3a.cpp

#include <iostream> 
#include <string> 
using namespace std; 
class Bank { 
private: 
    int accNum; 
    string name; 
    double balance; 
 
public: 
    Bank(int acno, string acname, double bal) { 
        accNum = acno;   
        name = acname; 
        balance = bal; 
    } 
     
    void deposit(double depo) { 
        if (depo > 0) { 
            balance += depo;  
            cout << "Total balance: " << balance << endl; 
        } else { 
            cout << "Deposit not allowed: Amount must be positive" 
<< endl; 
        } 
    } 
    void withdraw(double amt) { 
        if (amt > 0 && amt <= balance) { 
            balance -= amt; 
            cout << "Withdrawal successful. Remaining balance: " << 
balance << endl; 
        } else if (amt > balance) { 
            cout << "Insufficient balance!" << endl; 
        } else { 
           cout << "Withdrawal amount must be positive" << endl; 
        } 
    } 
    void dispBalance() { 
        cout << "Acc num: " << accNum << endl; 
        cout << "Acc name: " << name << endl; 
        cout << "Acc balance: " << balance << endl; 
    } 
}; 
 
int main() {   
    Bank ob1(2521025, "Kruthika", 25000.0);  
    ob1.dispBalance();  
    ob1.deposit(12000.0); 
    ob1.withdraw(5000.0); 
    ob1.withdraw(50000.0); 
    ob1.withdraw(-100); 
    return 0;  
}