algorithm_datastructure/recur_to_iterator.cpp at master · hezudaopp/algorithm_datastructure · GitHub

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#include <iostream>
#include <stack>
using namespace std;
void recur(int &s) {
		recur(s);
	cout << s;
void iterate(int &s) {
	stack<int> st;
	while (x!=0) {
		st.push(x);
		cin >> x;
	st.push(0);
	while (!st.empty()) {
		s += st.top();
		cout << s;
		st.pop();
int main (char *argv[], int argc) {
	iterate(s);