Hello Deepak

After 12th appear for  jee mains and advanced exam,viteee,srmeee,comedk,bitsat.....and clear these exams with good marks then you can choose software engineering as your branch. After completing your course follow the given steps -

• Earn a degree in software engineering or a related field.
• Begin programming immediately
• Study math
• Build software
• Seek an internship
• Find job opportunity
• Consider your career goals.

All the very best. 

Thanks I hope it helps you