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我遇到了构造函数的问题,我需要创建2个构造函数。 1.将参数设置为安全空状态的无参数构造函数。 2.双参数的构造函数C++错误,类和构造函数
我得到的错误,当我分配一个值的对象变量。
CreditCard.cpp: In constructor âCreditCard::CreditCard()â:
CreditCard.cpp:8:11: error: invalid use of member (did you forget the â&â ?)
CreditCard.cpp: In constructor âCreditCard::CreditCard(long long int, char*)â:
CreditCard.cpp:15:11: error: invalid use of member (did you forget the â&â ?)
CreditCard.cpp: In member function âlong long int CreditCard::number() constâ:
CreditCard.cpp:32:12: error: argument of type âlong long int (CreditCard::)()constâ does not match âlong long intâ
1.CreditCard();
CreditCard::CreditCard() {
number=0;
strcpy(holder,"ABCD");
balances=0;
}
2.信用卡式(2个参数)
CreditCard::CreditCard(long long num,char h[21]) { number=num; strcpy(holder,h); }
3.第三错误
long long CreditCard::number() const { return number; }
类(在头文件)
class CreditCard {
long long int nubmer;
char holder[21];
double balances;
public:
/*declarations of constuctors */
CreditCard();
CreditCard(long long num,char h[21]);
void charge(double c);
void pay(double p);
long long number() const;
double balance() const;
const char* name() const;
};
UPDATE:得到混合了成员变量和函数(名称)在该行
就是这样。成员_variable_名称中的单纯的拼写错误不会导致此错误。正确的名称“数字”实际上是一个功能,确实如此。 –
两种错误的组合比单独一种诊断困难得多。 –
Welp,更快一点,并在正确的解释中编辑。 +1 – Xarn