Thread: Character in a String

I'm trying to make a function that turns a filename into a shorter name. For example "c:\windows\clouds.bmp" to "clouds". The problem comes at sname[s]=c; Does anyone know what the problem is? I have no idea. It doesn't give me a compliler error, but I get an assembly error (I use borland).

Code:

void ShortenFileName(char fname[0xff], char sname[0xff]) {
    int f=0, s=0;
    char c;
    do {
        c = fname[f];
        if (c=='.' || c=='\0') {
            sname[s]='\0';
            return;
        }
        sname[s]=c;
        s++;
        if (c=='\\') {
            s=0;
        }
    }
    while(true);
}