Help with homework problem

Hi, for my homework assignment we have to fill in the question marks for piecewise polynomial interpolation. I am unsure what the first two would be. Can anyone help?

[Walter Roberson]

Fill in the question marks? Do you mean write comments about what the code section is doing?

[Marina Pirzada]

Yes that is what i meant, sorry

[Walter Roberson]

The first one looks like a bunch of assignment statements to me. What reason could there be to have assignment statements in a program?