chip: 读取逗号文件(fgetc)

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void my_read ()
{
    FILE *fp;
    if ( (fp = fopen ("image_demo.txt", "r")) == NULL)
    {
        perror ("Open file image_demo.txt\n");
        exit (1);
    }
    int ch;
    char temp[128];
    int j = 0;
    while ( (ch = fgetc(fp)) != EOF)
    {
        temp[j] = ch;
        j < 127 ? j++ : j = 0;
        if (ch == ',')
        {
            temp[j] = '\0';
            j = 0;
            char c = strtol (temp, NULL, 16);
            printf ("%.2X,", c);
        }
    }
    fclose (fp);
}