP) {
+  let priceBRL = priceGBP * 5.7 * 1.01;
+  return priceBRL;
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function test(test_name, expr) {
   let status;
   if (expr) {
-      status = "PASSED"
+    status = "PASSED";
   } else {
-      status = "FAILED"
+    status = "FAILED";
   }
 
-  console.log(`${test_name}: ${status}`)
+  console.log(`${test_name}: ${status}`);
 }
 
-test('convertToUSD function works', convertToUSD(32) === 44.8)
-test('convertToBRL function works', convertToBRL(30) === 172.71)
+test("convertToUSD function works", convertToUSD(32) === 44.8);
+test("convertToBRL function works", convertToBRL(30) === 172.71);

week-1/Homework/extra/2-piping.js

@@ -15,44 +15,49 @@
   3. Write a more readable version of what you wrote in step 2 under the BETTER PRACTICE comment. Assign
   the final result to the variable goodCode
 */
-
-function add() {
-
+let a, b, c, d;
+function add(a, b) {
+  let summa = Math.round((a + b) * 10) / 10;
+  return summa;
 }
 
-function multiply() {
-
+function multiply(b, c) {
+  return b * c;
 }
 
-function format() {
-
+function format(d) {
+  return "£" + d;
 }
-
-const startingValue = 2
+console.log(add(1, 3));
+console.log(add(2.4, 5.3));
+const startingValue = 2;
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode = 
+
+let badCode = format(multiply(add(10, startingValue), 2));
 
 /* BETTER PRACTICE */
 
-let goodCode = 
+addValue = add(startingValue, 10);
+multiplayValue = multiply(addValue, 2);
 
+let goodCode = format(multiplayValue);
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function test(test_name, expr) {
   let status;
   if (expr) {
-      status = "PASSED"
+    status = "PASSED";
   } else {
-      status = "FAILED"
+    status = "FAILED";
   }
 
-  console.log(`${test_name}: ${status}`)
+  console.log(`${test_name}: ${status}`);
 }
 
-test('add function - case 1 works', add(1,3) === 4)
-test('add function - case 2 works', add(2.4,5.3) === 7.7)
-test('multiply function works', multiply(2,3) === 6)
-test('format function works', format(16) === "£16")
-test('badCode variable correctly assigned', badCode === "£24")
-test('goodCode variable correctly assigned', goodCode === "£24")
+test("add function - case 1 works", add(1, 3) === 4);
+test("add function - case 2 works", add(2.4, 5.3) === 7.7);
+test("multiply function works", multiply(2, 3) === 6);
+test("format function works", format(16) === "£16");
+test("badCode variable correctly assigned", badCode === "£24");
+test("goodCode variable correctly assigned", goodCode === "£24");

week-1/Homework/mandatory/1-syntax-errors.js

@@ -1,32 +1,39 @@
 // There are syntax errors in this code - can you fix it to pass the tests?
 
-function addNumbers(a b c) {
-    return a + b + c;
+function addNumbers(a, b, c) {
+  return a + b + c;
 }
 
-function introduceMe(name, age)
-return "Hello, my name is " + name "and I am " age + "years old";
-
+function introduceMe(name, age) {
+  return "Hello, my name is " + name + " and I am " + age + " years old";
+}
 function getRemainder(a, b) {
-    remainder = a %% b;
+  remainder = a % b;
 
-    // Use string interpolation here
-    return "The remainder is %{remainder}"
+  // Use string interpolation here
+  return `The remainder is ${remainder}`;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function test(test_name, expr) {
-    let status;
-    if (expr) {
-        status = "PASSED"
-    } else {
-        status = "FAILED"
-    }
-
-    console.log(`${test_name}: ${status}`)
+  let status;
+  if (expr) {
+    status = "PASSED";
+  } else {
+    status = "FAILED";
+  }
+
+  console.log(`${test_name}: ${status}`);
 }
 
-test("fixed addNumbers function - case 1", addNumbers(3,4,6) === 13)
-test("fixed introduceMe function", introduceMe("Sonjide",27) === "Hello, my name is Sonjide and I am 27 years old")
-test("fixed getRemainder function", getRemainder(23,5) === "The remainder is 3")
+test("fixed addNumbers function - case 1", addNumbers(3, 4, 6) === 13);
+test(
+  "fixed introduceMe function",
+  introduceMe("Sonjide", 27) ===
+    "Hello, my name is Sonjide and I am 27 years old"
+);
+test(
+  "fixed getRemainder function",
+  getRemainder(23, 5) === "The remainder is 3"
+);

week-1/Homework/mandatory/2-logic-error.js

@@ -1,31 +1,36 @@
 // The syntax for this function is valid but it has an error, find it and fix it.
 
 function trimWord(word) {
-  return wordtrim();
+  return word.trim();
 }
 
 function getWordLength(word) {
-  return "word".length()
+  return word.length;
 }
 
