Install g++ compiler on ubuntu

when i was compile some packages ,I met with the error --cannot find compiler g++.. .after searching on the net . I have found the key to it .
run the following command :
sudo apt-get install g++ ; to install g++ compiler
after having installed g++,
it might still cannot successfully compile the package,see the hint "Can't find X includes"

run the command :
sudo apt-get install kdebase-dev
then you may can use g++ to compile packages.