2. a) Define a structure to store roll no, name and marks of a student.
b) Using the structure of Q2. a), above write a ''C'' program to create a file "student.dat". There must be one record for every student in the file. Accept the data from the user.
c) Using the "student.dat" of Q2. b), above write a ''C'' program to search for the details of the student whose name is entered by the user.