Update debug-common-errors.js

debug-common-errors.js

@@ -23,21 +23,31 @@ Think about which debugging methods you found most useful and how you might appl
 // Program A
 // Description:
 // This program is intended to display a simple prompt in the console but fails to run.
+//There's a missing closing quotation mark at the end of the string in the console.log() statement.
 
-console.log("Welcome to the bootcamp
+//The program will throw a syntax error because the string is not properly closed.
+//console.log("Welcome to the bootcamp
+console.log("Welcome to the bootcamp");
+//Adding the missing closing quotation mark ensures the string is valid, resolving the syntax error. Always check that strings are correctly opened and closed with matching quotes.
 
 // What’s Wrong?
 
 
 // Program B
 // Description:
 // This code attempts to multiply each number in an array by 2 and display the results. However, it crashes at runtime.
-
+//The array contains a string "eight" that cannot be multiplied by a number. This results in NaN (Not a Number) during runtime when attempting the multiplication.
+//logic error
 let numbers = [2, 4, "eight"];
 for (let i = 0; i < numbers.length; i++) {
+   if (typeof numbers[i] === "number") {
   let doubled = numbers[i] * 2;
   console.log(doubled);
+}else {
+    console.log(`Skipping non-numeric value: ${numbers[i]}`);
+  }
 }
+//This fix checks each element's type (typeof numbers[i] === "number") to ensure only numeric values are processed. Non-numeric values are skipped to prevent runtime errors.
 
 // What’s Wrong?
 
@@ -46,15 +56,17 @@ for (let i = 0; i < numbers.length; i++) {
 // Program C (Logic Error)
 // Description:
 // This snippet of code is supposed to check if a given number is prime (i.e., divisible only by 1 and itself). However, it incorrectly marks some numbers as prime or not prime.
-
+//The logic incorrectly marks non-prime numbers as prime. The issue lies in the return true statement inside the for loop. It returns true as soon as a divisor is found, rather than indicating the number is not prime.
+//Fix: Correct the logic to return false when a divisor is found and true only when no divisors exist:
+//logic error
 function isPrime(num) {
   if (num < 2) return false;
   for (let i = 2; i < num; i++) {
     if (num % i === 0) {
-      return true;  // Supposed to indicate num is NOT prime
+      return false;  // Supposed to indicate num is NOT prime
     }
   }
-  return false; // Supposed to indicate num IS prime
+  return true; // Supposed to indicate num IS prime
 }
 
 console.log(isPrime(7)); // Expected true but gets false