Question

Use a Recursive function in C++ to print numbers that are either even or divisible by 5 or both,
existing in the range of 1 to 100, in Descending order, i.e. 100,98, 96, 95, 94, …, 2.

Answer 1

Required Answer:-

Question:

• Use a recursive function in C++ to print numbers that are either even or divisible by 5 or both in the range 1 to 100 in descending order.

Solution:

Here comes the program.

#include <iostream>

using namespace std;

void recursion(int);

int main() {

    cout << "Numbers are...\n";

    recursion(100);

    return 0;

}

void recursion(int n){

   if (n >= 1) {

         if(n%2==0 || n%5==0)

             cout << n << " ";

         recursion(n-1);

   }

}

Logic:

• Recursive function is a function which calls itself during execution. We can see that recursion function is called by itself till the value of n is greater than 1. If n>=1 is true, then recursion method will be called again and again and if n becomes less than 1, then recursion stops.

Refer to the attachment for output ☑.