#include <iostream>
#include <string>
using namespace std;

int main()
{
	//Challenge #1: Print 1 2 3 4 5 6 7 8 9 10
	int i=1; //call the variable whatever you want.

	while ( i <= 10 )
	{
		cout << i << " ";
		i = i + 1;
	}


	cout << endl;
	cout << endl;

	//Challenge #2: Do it backwards, yell blastoff! at end.
	// 10 9 8 7 6 5 4 3 2 1 BLASTOFF!!!

	int j = 10;

	while ( j > 0 )
	{
		cout << j << " ";
		j = j - 1;
	}

	cout << "BLASTOFF!!!!" << endl;

	cout << endl;
	cout << endl;


	//Challenge #3: Say the alphabet: a b c d e f ....
	char c;
	c = 'a';

	while (c <= 'z')
	{
		cout << c << ", ";
		c = c + 1;
	}
	cout << "Next time won't you sing with me! " << endl;

	cout << endl;
	cout << endl;


	//Challenge #4: Count by 2's up to 20: 2 4 6 8 10 12 14 16 18 20
	int k = 2;

	while (k <= 20)
	{
		cout << k << ", ";
		k = k + 2;
	}

	cout << endl;
	cout << endl;
	
	
	//Challenge #5: Ask for two numbers, first one smaller than 2nd:
	//example: 12, 17.  Print: 12 13 14 15 16 17
	int start, end, counter;
	
	cout << "Please enter start of range: " << endl;
	cin >> start;

	cout << "Please enter end of range: " << endl;
	cin >> end;

	counter = start;

	while (counter <= end)
	{
		cout << counter << ", ";
		counter = counter + 1;
	}

	cout << endl;
	cout << endl;
	//Challenge #6: compute 1+2+3+...+100
	int sum = 0;
	int inc = 1;

	while (inc <= 100)
	{
		sum = sum + inc;
		inc = inc + 1;
	}

	cout << "The sum from 1 to 100 is: " << sum << endl;


	cout << endl;
	cout << endl;
	//Challenge #7: Ask user how many fornite skins they have purchased.
	//Then, ask them for the price of each skin, one by one.
	//After getting all the prices, tell them the total cost in Vbucks.

	return 0;
}