Please give the correct C programming codes:

( Note : for qus 2 Name : Samol ,ID : 1721867 Cgpa 3.10

1. The sequence of Pell numbers starts with O and 1 i.e. P 1 = 0 and P2 = 1, and then each Pell number is the sum of twice the previous Pell number and the Pell number before that. The first few terms of the sequence are 0, 1, 2, 5, 12, 29, 70, 169, 408, 985 ... Print upton th Pell number recursively where n > 2 and n is taken as user input. Test case:- User Input: 5 Pell numbers are: 0,1,2,5,12 2. Write a program to take input of n students (id, name, cgpa). Use structure to store the data. Value of n should be taken from user input (n must be >=5). Use typedef to define the structure name as Student Write a function writeFile(Student *ptr) that will save those students into a text file called "Studentinfo.txt" that will be opened for writing in that same function