how can i create my own languaje

As already suggested you need to create a compiler.
Generally speaking creating a compiler is a rather difficult task. However it really depends on the requirements of your language (a simple and 'regular' language would make your task easier). Anyway you need some background on compiler construction techniques. I might suggest:

• The dragon book - (already suggested) provides a strong theoretical approach.
• lcc, A Retargetable Compiler for ANSI C[^] - shows a complete implementation of a C compiler (might be the 'natural' practical complement of the dragon book).

You may find more 'introductory' material in

• Wirth's Compiler Construction [^] - freely available, it shows neatly the complete implementation of a simple language.
• Crenshaw's Let's build a compiler[^] - freely available, has a very simple, pragmatical approach.

It is worthy nothing there are many tools that try to automate the 'compiler generation' process. The classical example is bison[^]/flex[^] pair, while a more recent one is ANTLR[^] (if you you find yourself creative then have a look at the LPeg Lua[^] library).
Since you tagged your question as C++, I should also mention the Boost Spirit[^] library.

To do that you need to write your own compiler. I am not sure what 1 means - create your own variable type ? You can use macros to create new names for existing things, but something brand new, you need to write a compiler to understand your new objects. The first version of C++ just turned C++ in to C and then ran a C compiler on it, so perhaps you can do something similar.

Good luck for your nice thought.Language creation is not simple as you think.
it has it's own risk. First you should create a pre-compiler.
pls refer the link below.
Create Your Own Programming Language

Use the typedef keyword to create your own custom data types from other types.

using namespace std; 

typedef union _unEjemplo
{ 
   int A; 
   char B; 
   double C; 
}  tdUnionEjemplo; 


int main() 
{ 
   tdUnionEjemplo UnionEjemplo;

   UnionEjemplo.A = 100; 
   cout << UnionEjemplo.A << endl; 
   UnionEjemplo.B = 'a';

   return 0;
}