Constructors with Points and returning objects with functions, oh my!

equity (5)
Hi,


I'm currently stuck on a problem involving returning an object using a function.I'm very ashamed I can't get this problem on my own, so I was wondering if any users here could possibly point me in the right direction. Be forewarned this is rather lengthy, so will do my best to explain.

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class set{


public:
       set(){};
      
         set(string* q){
             string*  p = q;
             
            
              };
      
 
     
 set set_union(set otherSet ) {
    
  /*  
    int j = cardinality();  
  int i = otherSet.cardinality();   
 
  int k = i + j; 
 int l = k -i;
 int l2 = k -j; 
 */ 
  string s[100];
 

string * u ;
u = s; 
 
    
 return  set(u);   
    // The /* */ is just blocked out code that will be used to combine sets.
     };


With this code segment I get an error

In copy constructor `std::basic_ios<char, std::char_traits<char> >::basic_ios(const std::basic_ios<char, std::char_traits<char> >&)':

<more errors>

Then a very strange thing happens.

I get a file named ios_base.h with a highlighted line at this part

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<more code above>
/ _GLIBCXX_RESOLVE_LIB_DEFECTS
  // 50.  Copy constructor and assignment operator of ios_base
  private:
    ios_base(const ios_base&);

    ios_base&
    operator=(const ios_base&);
<more code below> 
 };


The file that is opened is a rigorous 927 lines of code I can't grasp with my current knowledge of the langue.


In attempting to trouble shoot this issue, I believe this is what be wrong, but can't confirm via Google/c++ book/ data structures book.

(Now, I do get a website for the actual large error message, but the context of the page is for iostreams.)

I believe it is either
1. Compiler is wrong, unlikely.

or

2. I ignored some very important rule of the language as the ios_bas.h appearing.

However, I'm assuming IOS here means input output stream, but the problem isn't with that as the file is being read correctly...

Total time debugging: 10 hours.
Total time coding whole file(not being scene): 13 hours.

No, complaints though have learned a lot!


Any pointers on this problem(no pun attended)?



ciphermagi (807)
You sure that's the whole class? I see 3 opening brackets, and only two closing.
equity (5)
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#include <fstream>
#include <string>
#include<iostream>

using namespace std;

class set{


public:
       set(){};
      
         set(string* q){
             string*  p = q;
             
            
              };
      
 
     
 set set_union(set otherSet ) {
    
    
    int j = cardinality();  
  int i = otherSet.cardinality();   
 
  int k = i + j; 
 int l = k -i;
 int l2 = k -j; 
  
  string s[100];
 // s = new string [k];  

string * u ;
u = s; 
 
    
 return  set(u);   
    
     };
     
                            
void fill_array(string nameoffile);
int cardinality();
bool isMember(string s);  
int size;

          
                 string* p ;
                 ifstream file_check; 
                 

  
  
      };
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                  
     void set:: fill_array(string nameoffile)
          {
               file_check.open(nameoffile.c_str( ));
if (file_check.fail())
         {
cout << "Input file opening failed.  " << endl;
cout << "**************************" << endl;
cout << "*****ABORTING PROGRAM*****" << endl;
cout << "**************************" << endl;     
 abort();}
int size = 6; 
 p = new string [size] ;
 string next; 
int i = 0; 
 while(file_check >> next)
{
                    
 p[i] = next ;           

  i++;          
    
 if (i == size)
 {
       string *save = new string[size * 2];
for ( int i = 0; i < size; i++ )
      save[i] = p[i];
       size *= 2;
       
       delete[]p;
       p = save;
       }

  
  
}
 file_check.close();
	 }
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~              
               
 int set:: cardinality(){
 int i = 0; 
 while (!p[i].empty())
{
 i++;
}
size = i; 
 return i; 
}
  
  
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`
  
// have to find the current size, as they could want to know sizze of the new set. 
  
bool set :: isMember(string s){
    
     int current_size = 0;  
 while (!p[current_size].empty())
{
 current_size++;
}
     
     
   for(int i = 0; i <= current_size; i++)
     {
     if( p[i].compare(s) != 0)
   
     return false;
break;
}  
  
     
     
     return true;
    
     
     
     }



Is the whole class. It is not set up in terms of C++ standards(syntax). This is also using the Dev Bloodshed C++ IDE.

the //~~~~~~~~~~~~~~~~~~~~~~ separates the functions. All of them work as is with no errors, I understand there might be a logic problems, but haven't began the whole debugging processes due to my lack of knowledge of returning objects :(
Last edited on
equity (5)
Summary of class is: take in a file store each words in a dynamic array. I'm currently trying to combine two arrays in two objects via an array filled with strings and return them.

But, It won't allow me to even return a pointer in a function ....so am currently working on why they won't work and getting big error explained in the 1st post :(

Something so simple wants to blow up my computer :/
ciphermagi (807)
When I see the error that you pointed out in the first post, I see an error that, when I get it, generally means that I used one of the templates defined in a library incorrectly. I'm getting a headache trying to decipher the indents in your code, though, so I have to take a break.
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