CodeYourFuture · DibaKarimi · Jan 22, 2021 · Hozan94 · Jan 22, 2021 · Hozan94
diff --git a/exercises/B-hello-world/exercise.js b/exercises/B-hello-world/exercise.js
@@ -1 +1,6 @@
 console.log("Hello world");
+console.log("Hello world , I am learning javaScript");
+console.log("12");
+console.log(12);
+console.log(12 + 45);
+console.log("12" + "434");
diff --git a/exercises/C-variables/exercise.js b/exercises/C-variables/exercise.js
@@ -1,3 +1,4 @@
-// Start by creating a variable `greeting`
-
+var greeting = "Hello world";
+console.log(greeting);
+console.log(greeting);
 console.log(greeting);
diff --git a/exercises/D-strings/exercise.js b/exercises/D-strings/exercise.js
@@ -1,3 +1,4 @@
-// Start by creating a variable `message`
-
+var message = "This is a string";
+var messageType = typeof message;
 console.log(message);
+console.log(messageType);
diff --git a/exercises/E-strings-concatenation/exercise.js b/exercises/E-strings-concatenation/exercise.js
@@ -1,3 +1,4 @@
-// Start by creating a variable `message`
-
-console.log(message);
+var greetingStart = "Hello, my name is ";
+var name = "Somayeh"
+var message = greetingStart + name;
+console.log(message); // Log "Hello, my name is Somayeh"
diff --git a/exercises/F-strings-methods/exercise.js b/exercises/F-strings-methods/exercise.js
@@ -1,3 +1,4 @@
-// Start by creating a variable `message`
-
+var name = "Somayeh";
+var nameLength = name.length;
+var message =`My name is ${name} and my name is ${nameLength} characters long`;
 console.log(message);
diff --git a/exercises/F-strings-methods/exercise2.js b/exercises/F-strings-methods/exercise2.js
@@ -1,3 +1,5 @@
-const name = " Daniel  ";
-
+let name = " Somayeh  ";
+name = name.trim();
+const nameLength = name.length;
+var message =`My name is ${name} and my name is ${nameLength} characters long`;
 console.log(message);
diff --git a/exercises/G-numbers/README.md b/exercises/G-numbers/README.md
@@ -25,5 +25,5 @@ var difference = 10 - 2; // 8
 ```
 Number of students: 15
 Number of mentors: 8
-Total numnber of students and mentors: 23
+Total number of students and mentors: 23
 ```
diff --git a/exercises/G-numbers/exercise.js b/exercises/G-numbers/exercise.js
@@ -1 +1,9 @@
-// Start by creating a variables `numberOfStudents` and `numberOfMentors`
+var numberOfStudents = 15;
+var numberOfMentors = 8;
+var totalNumbers = numberOfStudents + numberOfMentors;
+var message = "Number of students: " + numberOfStudents;
+console.log(message);
+message = "Number of mentors: " + numberOfMentors;
+console.log(message);
+message = "Total number of students and mentors: " + totalNumbers;
+console.log(message);
diff --git a/exercises/I-floats/exercise.js b/exercises/I-floats/exercise.js
@@ -1,2 +1,12 @@
 var numberOfStudents = 15;
 var numberOfMentors = 8;
+var percentageOfStudent = Math.round(
+  (numberOfStudents / (numberOfStudents + numberOfMentors)) * 100
+);
+var percentageOfMentors = Math.round(
+  (numberOfMentors / (numberOfStudents + numberOfMentors)) * 100
+);
+var message = "Percentage students: " + percentageOfStudent + "%";
+console.log(message);
+message = "Percentage mentors: " + percentageOfMentors + "%";
+console.log(message);
diff --git a/exercises/J-functions/exercise.js b/exercises/J-functions/exercise.js
@@ -1,7 +1,10 @@
+// Halves the number
 function halve(number) {
-  // complete the function here
+  return number / 2;
 }
-
 var result = halve(12);
-
+console.log(result);
+result = halve(900);
+console.log(result);
+result = halve(322);
 console.log(result);
diff --git a/exercises/J-functions/exercise2.js b/exercises/J-functions/exercise2.js
@@ -1,7 +1,6 @@
+// Triples the number
 function triple(number) {
-  // complete function here
+  return number * 3;
 }
-
 var result = triple(12);
-
 console.log(result);
diff --git a/exercises/K-functions-parameters/exercise.js b/exercises/K-functions-parameters/exercise.js
@@ -1,6 +1,6 @@
-// Complete the function so that it takes input parameters
-function multiply() {
-  // Calculate the result of the function and return it
+// Multiplies two numbers together
+function multiply(num1, num2) {
+  return num1 * num2;
 }
 
