给出下列的银行账户类的构造函数的代码。
// #include <cstring> // class definition class BankAccount { private; char name[40]; // or std::string name; char acctnum[25]; // or std::string acctnum; double balance; public; BankAccout(const char * client, const char * num, double bal = 0.0); //or BankAccout(const std::string & client, // const std::string & num,double bal = 0.0); void show(void) const; void deposit(double cash); void withdraw(double cash); };