venture of iit bombay vjti alumni specify the buffering value as an integer greater than then buffering action is performed with the indicated buffer size if negativethe buffer size is the system default(default behaviorhere is list of the different modes of opening file sr no modes description opens file for reading only the file pointer is placed at the beginning of the file this is the default mode rb opens file for reading only in binary format the file pointer is placed at the beginning of the file this is the default mode ropens file for both reading and writing the file pointer placed at the beginning of the file