Use variable from function in one cpp file in another cpp file c++ -


i'm sending variable function 1 cpp file using header file , extern. issue files not filled when arrive second cpp file.

//tmp.h  //declare tmp_user , tmp_pass extern ustring tmp_user; extern ustring tmp_pass;    //tmpone.cpp //define tmp_user , tmp_pass #include "tmp.h"  ustring tmp_user; //define outside of function ustring tmp_pass;  function(blah, blah){         tmp_user = username; //fill variable within function     tmp_pass = password; //more code }    //tmptwo.cpp //use defined variables #include "tmp.h"  login(tmp_user, tmp_pass) //both of defined variables empty. {     //some function }

my issue both of variables empty when called in second cpp file. i'm using visual studio 2010 , both of cpp files in same project.


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