int ReadImage (Image *I, char* FileName){
    /*    Function:        Reads in the image I (graylevel or color) from File
    The image header (the second of the file) might
    include a comment line, e.g. "# Created by Paint Shop Pro 7"
    Your code should be able to ignore it.
    Preconditions:   None
    Postconditions:  All the image pixels are read in and the image
    width and height recorded in the appropriate fields.
    If the image is a gray level one, then all the three
    color values of each pixel is set to intensity value of
    that pixel. It returns 1 for success and 0 for failure.
    ---------------------------------------------------------------------*/

    int cnt;
    int Height = 0, Width = 0, ColorCap = 0;
    char str[80];
    FILE *fp;

    fp = fopen(FileName, "r");
    fscanf(fp, "%s", str);

    if (strcmp (str, "P6") == 0) {
        fscanf (fp, "%s", str);
        if (str[0] == '#') {//Comment line
            while (getc(fp) != '\n') {};
            fscanf(fp, "%s", str);
            Width = atoi(str);
            I->Width = Width;
            fscanf(fp, "%s", str);
            Height = atoi(str);
            I->Height = Height;
        }
        else {
            Width = atoi(str);
            fscanf(fp, "%s", str);
        }
        fscanf(fp, "%s", str);
        ColorCap = atoi(str);

        cnt = 0;
        while(cnt < Height*Width*3){
            I->Value[cnt] = (unsigned int) (getc(fp));
            cnt++;
        }

        fclose(fp);

        return 1;
    }
    return 0;
}