Need help in my C language

1. Use recursion instead

2. NO LOOPS allowed

3.no function is allowed to change the value of any variable, once that variable has been given a value.

 What number shall I start with? 16 sequence: 16 8 4 2 1 length: 5 largest: 16 For start values from 1 to 16: longest: 9 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1 length: 20 containing largest: 15 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1 largest: 160

Need help translating the last two functions to recursion

//Finds the longest sequence between (1 - n) int longeststart(int n) int longest = -1; int longstr = n; for (int x = 1; x