Introduction
I have used CodeBlocks compiler for debugging purpose. But you can use any C++ programming language compiler as per your availability.
Write C++ program to find sum of natural numbers in given range using recursion
#include <iostream>
using namespace std;
// Function declaration
int sumofnnumbers(int start, int end);
int main()
{
int start, end, sum;
// Inputting lower and upper limit from user
cout<<"Enter lower limit: ";
cin>>start;
cout<<"Enter upper limit: ";
cin>>end;
sum = sumofnnumbers(start, end);
cout<<"Sum of natural numbers from "<<start <<" to "<<end << ": " <<sum;
return 0;
}
//Recursively find the sum of natural number
int sumofnnumbers(int start, int end)
{
if(start == end)
return start;
else
return start + sumofnnumbers(start + 1, end);
}Result
