Ok peeps doesn't matter where you are i need your help?

Well to introduce myself I am a mentally strong boy. I don't loose my heart easily but this time i put my heart and soul into this exam but i think i am going to fail by 2 or 3 point(need 24 and I reckon I will get 20 or 21) while my other friends cheated heavily and will probably get 30 or 40 out of 60 without even studying this subject. I am a computer science and engineering student and i can say proudly that I can tear 95% of my classmates to shreds when it comes to knowledge(bit of a ego i know but i really can if you see my practical performance and knowledge it is a truth) but this exam has got me worried. If I fail I have virtually nil chance of getting a campus placement. I am not a type of person who likes to blame others but it hurts when you practiced your heart out and others get a free pass(by cheating). What should i do i live in India if i do not get campus placement is their enough scope for me to get a decent job somewhere which has a nice scope for improvement because after this semester placement starts and i reckon there would not be many companies wanting a person who has a failure.