Dear all;

I want to sort and class the random data by using C programming. The below are example of th data:

Diameter Velocity
0.05 1.0
0.05 1.2
0.15 2.2
0.05 1.2
0.25 3.1
0.35 4.3
0.25 3.1
0.35 4.3
0.45 5.7
0.15 2.2
0.15 2.0

I want to get the maximum number of occurence of the velocity for a given size. If you look from above data so the result is:
0.05 = 1.2 (2 times)
0.15 = 2.2 (2 times)
etc...

Could you help me all? how to class the above data ? and also how to read the data in better way because the header is character.

Thanks for your help

Cheers
Marzuki

use a linked list of structures. Read a value from the file, search the list to see if its already in the list. If found just increment the count. Otherwise if not found then add a new node and initialize the count to 1. Note: for value in the below structure multiply the float read from the file by 100 to get an integer. Don't use floats in the structure because comparisons may be inexact.

>>and also how to read the data in better way because the header is character.
better than what? you didn't post any code.