Solution

Author: SamCunion

a.out

@@ -11,25 +11,36 @@ class BankAccount {
     // Constructor
     BankAccount(){
         // TODO: Implement the constructor
+        accountNumber = "000000";
+        accountHolderName = "Default Account Holder";
+        balance = 0;
     }
 
     BankAccount(const std::string& accNumber, const std::string& accHolder, double initialBalance){
         // TODO: Implement the constructor
+        accountNumber = accNumber;
+        accountHolderName = accHolder;
+        balance = initialBalance;
     }
 
     // Deposit method
     void Deposit(double amount) {
         // TODO: Implement the Deposit method
+        balance += amount;
     }
 
     // Withdraw method
     void Withdraw(double amount) {
         // TODO: Implement the Deposit method
+        balance -= amount;
     }
 
     // Display account information
     void DisplayAccountInfo() {
         // TODO: Implement the DisplayAccountInfo method
+        std::cout << "Account Number: " << accountNumber << std::endl;
+        std::cout << "Account Holder: " << accountHolderName << std::endl;
+        std::cout << "Balance: " << std::to_string(balance) << std::endl;
     }
 
     double GetBalance() const {

b.out

@@ -2,8 +2,16 @@
 
 // Function to calculate factorial using multiple threads
 long calculateFactorial(int n) {
-    long result = 0;
+    long result = 1;
     //TODO: Implement the function to calculate factorial of n
-
+    if (n < 0) {
+        throw std::invalid_argument("Invalid argument of " + std::to_string(n) + " less than 0");
+    }
+    if (n == 0) {
+        return 1;
+    }
+    for (int i = 1; i <= n; i++) {
+        result *= i;
+    }
     return result;
 }