Print Even Numbers using Recursion

Here we will learn to make a C++ program to print even numbers using recursion upto n numbers.

Even numbers meaning?

Even numbers are those numbers which can be completely divided by 2, and have not any remainder.

For example:

0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 etc.

#include <iostream>

using namespace std;

int a=0;

int main()

{

int n,c;

int even(int);

cout<<"Enter number of terms :\n";

cin>>n;

cout<<"\nSeries is :\n";

c=even(2*n);

cout<<"\t"<<c;

}

int even(int n)

{

if(n==2)

return 2;

else

{

cout<<"\t"<<n;

return (even(n-2));

}

Output

Enter number of terms :
10

Series is :
20 18 16 14 12 10 8 6 4 2