No

Extension Exercises x 15 times x twice daily - lying on tummy, take left arm up for 3 seconds, then bring it down, right arm up for 3 seconds, bring down. Bring right leg up, hold for 3 seconds, bring it down. Then right leg up and hold for 3 seconds and bring it down. Repeat twice a day- 10 times Bhujang Asana -- Lie flat on your stomach, keeping the palms out, bend the neck backward, take a deep breath and while holding it for 6 seconds, raise the chest up. Release breath and relax your body. Repeat the exercise 15 times twice daily. Core Strengthening Exercises- Straight Leg Raised With Toes Turned Outward, repeat 10 times, twice a day. Chiropractic treatment. https://www.youtube.com/watch?v=HxvRQ9ZJ8vQ

Rehab Trainer or Sports Physiotherapist in gym can help. Check out some interesting things on posture in this video.

Before starting any exercises please consult with the Physiotherapist

Yes,but also go with some postural correction exercise after consulting nearby physiotherapist.

Yes with not only gym but with at home regular warm up exercises at daily routine will help you maintain proper posture.

Rounded shoulders could be a compensation for a lack of ability to control the core. Yes a generalised exercise program where you are working multiple areas would help.