Print numbers from 1 to n using recursion in c++

C++ program for Print numbers from 1 to n using recursion. Here mentioned other language solution.

// Include header file
#include <iostream>
using namespace std;
// C++ program for
// Print numbers from 1 to n using recursion
class Numbers
{
	public: void printNumber(int num)
	{
		if (num >= 1)
		{
			// Reduce the number and try again 
			// Until n is greater than zero
			this->printNumber(num - 1);
			// Display calculated result
			cout << " " << num;
		}
	}
};
int main()
{
	Numbers *task = new Numbers();
	// Test A (1..10)
	int num = 10;
	cout << "\n (1 to " << num << ") : ";
	task->printNumber(num);
	// Test B (1..20)
	num = 20;
	cout << "\n (1 to " << num << ") : ";
	task->printNumber(num);
	return 0;
}

Output

 (1 to 10) :  1 2 3 4 5 6 7 8 9 10
 (1 to 20) :  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Please share your knowledge to improve code and content standard. Also submit your doubts, and test case. We improve by your feedback. We will try to resolve your query as soon as possible.

New Comment







© 2021, kalkicode.com, All rights reserved