[Dev-C++] question from a confused newbie about so much compiler-programs

[Andreas S. <and...@we...>]

hello,

i just downloaded the dev-cpp  file and installed it.  included is the c, 
cpp- compiler and other programs. i thought within the gnu software there 
ist one c-compiler and once c++-compiler but regarding the directories i 
find the following programs:

dev-cpp\bin:  c++.exe, c++filt.exe, cpp.exe, g++.exe, gcc.exe, 
mingw32-c++.exe, mingw32-g++.exe, mingw32-gcc.exe

dev-cpp\lib\gcc-lib\libmingw32\3.2: cc1.exe, cc1obj.exe, cc1plus.exe, cpp0.exe

what the hell are all these programs doing? and why are all these necessary ?
why there is not one c-compiler, one cpp-compiler and one preprocessor in 
the bin-directory ?

greetings
andreas