宣言是

Question

型

頭文件不兼容：

#ifndef H_bankAccount; 
#define H_bankAccount; 


class bankAccount 
{ 
public: 
    string getAcctOwnersName() const; 
    int getAcctNum() const; 
    double getBalance() const; 
    virtual void print() const; 

    void setAcctOwnersName(string); 
    void setAcctNum(int); 
    void setBalance(double); 

    virtual void deposit(double)=0; 
    virtual void withdraw(double)=0; 
    virtual void getMonthlyStatement()=0; 
    virtual void writeCheck() = 0; 
private: 
    string acctOwnersName; 
    int acctNum; 
    double acctBalance; 
}; 
#endif 

CPP文件：

#include "bankAccount.h" 
#include <string> 
#include <iostream> 
using std::string; 


string bankAccount::getAcctOwnersName() const 
{ 
    return acctOwnersName; 
} 
int bankAccount::getAcctNum() const 
{ 
    return acctNum; 
} 
double bankAccount::getBalance() const 
{ 
    return acctBalance; 
} 
void bankAccount::setAcctOwnersName(string name) 
{ 
    acctOwnersName=name; 
} 
void bankAccount::setAcctNum(int num) 
{ 
    acctNum=num; 
} 
void bankAccount::setBalance(double b) 
{ 
    acctBalance=b; 
} 
void bankAccount::print() const 
{ 
    std::cout << "Name on Account: " << getAcctOwnersName() << std::endl; 
    std::cout << "Account Id: " << getAcctNum() << std::endl; 
    std::cout << "Balance: " << getBalance() << std::endl; 
} 

請幫助getAcctOwnersName下，我得到一個錯誤，並setAcctOwnersName聲明，該聲明是「<錯誤 - 不兼容鍵入> bankAccount :: getAcctOwnersName（）const「。

Answer 1

您需要

#include <string> 

在bankAccount頭文件，並參考字符串作爲std::string。

#ifndef H_bankAccount; 
#define H_bankAccount; 

#include <string> 

class bankAccount 
{ 
public: 
    std::string getAcctOwnersName() const; 

    .... 

一旦它被包含在標題中，就不再需要將它包含在實現文件中。