Classes:

This is a discussion on Classes: within the C++ Programming forums, part of the General Programming Boards category; I am having a hard time with classes. What is going on with this code. It has errors all over ...

  1. #1
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    Classes:

    I am having a hard time with classes. What is going on with this code. It has errors all over it.
    Code:
     #include <iostream>
    #include <string>
    
    using namespace std;
    
    class addressBook {
        
    public:
       explicit addressBook(string streetaddy, string phoneNumber)
        : street(streetaddy) 
        : phone (phoneNumber)
        {
        
        }
        
        void Address(string streetAddy)
        {
            street = streetAddy;
        }
        
        void PhoneNum(string phoneNumber)
        {
            phone = phoneNumber;
        }
        string getPhoneNum() const
        {
            return phone;
        }
        string getAddress() const
        {
            return street;
        }
        void displayAddressBook()
        {
        
        }
    private:
        string street;
        string phone;
    };
    
    
    
    int main(int argc, const char * argv[])
    {
        addressBook address1("New York Way", "555-555-5554");
        addressBook address2("New Jersey Bld","678-979-9999");
        
        cout << "The first address is:"<<addressBook1.getAddress<<"\n"<< addressBook1.getPhoneNum<<endl;
        
        return 0;
    }
    Last edited by jocdrew21; 09-08-2013 at 11:17 AM.

  2. #2
    C++ Witch laserlight's Avatar
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    What might the error messages be?
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

  3. #3
    "I Win!" by U. Lose vart's Avatar
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    line 10,11 - you need to remove string -
    Code:
    : street(streetaddy),phone (phoneNumber)
    and use : only once, after that only ,

    line 49 - there is function call but missing ()
    Code:
    addressBook1.getAddress()
    To be or not to be == true

  4. #4
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    Code:
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    class addressBook {
        
    public:
       explicit addressBook(string streetaddy, string phoneNumber)
        : street(streetaddy), phone (phoneNumber)
         
        {
        
        }
        
        void Address(string streetAddy)
        {
            street = streetAddy;
        }
        
        void PhoneNum(string phoneNumber)
        {
            phone = phoneNumber;
        }
        string getPhoneNum() const
        {
            return phone;
        }
        string getAddress() const
        {
            return street;
        }
        void displayAddressBook()
        {
        
        }
    private:
        string street;
        string phone;
    };
    
    
    
    int main(int argc, const char * argv[])
    {
        addressBook address1("New York Way", "555-555-5554");
        addressBook address2("New Jersey Bld","678-979-9999");
        
        cout << "The first address is:"<<addressBook1.getAddress()<<"\n"<< addressBook1.getPhoneNum()<<endl;
         cout << "The second address is:"<<addressBook2.getAddress()<<"\n"<< addressBook2.getPhoneNum()<<endl;
        return 0;
    }
    Error- Use of undeclared identifier (lines 49 and 50)

  5. #5
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    guess it would help if displayAddressBook was not blank!!!

    O man....

  6. #6
    C++ Witch laserlight's Avatar
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    address1 and addressBook1 are different names.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

  7. #7
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    Code:
     int main(int argc, const char * argv[])
    {
        addressBook address1("New York Way", "555-555-5554");
        addressBook address2("New Jersey Bld","678-979-9999");
        
        cout << "The first address is:"<<address1.getAddress()<<"\n "<< address1.getPhoneNum()<<endl;
         cout << "The second address is:"<<address2.getAddress()<<"\n "<< address2.getPhoneNum()<<endl;
        return 0;
    }
    GOT IT THANK YOU!!!!

    I'll make a few more programs up to make sure I got it. Just started to learn about .h files and classes. I think I got a grip of the concept now, just have to practice.

  8. #8
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    why do you have a class called "addressBook" that only stores one address? it may be a minor point, but on this forum, we like to emphasize the idea of naming things in ways that properly represent them. often this gets applied to things like single-letter variable names, but I think this case should also be addressed. in the real world, an address book can contain many addresses. if you plan to do this as a career someday, it would be good to keep this sort of thing in mind.
    Code:
    namespace life
    {
        const bool change = true;
    }

  9. #9
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    Will do thanks...

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