Is there any coding round after written

Yes! There is a programming round after written exam.
Programming Round: Given a problem, write the code, execute it, get the solution.
Technical Interview: Normally some more programming concepts, about final year project etc.
HR Interview: Tell me about yourself, salary expectation, relocation plans etc.
Some simplest programs that one can prepare are,
WAP to print next to the last word of a sentence, WAP to remove the vowels from the input string, WAP to convert uppercase to lower case and vice versa of a given string or sentence, WAP to print the desired character from string, WAP to reverse a string etc.