c compiling using clang

[Arnab Bhowmick]

I am new to Freebsd. I want to practice c programming for my college
projects. I have wrote some program but when i am trying to compile the
program by using
% cc filename.c its showing % not found. I went through the handbook but
did not understand the process. Previously i have used clang compiler on
Ununtu but i think that it is a little bit tricky to compile c under
freebsd. Can anyone say how to resolve this?