34.cpp

银行开户 存入 取出 显示现在余额问题

#include<iostream.h>
#include<string.h>
class Account
{
private:
	char mName[20];      //银行账户的户名
	long mSN;         //本账户的帐号
	float mBalance;   //本账户当前的余额
public:

	Account(char name[],long num,float amount=0);	//类的构造函数
    ~Account(){};  //类的析构函数
 
	void deposit(float amount); //往账户中存款
float withdraw(float amount); //从账户中取款
    float getBalance();  //查询余额
};
Account::Account(char name[],long num,float amount)
{ strcpy(mName,name);
	mSN=num; mBalance=amount;}

void Account::deposit(float amount)
{mBalance+=amount;}

float Account::withdraw(float amount)
{mBalance-=amount;
return amount;}

float Account::getBalance()
{cout<<"  帐户户名："<<mName<<"   帐号："<<mSN<<endl<<"余额：";
	return mBalance;}

void main()
{
char n[50];int nu; float am,c,q;
cin>>n>>nu>>am;
 Account a(n,nu,am);
cout<<a.getBalance()<<endl;
cin>>c;
a.deposit(c);
cout<<a.getBalance()<<endl;
cin>>q;
a.withdraw(q);
cout<<a.getBalance()<<endl;

}