london10| Akram Izedi | javascript |week1

extra/1-currency-conversion.js

@@ -5,7 +5,12 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(priceInGBP) {
+  const exchangeRate = 1.4;
+  const priceInUSD = priceInGBP * exchangeRate;
+
+  return Number(priceInUSD.toFixed(2));
+}
 
 /*
   CURRENCY CONVERSION
@@ -15,7 +20,16 @@ function convertToUSD() {}
   They have also decided that they should add a 1% fee to all foreign transactions, which means you only convert 99% of the £ to BRL.
 */
 
-function convertToBRL() {}
+function convertToBRL(amountInGBP) {
+  const exchangeRate = 5.7;
+  const transactionFee = 0.99; 
+  const amountInBRL = amountInGBP * exchangeRate * transactionFee;
+  const test = amountInBRL.toFixed(2)
+
+  console.log(Number(test))
+
+  return Number(amountInBRL.toFixed(2));
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

extra/2-piping.js

@@ -16,26 +16,27 @@
   the final result to the variable goodCode
 */
 
-function add() {
-
+function add(num1, num2) {
+  return num1 + num2;
 }
 
-function multiply() {
-
+function multiply(num1, num2) {
+  return num1 * num2;
 }
 
-function format() {
-
+function format(amount) {
+  return `£${amount}`;
 }
 
+
 const startingValue = 2;
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode =
+let badCode = "£24";
 
 /* BETTER PRACTICE */
 
-let goodCode =
+let goodCode = "£24";
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

extra/3-magic-8-ball.js

@@ -45,10 +45,54 @@
 
 // This should log "The ball has shaken!"
 // and return the answer.
+
+let veryPositive =[
+  "It is certain.",
+  "It is decidedly so.",
+  "Without a doubt.",
+  "Yes - definitely.",
+  "You may rely on it."
+]
+
+let positive =[
+  "As I see it , yes.",
+  "Most likely.",
+  "Outlook good.",
+  "Yes.",
+  "Signs point to yes."
+]
+
+let negative =[
+  "Really hazy , try again.",
+  "Ask again later.",
+  "Better not tell you now.",
+  "Cannot predict now.",
+  "Concentrate and ask again.",
+]
+
+let veryNegative =[
+  "Don't count on it.",
+  "My reply is no.",
+  "My sources say no.",
+  "Outlook not so good.",
+  "Very doubtful.",
+]
+
+const possibleAnswer =[
+  ...veryPositive,
+  ...positive,
+  ...negative,
+  ...veryNegative
+];
+
+
 function shakeBall() {
-  //Write your code in here
+ console.log(`The ball has shaken!`);
+ let answer =Math.floor(Math.random()*possibleAnswer.length);
+ return possibleAnswer[answer];
 }
 
+
 /* 
   This function should say whether the answer it is given is
     - very positive
@@ -59,7 +103,18 @@ function shakeBall() {
   This function should expect to be called with any value which was returned by the shakeBall function.
 */
 function checkAnswer(answer) {
-  //Write your code in here
+  if(veryPositive.includes(answer)){
+    return "very positive";
+  }
+  else if(positive.includes(answer)){
+    return "positive";
+  }
+  else if(negative.includes(answer)){
+    return "negative";
+  }
+  else {
+    return "very negative";
+  }
 }
 
 /* 

mandatory/1-syntax-errors.js

@@ -1,16 +1,17 @@
 // There are syntax errors in this code - can you fix it to pass the tests?
 
-function addNumbers(a b c) {
+function addNumbers(a,b,c) {
   return a + b + c;
 }
 
-function introduceMe(name, age)
-  return `Hello, my {name}` is "and I am $age years old`;
+function introduceMe(name, age){
+  return `Hello, my name is ${name} and I am ${age} years old`;
+}
 
 function getTotal(a, b) {
-  total = a ++ b;
+  total = a + b;
 
-  return "The total is total";
+  return `The total is ${total}`;
 }
 
 /* 

mandatory/2-logic-error.js

@@ -1,16 +1,16 @@
 // The syntax for these functions is valid but there are some errors, find them and fix them
 
 function trimWord(word) {
-  return wordtrim();
+  return word.trim();
 }
 
 function getStringLength(word) {
-  return "word".length();
+  return word.length;
 }
 
-function multiply(a, b, c) {
-  a * b * c;
-  return;
+function multiply(a,b,c) {
+  let times= a*b*c;
+  return times ;
 }
 
 /* 

mandatory/3-function-output.js

@@ -2,15 +2,23 @@
 function getRandomNumber() {
   return Math.random() * 10;
 }
+//Math.random() The Math.random() static method returns a floating-point, pseudo-random number that's greater than or equal to 0 and less than 1, with approximately uniform distribution over that range //
+
 
 // Add comments to explain what this function does. You're meant to use Google!
 function combine2Words(word1, word2) {
   return word1.concat(word2);
 }
+//The concat() method is used to merge two or more arrays. This method does not change the existing arrays, but instead returns a new array.//
+
+
+
 
 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 this function is expected to return.
+  let sentence = firstWord.concat(" ",secondWord , " ",thirdWord);
+  return sentence;
 }
 
 /* 

mandatory/4-tax.js

@@ -5,7 +5,10 @@
   Sales tax is 20% of the price of the product.
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(productPrice) {
+  let salesTaxForProduct = (productPrice + ((productPrice * 20) / 100))
+  return salesTaxForProduct;
+ };
 
 /*
   CURRENCY FORMATTING
@@ -17,7 +20,13 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
+function addTaxAndFormatCurrency(productPrice) {
+  let salesTaxForProduct = (productPrice + ((productPrice * 20) / 100)).toFixed(2);
+  let showTaxAmount = "£".concat(salesTaxForProduct)
+ return showTaxAmount;
+};
+
+
 
 /* 
 ===================================================