Updating a file rondom access
So the problem is that you have an else without an if.
I fixed the bracket problem and was getting garbage values when the program compiled.
A discussion of sequential file I/O operation begins on page 45 of your MS Basic manual (ver.
Before moving forward or backward within a file, one important factor is the current position inside the file.
Therefore, we must understand that there is a concept of file position (or position inside a file) i.e. While reading from and writing into a file, we should be very clear from where (which location inside the file) our process of reading or writing will start.
Likewise, we intend to move in the backward direction by providing a negative number.
By writing: The file pointer will move 10 bytes in the backward direction from the current position.