 // Assign the result of calling the function the variable `result`

diff --git a/exercises/K-functions-parameters/exercise2.js b/exercises/K-functions-parameters/exercise2.js
@@ -1,4 +1,7 @@
-// Declare your function first
+// Divides two numbers
+function divide(num1, num2) {
+  return num1 / num2;
+}
 
 var result = divide(3, 4);
 

diff --git a/exercises/K-functions-parameters/exercise3.js b/exercises/K-functions-parameters/exercise3.js
@@ -1,4 +1,7 @@
-// Write your function here
+// creating a greeting by the name 
+function createGreeting(name) {
+    return "Hello, my name is "+name
+}
 
 var greeting = createGreeting("Daniel");
 

diff --git a/exercises/K-functions-parameters/exercise4.js b/exercises/K-functions-parameters/exercise4.js
@@ -1,5 +1,8 @@
-// Declare your function first
+// adds two numbers
+function add(num1, num2) {
+  return num1 + num2;
+}
 
-// Call the function and assign to a variable `sum`
+var sum = add(13, 124);
 
 console.log(sum);
diff --git a/exercises/K-functions-parameters/exercise5.js b/exercises/K-functions-parameters/exercise5.js
@@ -1,5 +1,8 @@
-// Declare your function here
-
+// Create a greeting message by name and age
+function createLongGreeting(name, age) {
+  var message = `Hello, my name is ${name} and I'm ${age} years old`;
+  return message;
+}
 const greeting = createLongGreeting("Daniel", 30);
 
 console.log(greeting);
diff --git a/exercises/L-functions-nested/exercise.js b/exercises/L-functions-nested/exercise.js
@@ -1,5 +1,19 @@
-var mentor1 = "Daniel";
-var mentor2 = "Irina";
-var mentor3 = "Mimi";
-var mentor4 = "Rob";
-var mentor5 = "Yohannes";
+var numberOfStudents = 15;
+var numberOfMentors = 8;
+// Calculates the percentage
+function getPercentage(numberOfPerson, totalNumbers) {
+  var percentage = Math.round((numberOfPerson / totalNumbers) * 100);
+  return percentage;
+}
+// Create the message
+function createMessage(person, numberOfPerson, totalNumbers) {
+  var percentage = getPercentage(numberOfPerson, totalNumbers);
+  var message = `Percentage ${person}: ${percentage} %`;
+  return message;
+}
+
+var totalNumbers = numberOfStudents + numberOfMentors;
+var result = createMessage("students", numberOfStudents, totalNumbers);
+console.log(result);
+result = createMessage("mentors", numberOfMentors, totalNumbers);
+console.log(result);
diff --git a/exercises/L-functions-nested/exercise2.js b/exercises/L-functions-nested/exercise2.js
@@ -0,0 +1,23 @@
+var mentor1 = "Daniel";
+var mentor2 = "Irina";
+var mentor3 = "Mimi";
+var mentor4 = "Rob";
+var mentor5 = "Yohannes";
+function upperCase(name) {
+  return name.toUpperCase();
+}
+function createGreeting(name) {
+  var upName = upperCase(name);
+  var message = "HELLO " + upName;
+  return message;
+}
+var message = createGreeting(mentor1);
+console.log(message);
+message = createGreeting(mentor2);
+  console.log(message);
+message = createGreeting(mentor3);
+  console.log(message);
+message = createGreeting(mentor4);
+  console.log(message);
+message = createGreeting(mentor5);
+console.log(message);
diff --git a/extra/1-currency-conversion.js b/extra/1-currency-conversion.js
@@ -5,7 +5,9 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(price) {
+  return price * 1.4;
+}
 
 /*
   CURRENCY FORMATTING
@@ -15,7 +17,9 @@ 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(price) {
+  return price * 0.99 * 5.7;
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

diff --git a/extra/2-piping.js b/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(price) {
+    return "£" + price;
 }
 
 const startingValue = 2
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode = 
+let badCode = format(multiply(add(startingValue, 10), 2));
 
 /* BETTER PRACTICE */
-
-let goodCode = 
+let sum = add(startingValue, 10);
+let multiplies = multiply(sum, 2);
+let goodCode = format(multiplies);
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

diff --git a/mandatory/1-syntax-errors.js b/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 " + name "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
 }
 
 /* 

diff --git a/mandatory/2-logic-error.js b/mandatory/2-logic-error.js
@@ -1,16 +1,15 @@
 // 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;
 }
 
 /* 

diff --git a/mandatory/3-function-output.js b/mandatory/3-function-output.js
@@ -1,16 +1,15 @@
-// Add comments to explain what this function does. You're meant to use Google!
+//  returns a random number between 0 , and 10 :
 function getNumber() {
   return Math.random() * 10;
 }
 
-// Add comments to explain what this function does. You're meant to use Google!
+//  joins two strings
 function s(w1, 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 this function is expected to return.
+  return firstWord + ` ` + secondWord + ` ` + thirdWord;
 }
 
 /* 

diff --git a/mandatory/4-tax.js b/mandatory/4-tax.js
@@ -5,7 +5,9 @@
   Sales tax is 20% of the price of the product
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(price) {
+  return price+price * 0.2;
+}
 
 /*
   CURRENCY FORMATTING
@@ -17,8 +19,11 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
-
+function addTaxAndFormatCurrency(price) {
+  var totalPrice =  calculateSalesTax(price);
+  var result="£" + totalPrice.toFixed(2);
+  return result;
+}
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====