can anyone help me in making a c program for displaying the grades(A(>60),B(45>b<60),C(30>c<45),F(fail)) of students in the form of histograms
and for each grade calculation and histogram we need to use pthreads!!! so that it satisfies parallel processing!!

Is it neccessary? Even if so, we might help if you should try first. Nevertheless, what is your OS? On Linux, it is straight, but on Windows, you should install mingw (http://www.mingw.org/)
and POSIX Threads for Win32 (http://www.sourceware.org/pthreads-win32/).
Here is an example of how to use pthread,
http://timmurphy.org/2010/05/04/pthreads-in-c-a-minimal-working-example/
Hope this helps!

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