The C stands for the crescent and the plus serves as an improvised star both of them depicted side by side in the Turkish flag.
C+ can be used as a means for easy national identification as well as for presenting oneself patriotic and spreading a feeling of coherence among Turkish folks in internet chat rooms etc.
No relation with C/C++ programming languages!
SweeTtannedGurly16: C+ ^^
Richsimm0nsreloaded: much diversity in names here -.-
osmanlikahraman: C+ C+ C+ 4 LIFE!!
freekyJoe@CS1.6: actually I like Java more