Test whether a specific column/row name is a value in r

I am trying to test whether a column is named something specific (and then I would like to do the same with row name). Hence is it possible to loop through each column name to see if it's equal something?

Example:

dataframe:
      Jan     Feb     Mar
Jan    0       0       0
Feb    0       0       0
Mar    0       0       0

Logic: Loop through each column to find if it's called "Jan" and loop through each row to see if it's called "Feb". If the logic is met then put 1 in equivalent col/row. E.g.

Final dataframe:
       Jan     Feb     Mar
Jan    0       0       0
Feb    1       0       0
Mar    0       0       0

Thanks!