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Solved

Program doesn't return right value

Posted on 2003-10-21
6
257 Views
Last Modified: 2010-04-01
This code will only return a 'C' for author's name.  How do I get the length to display any size name?
#include <iostream.h>
#include <conio.h>
#include <string.h>
       
class Book;    // forward reference
//--------------------------------------------------------------------    
class Author
{
      friend void displayInfo(Author auth, Book trans);
      private:
            char title;
            char authorname;
            double price;
      public:
            Author(char chr = ' ', const char chr2 = ' ', const double balance = 0.0);
};
Author::Author(char chr, const char chr2, const double balance)
{
//      strcpy(title, chr);
      title = chr;
      authorname = chr2;
      price = balance;
}
//--------------------------------------------------------------------
class Book
{
      friend void displayInfo(Author auth, Book trans);
private:
      char name;
      char address;
      double royalty;
public:
      Book(const char chr3 = ' ', const char chr4 = ' ' , const double amt = 0.0);
};
Book::Book(const char chr3, const char chr4, const double amt)
{
      name = chr3;
      address = chr4;
      royalty = amt;
}
//--------------------------------------------------------------------
void displayInfo(Author auth, Book trans)
{
      cout<<"Book title: "<<auth.title<<endl;
      cout<<"Author:     "<<auth.authorname<<endl;
      cout<<"Price:      "<<auth.price<<endl;
      cout<<"Name:       "<<trans.name<<endl;
      cout<<"Address:    "<<trans.address<<endl;
      cout<<"Royalty:    "<<trans.royalty<<"%"<<endl;
}
//--------------------------------------------------------------------
void main()
{
      Author onePatron('C', 'L', 19.99);
         Book onePayment('N', 'A', 50.00);
      displayInfo(onePatron, onePayment);

      getch();
}
      

Thank you.
0
Comment
Question by:redice
6 Comments
 
LVL 2

Accepted Solution

by:
muskad202 earned 125 total points
ID: 9590419
#include <iostream.h>
#include <conio.h>
#include <string.h>
       
class Book;    // forward reference
//--------------------------------------------------------------------    
class Author
{
     friend void displayInfo(Author auth, Book trans);
     private:
          char *title;
          char *authorname;
          double price;
     public:
          Author(char *chr = "", char *chr2 = "", const double balance = 0.0);
};
Author::Author(char *chr, char *chr2, const double balance)
{
     //strcpy(title, chr);
     title = chr;
     authorname = chr2;
     price = balance;
}
//--------------------------------------------------------------------
class Book
{
     friend void displayInfo(Author auth, Book trans);
private:
     char *name;
     char *address;
     double royalty;
public:
     Book(char* chr3 = "", char* chr4 = "" , const double amt = 0.0);
};
Book::Book( char *chr3, char *chr4, const double amt)
{
     name = chr3;
     address = chr4;
     royalty = amt;
}
//--------------------------------------------------------------------
void displayInfo(Author auth, Book trans)
{
     cout<<"Book title: "<<auth.title<<endl;
     cout<<"Author:     "<<auth.authorname<<endl;
     cout<<"Price:      "<<auth.price<<endl;
     cout<<"Name:       "<<trans.name<<endl;
     cout<<"Address:    "<<trans.address<<endl;
     cout<<"Royalty:    "<<trans.royalty<<"%"<<endl;
}
//--------------------------------------------------------------------
void main()
{
     Author onePatron("TheTitle", "TheAuthor", 19.99);
        Book onePayment("TheName", "TheAddress", 50.00);
     displayInfo(onePatron, onePayment);

     getch();
}
0
 
LVL 2

Assisted Solution

by:carribus
carribus earned 125 total points
ID: 9590430
The code will only display a 'C' for the Author name, because that's all you put in. You might want to revisit your class declaration. Seeing as you're using C++, I'm going use the standard C++ library:

---------------<SNIP>----------------

#include <iostream>
#include <conio.h>
#include <string>        // stdcpp include to include the std::string class in your code

using namespace std;  // using the standard cpp lib namespace

class Book;    // forward reference
//--------------------------------------------------------------------    
class Author
{
     friend void displayInfo(Author auth, Book trans);
     private:
          string title;
          string authorname;
          double price;
     public:
          Author(string _title = "", string _name = "", const double balance = 0.0);
};
Author::Author(string _title, string _name, const double balance)
{
//     strcpy(title, chr);
     title = _title;
     authorname = _name;
     price = balance;
}
//--------------------------------------------------------------------
class Book
{
     friend void displayInfo(Author auth, Book trans);
private:
     string name;
     string address;
     double royalty;
public:
     Book(string _name = "", string _address = "" , const double amt = 0.0);
};
Book::Book(string _name, string _address, const double amt)
{
     name = _name;
     address = _address;
     royalty = amt;
}
//--------------------------------------------------------------------
void displayInfo(Author auth, Book trans)
{
     cout<<"Book title: "<<auth.title<<endl;
     cout<<"Author:     "<<auth.authorname<<endl;
     cout<<"Price:      "<<auth.price<<endl;
     cout<<"Name:       "<<trans.name<<endl;
     cout<<"Address:    "<<trans.address<<endl;
     cout<<"Royalty:    "<<trans.royalty<<"%"<<endl;
}
//--------------------------------------------------------------------
void main()
{
     Author onePatron("Author Title", "Author Name", 19.99);
        Book onePayment("Book Name", "Book Address", 50.00);
     displayInfo(onePatron, onePayment);

     getch();
}

---------------<SNIP>----------------

Does this answer your question?
0
 

Author Comment

by:redice
ID: 9590455
Yes,  Thanks for all of your help.  Have a great day.
0
 
LVL 2

Expert Comment

by:carribus
ID: 9590489
Sure thing :)
0
 
LVL 11

Expert Comment

by:bcladd
ID: 10481834
sNo comment has been added lately, so it's time to clean up this TA. I will
leave a recommendation in the Cleanup topic area that this question is:

Answered: Points split between muskad202 and carribus

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