Thread: confused!

Hi everybody,

1) as per requirement my prog.should handle a file with no records ,1 record or many records.....

I am not sure how to handle a file with no records.....in it.

2) Now as per my code, if there are no records then too value of tmprec(i.e. Number of current records in the file)increases to 1...
but actually it should remain 0 ........


Pls. let me know where I am going wrong......Thanks a lot.



my code:

Code:

int adatabase(competitor database[], int &tmprec , int &tempID)
{
     int i =0;
    //tmprec = Number of current records.

    ifstream inputFile("records.txt", ios::in );
    
    tempID=  atoi(readFileLine(inputFile).c_str());// latest ID
   
 //if inputfile is empty ....tmp rec == 0;????I am not sure how to approach this//
		

   while(!inputFile.eof() && tmprec < DATABASESIZE)
   {
			
     database[tmprec].competitorName= readFileLine(inputFile);
     database[tmprec].ID = atoi(readFileLine(inputFile).c_str());
     database[tmprec].compGender = readFileLine(inputFile);
    database[tmprec].birthDate.day= atoi(readFileLine (inputFile).c_str());
      database[tmprec].birthDate.month = atoi(readFileLine(inputFile).c_str());
    database[tmprec].birthDate.year = atoi(readFileLine(inputFile).c_str());
   tmprec= tmprec++; 

   }


return tmprec;
return tempID;

}

12 reads,but still no reply??help this beginner out.....
Btw, why cant I log in as butterfly........I am already registered as butterfly.

What is 'readFileLine'? please include all necessary components needed to analyze this.

Sorry.....If I have caused any trouble.......But I am genuinely not demanding......the way this board helps the newbies is impressive ,so I believe , I too will get better response....My Q is also not based on any advanced topic , also i am not asking for the entire code..... unlike other guys....I am just asking to point out where my logic is going wrong.....
Anway ur right in one way.......

thanks achaacha ..for showing interest ...

this is the readFileLine funcn

Code:

string readFileLine(ifstream &inputFile)
{
    char buffer[SIZE];
    inputFile.getline(buffer, SIZE, '\n');
    return buffer;
}

readFileLine(inputFile).c_str());// latest ID

Don't think you can do this because c_str() is a std string specific function. You can't do this on a char array.


inputFile.getline(buffer, SIZE, '\n');

Watch out with this because if someone entered SIZE characters, it would over run the buffer because the null terminator is added to the end.

Start with that and see how far you can go.

Hi,

Skipper as per ur suggestion......I just tried to implement the tellg()funcn like this....

Code:

int x =inputFile.tellg();
cout<<x<<endl;

I tried using that 0, ios::end inside the tellg function, but err is shown --- 'tellg' : function does not take 2 parameters
the ouput is 2 , even if my text file is empty....can u enlighten me pls??thanks......

Thanks a lot Skipper......
I was able to solve it...

golfingguy4, ur right.....but I don have any alternative ,my teacher wants this function..
no other way of accepting the contents are allowed...
Also ID is a string rather than char array...so its working ....
thanks anway for replying to this thread....