32 C++ Project Ideas for Students (With Source Code) | Beginner to Advanced

📅 October 25, 2023 | 👤 Sanjana Grover | 🔖 C++, Final Year Project Ideas

				
					#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <iomanip>
using namespace std;

class Account {
private:
    int accountNumber;
    string holderName;
    double balance;

public:
    Account() : accountNumber(0), holderName(""), balance(0.0) {}
    
    Account(int accNo, string name, double initialDeposit) 
        : accountNumber(accNo), holderName(name), balance(initialDeposit) {}

    int getAccountNumber() const { return accountNumber; }
    string getHolderName() const { return holderName; }
    double getBalance() const { return balance; }

    bool deposit(double amount) {
        if (amount <= 0) {
            cout << "Deposit amount must be positive." << endl;
            return false;
        }
        balance += amount;
        cout << "Deposited: $" << fixed << setprecision(2) << amount << endl;
        return true;
    }

    bool withdraw(double amount) {
        if (amount <= 0) {
            cout << "Withdrawal amount must be positive." << endl;
            return false;
        }
        if (amount > balance) {
            cout << "Insufficient funds. Current balance: $" 
                 << fixed << setprecision(2) << balance << endl;
            return false;
        }
        balance -= amount;
        cout << "Withdrawn: $" << fixed << setprecision(2) << amount << endl;
        return true;
    }

    void display() const {
        cout << "Account #" << accountNumber 
             << " | " << holderName 
             << " | Balance: $" << fixed << setprecision(2) << balance << endl;
    }

    // Save account data to file
    void saveToFile(ofstream& file) const {
        file << accountNumber << "," << holderName << "," << balance << endl;
    }
};

class Bank {
private:
    vector<Account> accounts;
    int nextAccountNumber;
    string dataFile;

public:
    Bank(string filename) : dataFile(filename), nextAccountNumber(1001) {
        loadFromFile();
    }

    void createAccount() {
        string name;
        double deposit;
        
        cout << "Enter account holder name: ";
        cin.ignore();
        getline(cin, name);
        
        cout << "Enter initial deposit amount: $";
        cin >> deposit;
        
        if (deposit < 0) {
            cout << "Initial deposit cannot be negative." << endl;
            return;
        }
        
        Account newAcc(nextAccountNumber, name, deposit);
        accounts.push_back(newAcc);
        
        cout << "Account created successfully! Account Number: " 
             << nextAccountNumber << endl;
        nextAccountNumber++;
        saveToFile();
    }

    Account* findAccount(int accNo) {
        for (int i = 0; i < accounts.size(); i++) {
            if (accounts[i].getAccountNumber() == accNo) {
                return &accounts[i];
            }
        }
        return nullptr;
    }

    void depositMoney() {
        int accNo;
        double amount;
        
        cout << "Enter account number: ";
        cin >> accNo;
        
        Account* acc = findAccount(accNo);
        if (acc == nullptr) {
            cout << "Account not found." << endl;
            return;
        }
        
        cout << "Enter deposit amount: $";
        cin >> amount;
        
        if (acc->deposit(amount)) {
            saveToFile();
        }
    }

    void withdrawMoney() {
        int accNo;
        double amount;
        
        cout << "Enter account number: ";
        cin >> accNo;
        
        Account* acc = findAccount(accNo);
        if (acc == nullptr) {
            cout << "Account not found." << endl;
            return;
        }
        
        cout << "Enter withdrawal amount: $";
        cin >> amount;
        
        if (acc->withdraw(amount)) {
            saveToFile();
        }
    }

    void checkBalance() {
        int accNo;
        cout << "Enter account number: ";
        cin >> accNo;
        
        Account* acc = findAccount(accNo);
        if (acc == nullptr) {
            cout << "Account not found." << endl;
            return;
        }
        
        acc->display();
    }

    void listAllAccounts() {
        if (accounts.empty()) {
            cout << "No accounts found." << endl;
            return;
        }
        
        cout << "\n--- All Accounts ---" << endl;
        for (const auto& acc : accounts) {
            acc.display();
        }
    }

    void saveToFile() {
        ofstream file(dataFile);
        file << nextAccountNumber << endl;
        for (const auto& acc : accounts) {
            acc.saveToFile(file);
        }
        file.close();
    }

    void loadFromFile() {
        ifstream file(dataFile);
        if (!file.is_open()) return;
        
        file >> nextAccountNumber;
        file.ignore();
        
        string line;
        while (getline(file, line)) {
            if (line.empty()) continue;
            
            int accNo;
            string name;
            double balance;
            
            size_t pos1 = line.find(',');
            size_t pos2 = line.find(',', pos1 + 1);
            
            accNo = stoi(line.substr(0, pos1));
            name = line.substr(pos1 + 1, pos2 - pos1 - 1);
            balance = stod(line.substr(pos2 + 1));
            
            accounts.push_back(Account(accNo, name, balance));
        }
        file.close();
    }
};

int main() {
    Bank bank("bank_data.txt");
    int choice;
    
    while (true) {
        cout << "\n===== BANKING SYSTEM =====" << endl;
        cout << "1. Create Account" << endl;
        cout << "2. Deposit Money" << endl;
        cout << "3. Withdraw Money" << endl;
        cout << "4. Check Balance" << endl;
        cout << "5. List All Accounts" << endl;
        cout << "6. Exit" << endl;
        cout << "Enter your choice: ";
        cin >> choice;
        cout << endl;
        
        switch (choice) {
            case 1: bank.createAccount(); break;
            case 2: bank.depositMoney(); break;
            case 3: bank.withdrawMoney(); break;
            case 4: bank.checkBalance(); break;
            case 5: bank.listAllAccounts(); break;
            case 6: 
                cout << "Thank you for using our banking system!" << endl;
                return 0;
            default: 
                cout << "Invalid choice. Please try again." << endl;
        }
    }
    
    return 0;
}