Input 5 digit number and output it space separated

5digits.cpp

#include <iostream>
// #define WINDOWS_OS //enable this line if you are using windows
#define INP cout << "Input : ";
using namespace std;

int x10(int x) {
// this func calculate 10 to ther power x
	int n,m ;
	m = 1;
	if (x>0){
		for (n = 1; n <= x; n++) {
			m *= 10;
		};
	}
	return m;
}

int main()
{
	int num,n1,n2,n3,n4,n5;
	cout << "Type a five digit number" << endl
	<< "Ex : 12345" << endl << endl;
	INP
	cin >> num;
	
	while ((num < 9999) || (num > 99999))
	{
		#ifdef WINDOWS_OS
			//windows cls
			system("cls");
		#else
			// linux clear
			system("clear");	
		#endif
		cout << "Invalid Number" << endl;
		INP
		cin >> num;
	}
	
	n1 =  num / x10(4);
	n2 = (num  % x10(4)) / x10(3);
	n3 = (num  % x10(3)) / x10(2);
	n4 = (num  % x10(2)) / x10(1);
	n5 = (num  % x10(1)) / x10(0);
	cout << endl << n1 << " " << n2 << " " << n3 << " " << n4 << " " << n5;
	return 0;
}