Round 1 - HR type phone interview - Very brief

What's your GPA? Tell me about yourself? Explain your projects? How would you deal with conflict? Multitasking?

Round 2 Technical Interview

I chose signal processing and C. Every question I was asked was already mentioned by others here. But they expect you answer 98% of the questions. Here are some of the questions I remember:

Recursive functions? Pointers? Null pointer? Difference between & and *? malloc? Precautions? How would you add path in command line? How you save a variable in a mat file? How you save some specific variables in a mat file? How you open these data? How can you see the type of a variable? How can you do the inverse of a matrix? How you do the transpose of a matrix? What A.B does? What AB does? What A.' does? What A.^-1 does? What A' does? How you find help in MATLAB? How you plot a variable? What is a script? What is a function? What is a derivative? What is an integral? What is the relationship between integral and derivative? What are eigenvalues? What are eigenvectors?

C language - example for null pointer.