// If you are not sure what some lines of code do, try looking back at
// previous example programs, notes, or ask a question.
 
#include <iostream>
 
using namespace std;
 
int addFrom(int);
 
int main() {
 
	char selection;
 
	// A simple do/while loop, where the loop will continue asking the user
	// to continue until they enter something that is not 'y'
	do {
		cout << "Continue? (y/n): ";
		cin >> selection;
	} while(selection == 'y');
 
	cout << endl << endl;
 
	// A nested for loop, will run the inner loop 10 times. Each time the outer
	// loop is run, i is incremented, and hence the first output number goes up
	// every ten outputs. Within each run of the outer loop, the inner loop sets
	// j to 0, and counts it up to 10, which produces each pair of output numbers.
	for(int i = 0; i < 10; i++) {
		for(int j = 0; j < 10; j++) {
			cout << i << "-" << j << " ";
		}
		cout << endl;
	}
 
	cout << endl << endl;
 
	// This calls the recursive function
	cout << "Recursion example: " << addFrom(5) << endl << endl;
 
	system("pause");
 
	return 0;
}
 
// This is a recursive function. See the notes for how it works.
int addFrom(int x) {
 
	if(x == 1)
		return 1;
	else
		return x + addFrom(x - 1);
 
}
 

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