class Account {
  Account();
  Account(int = idnum, double creditLimit = 500.00);
  Account(double initBal, int idnum, double creditLimit = 100.00);
public:
  somefunction();
};
 
if (a > 0 && b > 0) {
  Account customer(a,b);
} else {
  Account customer;
}
 
customer.somefunction();

if (a > 0 && b > 0) { // New block started
  Account customer(a,b); // Local variable defined (on the stack)
} else { // Prev. bock is ended. Another block started.
  Account customer; // Local variable defined
} // All customers dead... RIP...
// Alas, no customers here...

#include <iostream>
 
class Account {
public:
	Account() : initBal(0),idnum(0),creditLimit(0.0) {}
	Account(int id): idnum(id) 
	{
		initBal=100;
		creditLimit=500.0;
	}
	Account(int balance,int id): initBal(balance),idnum(id) 
	{
		creditLimit=100.0;
	}
public:
  void somefunction()
  {
		  std::cout<<"Initial balance is: "<<initBal<<std::endl;
		  std::cout<<"id is: "<<idnum<<std::endl;
		  std::cout<<"credit Limit is: "<<creditLimit<<std::endl;
  }
  Account& operator=(const Account& other)
  {
	 if (&other != this) 
	 {
		 initBal = other.initBal;
		 idnum = other.idnum;
		 creditLimit = other.creditLimit;
	 }
	 return *this;
  }
private:
	int initBal;
	int idnum;
	double creditLimit;
};
 
int main()
{	
	Account customer;
	int a,b;
 
	std::cout<<"please enter a value for a: "<<std::endl;
	std::cin>>a;
	std::cout<<"please enter a value for b: "<<std::endl;
	std::cin>>b;
 
	if (a > 0 && b == 0) 
	{
		Account alocalcustomer(a);
		customer = alocalcustomer;
	} 
	else if (a > 0 && b > 0)
	{
		Account anotherlocalcustomer(a,b);
		customer = anotherlocalcustomer;
	}
	customer.somefunction();
	return 0;
}

//---------1st case :
please enter a value for a:
0
please enter a value for b:
-1
Initial balance is: 0
id is: 0
credit Limit is: 0
//---------2nd case :
please enter a value for a:
1
please enter a value for b:
0
Initial balance is: 100
id is: 1
credit Limit is: 500
//---------3rd case :
please enter a value for a:
2
please enter a value for b:
320
Initial balance is: 2
id is: 320
credit Limit is: 100

Account customer;
...
if (a > 0 && b > 0)
   customer = Account(a,b);
customer.somefunction();