Hello..

Look This both field is totally different at all..It depends on Your interest..I would like to tell The profiles & Job you will get after this both engineering

1-Mechanical Engineering-The main subjects you will learn In mechanical is machine design,Thermal Engineerig,Production,Manufacturing Technology,Operations Management

You will get The job profile as Design engineer,Production Engineer,Quality Engineer,Analytics Engineer.etc..& India is going to be manufacturing HUB in the next 4-5 years So definately mechanical Field has bright future but You also Have to Prepare yourself As per Current technology..

2-CSE-In Computer science You will learn about codes,computer software languages,,Website designing,Ops etc..

In CSE you will get better chance to Go to Foreign contry and make your future in abroad..

You will get lots of Diversity In Job profile in CSE.

You can expect A cubical, White coller, job For lifetime..

But believe me Choose your field according to Your Interest..

Thank You