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+  return a * b * c;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function test(test_name, expr) {
   let status;
   if (expr) {
-      status = "PASSED"
+    status = "PASSED";
   } else {
-      status = "FAILED"
+    status = "FAILED";
   }
 
-  console.log(`${test_name}: ${status}`)
+  console.log(`${test_name}: ${status}`);
 }
 
-test("fixed trimWord function", trimWord("  CodeYourFuture ") === "CodeYourFuture")
-test("fixed wordLength function", getWordLength("A wild sentence appeared!") === 25)
-test("fixed multiply function", multiply(2,3,6) === 36)
+test(
+  "fixed trimWord function",
+  trimWord("  CodeYourFuture ") === "CodeYourFuture"
+);
+test(
+  "fixed wordLength function",
+  getWordLength("A wild sentence appeared!") === 25
+);
+test("fixed multiply function", multiply(2, 3, 6) === 36);

week-1/Homework/mandatory/3-function-output.js

@@ -1,31 +1,39 @@
-// Add comments to explain what this function does. You're meant to use Google!
+// The function returns pseudorandom number from [0,10)
 function getNumber() {
-    return Math.random() * 10;
+  return Math.random() * 10;
 }
 
-// Add comments to explain what this function does. You're meant to use Google!
+// The function concatenates 2 words together
 function s(w1, w2) {
-    return w1.concat(w2);
+  return w1.concat(w2);
 }
 
 function concatenate(firstWord, secondWord, thirdWord) {
-    // Write the body of this function to concatenate three words together
-    // Look at the test case below to understand what to expect in return 
+  // Write the body of this function to concatenate three words together
+  // Look at the test case below to understand what to expect in return
+  return firstWord.concat(" ", secondWord, " ", thirdWord);
 }
-
 /* ======= TESTS - DO NOT MODIFY ===== */
-
 function test(test_name, expr) {
-    let status;
-    if (expr) {
-        status = "PASSED"
-    } else {
-        status = "FAILED"
-    }
-  
-    console.log(`${test_name}: ${status}`)
+  let status;
+  if (expr) {
+    status = "PASSED";
+  } else {
+    status = "FAILED";
+  }
+
+  console.log(`${test_name}: ${status}`);
 }
-
-test("concatenate function - case 1 works", concatenate('code', 'your', 'future') === "code your future")
-test("concatenate function - case 2 works", concatenate('I', 'like', 'pizza') === "I like pizza")
-test("concatenate function - case 3 works", concatenate('I', 'am', 13) === "I am 13")
+
+test(
+  "concatenate function - case 1 works",
+  concatenate("code", "your", "future") === "code your future"
+);
+test(
+  "concatenate function - case 2 works",
+  concatenate("I", "like", "pizza") === "I like pizza"
+);
+test(
+  "concatenate function - case 3 works",
+  concatenate("I", "am", 13) === "I am 13"
+);

week-1/Homework/mandatory/4-tax.js

@@ -5,7 +5,10 @@
   Sales tax is 20% of the price of the product
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(cost) {
+  let salesTax = (cost * (100 + 20)) / 100;
+  return salesTax;
+}
 
 /*
   CURRENCY FORMATTING
@@ -17,25 +20,36 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function formatCurrency() {}
-
+function formatCurrency(cost) {
+  let twoDecimalSalexTax = calculateSalesTax(cost).toFixed(2);
+  return "£".concat(twoDecimalSalexTax);
+}
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function test(test_name, expr) {
   let status;
   if (expr) {
-      status = "PASSED"
+    status = "PASSED";
   } else {
-      status = "FAILED"
+    status = "FAILED";
   }
 
-  console.log(`${test_name}: ${status}`)
+  console.log(`${test_name}: ${status}`);
 }
 
-test("calculateSalesTax function - case 1 works", calculateSalesTax(15) === 18)
-test("calculateSalesTax function - case 2 works", calculateSalesTax(17.5) === 21)
-test("calculateSalesTax function - case 3 works", calculateSalesTax(34) === 40.8)
-
-test("formatCurrency function - case 1 works", formatCurrency(15) === "£18.00")
-test("formatCurrency function - case 2 works", formatCurrency(17.5) === "£21.00")
-test("formatCurrency function - case 3 works", formatCurrency(34) === "£40.80")
+test("calculateSalesTax function - case 1 works", calculateSalesTax(15) === 18);
+test(
+  "calculateSalesTax function - case 2 works",
+  calculateSalesTax(17.5) === 21
+);
+test(
+  "calculateSalesTax function - case 3 works",
+  calculateSalesTax(34) === 40.8
+);
+
+test("formatCurrency function - case 1 works", formatCurrency(15) === "£18.00");
+test(
+  "formatCurrency function - case 2 works",
+  formatCurrency(17.5) === "£21.00"
+);
+test("formatCurrency function - case 3 works", formatCurrency(34) === "£40.80");