2. Write a C function to take two integers n,p as the parameters and return the value of "P, given that n>=r, n>0, and r>-0.

Write a C function that takes an integer as input and returns the sum of all its digits.

Write a C++ function to find the value of the function: Y = cos(x) + 2*x*log(x), given that x>0. Inside the main function read input value of x and test the function.

2. Implement function date that takes 4 inputs: a non-abbreviated weekday (as a string) a non-abbreviated month (as a string) a day in the month (a an integer) a year (as an integer)     Function date() should return the complete date (as a string) using 3-characterabbreviations for the weekday and month and using the format shown below>>> date('Tuesday', 'October', 20, 2014)'Tue, Oct 20, 2014'>>> date('Thursday', 'May', 1, 2014)'Thu, May 1, 2014'