Thread: File I/O with sort

Hello,

How can I read a file with student number, student name, grade and sort it regarding student number, student name or grades and write it to a new file?

This is not a homework question I have an exam and I am studying and probably something like this will be asked.

Thank you in advance.

Pseudo C:

Code:

fin = open_file();
array = new_Array();   // we'll store in array and sort.
i = 0;
while ( more_record(fin) ) {
   record = get_record(fin);
   store_in_array(array,i,record);          
   ++i;
 }   
   
   qsort();    // pass your comparison function.
   write_to_outfile();

Make a struct student with all of the fields you want, then make an array of these structs to store the data from the input file. Once that is done, the sorting is simply a matter of passing your array to any sorting algorithm you care to use.