undefined reference to WinMain@16 (codeblocks)

Question

When I compile my secrypt.cpp program, my compiler shows the error \"undefined reference to WinMain@16\". my code is as follows

secrypt.h :

Answer 1

Well I know this answer is not an experienced programmer's approach and of an Old It consultant , but it worked for me .

the answer is "TRY TURNING IT ON AND OFF" . restart codeblocks and it works well reminds me of the 2006 comedy show It Crowd .