Hello guys
I have a text file and name is test.txt
and the data are as
1 a1 a2 a3
2 b1 b2 b3
3 c1 c2 c3
4 d1 d2 d3
................
I can add record to the test file. but I can't update the record
I want to update record as
2 b11 b22 b33
and how can I delete record of 2???
help me guys