C program to store I million student records in 10 different data files and implement the following facilities. (i) Sorting the records in the files based on roll no as the key and merging them into a single file (ii) Search for a particular record (rollno will be given as input) (iii) Display the selected set of records (based on range of rollnos) (iv) Insert a record in the file (v) Delete a record from the file (vi) Search for a particular record (name will be given as input)

time taken to retrive the recored is <1 second.data structure used is hash table.