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我遇到了構造函數的問題,我需要創建2個構造函數。 1.將參數設置爲安全空狀態的無參數構造函數。 2.雙參數的構造函數C++錯誤,類和構造函數
我得到的錯誤,當我分配一個值的對象變量。
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個參數)
CreditCard::CreditCard(long long num,char h[21]) { number=num; strcpy(holder,h); }
3.第三錯誤
long long CreditCard::number() const { return number; }
類(在頭文件)
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:得到混合了成員變量和函數(名稱)在該行
就是這樣。成員_variable_名稱中的單純的拼寫錯誤不會導致此錯誤。正確的名稱「數字」實際上是一個功能,確實如此。 –
兩種錯誤的組合比單獨一種診斷困難得多。 –
Welp,更快一點,並在正確的解釋中編輯。 +1 – Xarn