hi,
i am very new to c++. i am getting system crash (not compilation error) in doing following:

i am declaring global pointer of class.

BGiftConfigFile  *bgiftConfig;
class BGiftConfigFile : public EftBarclaysGiftConfig { }

in this class i am reading tags from xml file. it is crashing system when this pointer is used to retrieve value. i am doing coding for verifone terminal.

int referenceSetting = bgiftConfig->getreferencesetting(); //system error

getreferencesetting() is member fuction of class EftBarclaysGiftConfig

i am confused about behavior of pointer in this case. i know i am doing something wrong but couldn't rectify it.

When i declare one object of class locally it retrieves the value properly.

BGiftConfigFile  bgiftConfig1; 
int referenceSetting = bgiftConfig1->getreferencesetting(); //working

But if i declare this object global it also crashes the system.

i need to fetch values at different location in my code so i forced to use someting global.

please suggest me how to rectify this problem.