Beginner C++ programmer: Not sure how i would calculate this, know I need a loop but unsure of what kind and how to implement. I think for-loop but not sure about the mathematical operation to get the desired result. Any help at all will be upvoted and greatly appreciated!

On day 1, there was only 1 person with the flu.

On day 2, it jumped to 5.

On day 3, there were 17

Every day since, the number of people who have the flu is equal to the last 3 days combined. You will make a program that will ask the user for what day they want a count of people with the flu for. Then display the amount.

Heres what I have so far:

#include int main() int numDays1: int numSick; std: :cout