<html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> Ok problem solved, I needed to include stdlib.h, noob's issue! <div class="moz-cite-prefix">El 31/03/16 a las 13:43, Dani escribió: </div> <blockquote cite="mid:56FD0D4D.70909@gmail.com" type="cite"> <meta http-equiv="content-type" content="text/html; charset=utf-8"> Hi everyone, I am writing a C project for pc and android, and in some place I have to convert a gchar* to a guint64 value. On the PC I am using Ubuntu and it does the conversion successfully, but using the same code into the android ndk is not working right. The instruction I am using on both projects is: <blockquote>guint64 val = (guint64) strtoull(char_val, (char **)NULL, 10); </blockquote> Has anyone any clue why it is not working with android at all? Thanks Dani </blockquote> </body> </html>