Singleton class

[Raj]

Wrote a piece of code implementing singleton class with private
constructor and static function returing pointer the object.Code is
compiled successfully. But throwing a linking error Singletonclass.exe
: fatal error LNK1120: 1 unresolved externals.
when I tried to create object from main like this
singleton *obj = singleton::Instance();
Would anyone tell me why?

 

[tropos]

Wrote a piece of code implementing singleton class with private
constructor and static function returing pointer the object.Code is
compiled successfully. But throwing a linking error Singletonclass.exe
: fatal error LNK1120: 1 unresolved externals.
when I tried to create object from main like this
singleton *obj = singleton::Instance();
Would anyone tell me why?

Check your Makefile. Sounds like you didnt bring your Singleton.o
object file into the build. Or show us the Singleton.h and
Singleton.cpp code.

Tropos

 

[Krishanu Debnath]

Wrote a piece of code implementing singleton class with private
constructor and static function returing pointer the object.Code is
compiled successfully. But throwing a linking error Singletonclass.exe
: fatal error LNK1120: 1 unresolved externals.
when I tried to create object from main like this
singleton *obj = singleton::Instance();
Would anyone tell me why?

Yes, you are doing something wrong at line no 35.

Krishanu

 

[Raj]

Thanks for ur reply..But the problem was something else.I did not
initialise the static pointer I was using...But got any idea why it was
not detected by the compiier but only during linking?