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

//Topic: arrays


//Print items in given array
//from start index to (and including) end index
void printNumbers(double myArrayVariable[], int start, int end)
{
	for (int i=start; i<=end; i++)
	{
		cout << "Value at index " << i << " is: " << myArrayVariable[i] << endl;
	}
}

//Randomly fill given array with numbers from 1 to 100
void randomFill(double theArray[], int s, int e)
{
	for (int i = s; i <= e; i++)
	{
		theArray[i] = rand() % 100 + 1;
	}
}

//Sum up numbers in array from given range, return result
double sum(double ourArray[], int s, int e)
{
	double total = 0;

	for (int i = s; i <= e; i++)
	{
		total = total + ourArray[i];
	}

	return total;
}

//Print words of array in sentence form
void printSentence(string A[], int s, int e)
{
	for (int i = s; i <= e; i++)
	{
		cout << A[i] << " ";
	}
	cout << "." << endl;
}



//Compute average of numbers in given array
//from indices s to e.
double average(double A[], int s, int e)
{
	double total = sum(A, s, e);
	int totalNumbers = e - s + 1;
	return total/totalNumbers;
}

int main()
{
	double numbers[10]; //declares 10 double variables.

	//Can set the values of the array varibles
	numbers[0] = 3.14;
	numbers[1] = 68.2;
	numbers[5] = 18.7;
	numbers[7] = 54.3;
	numbers[9] = 21;

	//Can look at the variabls
	cout << numbers[7] << endl; // 54.3
	cout << endl;

	for (int i = 0; i < 10; i++)
	{
		cout << numbers[i] << endl;
	}


	//Challenge #1: Can pass arrays to functions
	printNumbers(numbers, 0, 9);  //print all the numbers
	cout << endl;
	printNumbers(numbers, 1, 7); //68.2, -,-,-,18.5,-,54.3
	cout << endl;

	//Challenge #2: Fill array with numbers from 1-100 (randomly)
	randomFill(numbers, 0, 9);
	printNumbers(numbers, 0, 9);

	//Challenge #3: Compute sum of numbers in array
	cout << sum(numbers, 0, 9) << endl;

	//Challenge #4: Compute average of numbers in array
	cout << average(numbers, 0, 9) << endl;


	//Let's make an array of strings
	string sentence[8];

	sentence[0] = "Tiger";
	sentence[1] = "King";
	sentence[2] = "netflix";
	sentence[3] = "watches";
	sentence[4] = "but";
	sentence[5] = "sleeps";
	sentence[6] = "with";
	sentence[7] = "pudding";

	//Challenge #5:
	printSentence(sentence, 0, 7); //Tiger King netflix watches but sleeps with pudding.


	//Challenge QUIZ (submit to blackboard by midnight): make a function that replaces
	//all occurrences of first word with second word.
	//e.g. replace netflix with hulu.
	wordReplace(sentence, 0, 7, "netflix", "hulu");
	printSentence(sentence, 0, 7); //Tiger King hulu watches but sleeps with pudding.


	return 0;
}