hello guys , i want to earn c++ but i dont have it's compiler but i have c compiler so can i use it or i need c++ compiler and where can i get it

What system are you on that doesn't have a freely available C++ compiler?

You can use an online compiler if you want. That way you can compile your code and such.

>>i have c compiler so can i use it or i need c++ compiler and where can i get it

Depends on the C compiler you are using. Most modern compilers will compile both C and C++, depending on the file exten. *.c is normally compiled as C code while *.cpp or *.cc is compiled as c++. But you will have to test your compiler to find out how it behaves.