HannahN

task-1/leap-year.js

@@ -7,3 +7,23 @@ const prompt = promptSync();
 // Step 1: prompt the user to enter a year
 // Step 2: convert the user input to a number so we can perform calculations
 // Step 3: Implement the logic
+let UserInput = prompt('Enter an year: ');
+
+let year = Number(UserInput);
+
+
+if(year<1 || year >9999 || isNaN(year)){
+    console.log('Invalid Year');}
+
+    else if(year % 400 === 0 ){
+    console.log('Yes,' +year+' is a leap year');
+}
+else if(year % 100 ===0 || !year % 4 ===0){
+
+    console.log('no,' +year+' is not a leap year');
+}
+else{
+    console.log('No,' +year+' is not a leap year');
+}
+
+

task-2/login.js

@@ -4,9 +4,48 @@ import { errorMessage, successMessage } from './app.js';
 let incorrectAttempts = 0;
 
 function onLogin(username, password) {
+
   // Write your code here.
   // Use the variables 'username' and 'password' to access the input values
   // Use incorrectAttempts to track the number of failed attempts
+
+  const validUsers =[
+    {username : 'admin', password : 'Hack1234'},
+    {username : 'user', password : 7654321}
+  ];
+  if (incorrectAttempts >= 4){
+    errorMessage('Login blocked: Too many incorrect attempts');
+    return;
+  }
+
+    let foundCorrectUser = false;
+
+
+    if (username === validUsers[0].username && password === validUsers[0].password) {
+        foundCorrectUser = true;
+    }
+
+
+    if (username === validUsers[1].username && password === validUsers[1].password) {
+        foundCorrectUser = true;
+    }
+
+
+    if (foundCorrectUser === true) {     
+        incorrectAttempts = 0;
+        successMessage("Logged in successfully");
+    } else {
+
+        incorrectAttempts = incorrectAttempts + 1;
+
+
+        if (incorrectAttempts >= 4) {
+            errorMessage("Login blocked: Too many incorrect attempts");
+        } else {
+            errorMessage("Incorrect credentials");
+        }
+    }
+
 }
 
 // Do not change the line below

task-2/package.json

@@ -0,0 +1,6 @@
+{
+  "dependencies": {
+    "prompt-sync": "^4.2.0"
+  },
+  "type": "module"
+}

task-3/converter.js

@@ -5,18 +5,19 @@ const prompt = promptSync();
 const EUR_USD_RATE = 1.1643;
 
 // Menu display
-conole.log("Hello and welcome to the currency converter. Please choose: ");
+console.log("Hello and welcome to the currency converter. Please choose: ");
 console.log("1: Convert EUR to USD");
 console.log("2: Convert USD to EUR");
-const menuSelection = prompt("Select your option [1 or 2]: ");
+console.log("3: Display the current exchange rate")
+const menuSelection = prompt("Select your option [1 , 2 or 3]: ");
 
 console.log("\n");
 
 if (menuSelection === "1") {
   // EUR to USD
   const eurAmountInput = prompt("Enter amount in EUR: ");
   const eurAmountNum = Number(eurAmountInput);
-  if (Number.isNaN(eurAmountNum) || eurAmountNum > 0) {
+  if (Number.isNaN(eurAmountNum) || eurAmountNum < 0) {
     console.log("Please enter a valid positive number for the amount.");
   } else {
     const usdAmount = eurAmountNum * EUR_USD_RATE;
@@ -29,9 +30,13 @@ if (menuSelection === "1") {
   if (Number.isNaN(usdAmountNum) || usdAmountNum < 0) {
     console.log("Please enter a valid positive number for the amount.");
   } else {
-    const eurAmount = usdAmountNum / eur_usd_rate;
+    const eurAmount = usdAmountNum / EUR_USD_RATE;
     console.log(usdAmountNum.toFixed(2) + ' USD is equal to ' + usdAmountNum.toFixed(2) + ' EUR.');
   }
-} else {
+}
+else if (menuSelection === "3"){
+  console.log("The current exchange rate is 1 EUR = 1.1643 USD.");
+}
+ else {
   console.log("Invalid selection. Please choose either 1 or 2.");
 }