🚀 go-pugleaf

A transcation processing program
-using a random access file
-maintain a bank's account information
update
1 name
2 every grade
3 average

*operations
    create a random access file(data is null)
    add new records(accounts)
    delete records(caaounts)
    updates existing records(accounts)
    prints all records in a text file

1   create a random access file sequentially

2   add a record into account-file
get a account#(key files)
let file-position-pointer move to correspond record
read this record (using method seek(....))
make sure this record hasn't data(account = =0)
let file-position-pointermove to this account#������record�B~~
write the data;

3   delete a record from account-file
get a account#(key files)
let file-position-pointer move to correspond record
make sure this record has data(account !=0)
output the data(if neccesary)
let this record change to noneuse

4   update an existing record
get the update record account#
let file-position-pointer���P��account#������record�B
and read this record's data
make sure this record have data(account#1=0)
��J���諸�涵���θ��
let file-position-pointer�@�P��account#������record�B~~
let new data be written into this record

5   print all records in a text file
let file-position-point �����ɮ׶}�l��m
use roop ���ɮ��Y�ܧ� sequentially read data
�T�{�O�_�s�����
if yes,let this record's data write this text file







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