What the difference between the header " " et < > ?

Question

hi guys..can you tell me what the difference between the header included with " " and the other included with < > ?

Answer 1

For #include <filename> the preprocessor searches in an implementation dependent manner, normally in search directories pre-designated by the compiler/IDE. This method is normally used to include standard library header files.

For #include "filename" the preprocessor searches first in the same directory as the file containing the directive, and then follows the search path used for the #include <filename> form. This method is normally used to include programmer-defined header files.

https://stackoverflow.com/questions/21593/what-is-the-difference-between-include-filename-and-include-filename

Answer 2

thank you guys :)