Programmer Joke

A programmer fell in love with a lady.One day they met in a park.
As our programmer is a Chain Smoker he always smokes.
On one day lady gets irritated with the smoke and says to her lover:
"Can't you see the warning written on the cigarettes packet, smoking is injurious to health!"

The boy replies back:
"Darling, I am a programmer. We don't worry about warnings, we only worry about errors."