C++ Program to Print All Natural Numbers Using Recursion

C++ program to print all the natural numbers from 1 to N using recursion has been shown here.

Page content(s):

1. Program & Output

Additional content(s):

1. Algorithm

2. Pseudocode

3. Time Complexity

4. Flowchart

1. C++ Program & output to Print First N Natural Numbers using recursion

Code has been copied

/**********************************************
                alphabetacoder.com
 C++ program to print all natual numbers from 1 
 to n  using recursion
***********************************************/

#include <iostream>

using namespace std;

// recursive function
void printUptoN(int n) {
    //condition for calling
    if (n > 1)
        printUptoN(n - 1);
    cout << n << " ";
}

int main() {
    // declare variable
    int n;
    //take input of the number upto which 
    // natural numbers will be printed
    cout << "Enter the upper limit= ";
    cin >> n;

    cout << "First " << n << " natural numbers are : ";
    // call the recursive function to print
    // the natural numbers
    printUptoN(n);

    return 0;
}

Output

Case 1:

Enter the upper limit=4

First 4 natural numbers are : 1 2 3 4

Case 2:

Enter the upper limit=8

First 8 natural numbers are : 1 2 3 4 5 6 7 8