pub struct BankAccount {
    balance: f64,
}

impl BankAccount {
    pub fn new(initial_balance: f64) -> Self {
        BankAccount { balance: initial_balance }
    }

    pub fn deposit(&mut self, amount: f64) {
        if amount > 0.0 {
            self.balance += amount;
        }
    }

    pub fn withdraw(&mut self, amount: f64) -> bool {
        if amount > 0.0 && self.balance >= amount {
            self.balance -= amount;
            true
        } else {
            false
        }
    }

    pub fn balance(&self) -> f64 {
        self.balance
    }
}