Diana C.

package.json

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

task-1/leap-year.js

@@ -7,3 +7,22 @@ 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
+
+
+const year = Number(prompt('Enter to check the year: '));
+
+
+if (isNaN(year) || year > 9999 || year < 1) {
+    console.log("Invalid year!");
+} else if ((year % 400) === 0) {
+    console.log(`Yes, ${year} is a leap year`);
+} else if ((year % 100) === 0) {
+    console.log(`No, ${year} is not a leap year`);
+} else if ((year % 4) === 0) {
+    console.log(`Yes, ${year} is a leap year`);
+}
+else {
+  console.log(`No, ${year} is not a leap year`);
+}
+
+

task-2/login.js

@@ -4,10 +4,29 @@ 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
+  if ((username === "admin" && password === "Hack1234") || (username === "user" && password === "7654321")) {
+    successMessage("Logged in successfully");
+  } else {
+    incorrectAttempts++;
+
+    if (incorrectAttempts >= 4) {
+      errorMessage("Login blocked: Too many incorrect attempts");
+    } else {
+      errorMessage("Incorrect credentials");
+    }
+  }
 }
 
 // Do not change the line below
 export { onLogin };
+
+
+
+
+
+
+
+
+// Write your code here.
+  // Use the variables 'username' and 'password' to access the input values
+  // Use incorrectAttempts to track the number of failed attempts

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("1: Convert EUR to USD");
-console.log("2: Convert USD to EUR");
-const menuSelection = prompt("Select your option [1 or 2]: ");
+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")
+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 {
-  console.log("Invalid selection. Please choose either 1 or 2.");
+} else if (menuSelection === "3"){
+  //The current exchange rate
+  console.log ("The current exchange rate is 1 EUR = 1.1643 USD")
+}
+else {
+  console.log("Invalid selection. Please choose either 1, 2 or 3.");
 }