OK. I am calling a function and passing data to it and I want to write to a file using ofstream. Now, it works except for the fact that the file keeps having records overwritten (probably because it's being opened and closed everytime the function is called).

Here's what the function looks like:

void *writeFile(void *argument, bool bPrime, long testNo, long *factor, int factorLimit)
{ int i;
ofstream outFile;
outFile.open((char *) argument, ios::out);

//Looks to see if the file is false.
if (!outFile)
cout<<"outFile is false\n";
if (outFile.good())
{ outFile.clear();
outFile.seekp(ios_base::end);
outFile <<"Number tested: " <<testNo <<endl;
if (bPrime == 1)
outFile <<"The number is prime."<<endl;
if (bPrime == 0)
{ outFile <<"The number isn't prime." <<endl
<<"Factors: ";
for (i=0; i<factorLimit; i++)
{ outFile <<factor[i];
if (i != factorLimit-1)
outFile<<", ";
}
}
outFile.close();
}
return NULL;
}

Why do all the records keep disappearing? Thanks.