programming in c 2d array

Question

Starting from the 2D student attendance table and the month table,

1. Write the C function which displays, for a student whose index is passed as a parameter, the months he is present.
2. Write the C function that displays, for a month whose name (the character string) is passed as a parameter, the students who are present this month (a student can be displayed several times if it is present several times in the month).
3. Write the function that displays the students present at least once each month