The file sample does not exist while fopen is being executed

The file sample could not be created for writing

fpt is declared as a FILE pointer

The file sample is read only

fp is a file pointer

position the read-write-head at the start of the file

position the read-write-head at the end of the file

None of these

Stack

Queue

List

None of these

reading is possible

writing is possible

both reading is possible & writing is possible

all the above comments are true

after write operation reading is possible without closing and re-opening

reading is possible

writing is possible

All of the above