Thread: Assertion Error on string class assignment

Sheesh...my problems continue now, but with a different flavor. I'm reading data in from a file, and the data is mostly jibberish. My goal is to extract only words, which are defined as sequences of letters. I have a little loop that I figured would do that for me. I don't want to do char by char input, as the file is huge, and that would be slow. Thus, I decided to read the file line by line into mem, and extract words from there. It appears to get the first word into temp2 correctly, but when I try to "reset" temp2 to be empty, I get an assertion error. Any ideas?

Code:

while(in)
        {
            getline(in, temp);
            for (j = 0; j < temp.size(); j++)
            {
                if (isalpha(temp[j]))
                    temp2 = temp2 + temp[j];
                else
                {
                    Files files;
                    files.setWord(temp2.c_str());
                    wordStruct.addWord(files, i);
                    temp2 = "";                    
                }
            }
            
        }

The Files class doesn't have anything to do with my problem...the difficulties lie with the temp2 variable which is a standard string object. I think the problem has to do with the fact that I used temp2.c_str()....but, I'm not positive. If this was the problem, then I don't know how to rememdy it.

Edit: I did a little bit of switching, etc, and I do not believe the problem is related to the temporary c_str() conversion....

I'll post the entire getData function, along with the Files.h header.

Code:

void getData(vector<char*>& directories, Word& wordStruct)
{
    ifstream in;
    string temp, temp2;
    int i = 0, j = 0;
    for (i = 0; i < 3; i++)
    {
        if (i == 0)
            in.open("f1.txt");
        if (i == 1)
            in.open("f2.txt");
        if (i == 2)
            in.open("f3.txt");
        while(in)
        {
            getline(in, temp);
            for (j = 0; j < temp.size(); j++)
            {
                if (isalpha(temp[j]))
                    temp2 = temp2 + temp[j];
                else
                {
                    Files files;
                    files.setWord(temp2.c_str());
                    wordStruct.addWord(files, i);
                    temp2 = "";                    
                }
            }
            
        }
        in.close();
    }
}


class Files
{
private:
    vector<int> fileList;
    char* word;

public:
    Files()
    { word = NULL; }
    ~Files()
    { if (word != NULL) delete word; word = NULL; }
    void addFile(int);
    char* getWord()
    { return word; }
    void setWord(const char*);
    void printFile();
};