Programming language Compiler
A compiler is a computer program which translates source programming language into user’s target programming language . If anyone wants to know about compiling then the definition should be “ A compiler does that what is compiling ” .
It transforms source programming language in binary or machine language code . Humans can read their languages but a computer can’t . Human’s greatest invention computer only knows its own language. So , we can say a compiler first transforms a higher level programming language into binary. Then computer reads it and gives output .
If anyone wants to turn a programming language into another programming language then he has to transform the binary code which was compiled earlier into his target language . This is called compiling too .