What are compilers , linkers ?

Compiler is a program (software) that transforms source code* written in a programming language into a executable program.

Compiler translates source code from High level Programming Languages  (H.L.P.L) {C++, C, C#, Java} into a Low Level Programming Languages (L.L.P.L) {Machine Code or Assembly Language}
Why we writte in H.L.P.L ?
-Because we are humans and they're easy to read.
Why Compiler transforms it to L.L.P.L ?
-Because CPU reads only low level programming language as instructions.
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This Summer we're gonna learn C++ together .
You can download any c++ compilers but i recommend  you this >
Code:Blocks cause its easy to use