apt-get install cpp
Reading package lists... Done
Building dependency tree... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies.
  cpp: Depends: cpp-4.1 (>= 4.1.2-1) but 4.1.1-21 is to be installed
  locales: Depends: glibc-2.5-1
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).