I've been working out for a long time now and I still don't have a six pack, what do I do?

How long have you been working out"
How often each week?
How long for each workout?
What have you been doing to work out?
Do you have a workout plan or trainer?

Most people can achieve good tummy muscles but the problem that it is covered with fat
To show your six pack you must reduce your body fat by diet