To calculate the Mean and Standard Deviation of five values

MeanAndSd.cpp

#include <iostream>
#include <cmath>

using namespace std;

// Function Prototype
void FillArray(float ArrayValues[]);
void CalculateMeanandStddev(float ArrayValues[], double *Mean_ptr, double *Stddev);
void PrintResult(float ArrayValues[], double Mean, double Stddev);

// Main Function
int main()
{
	// Intialize the variables 
	float ArrayValues[5];
	double Mean, Stddev;
	char answer;

	cout << "Welcome to Mean and Standard Deviation Application" << endl ;
	cout << "To calculate the  Mean and Standard Deviation of five values " << endl;

	do{
		// Function Call
		FillArray(ArrayValues);
		CalculateMeanandStddev(ArrayValues,&Mean,&Stddev);
		PrintResult(ArrayValues, Mean, Stddev);

		// To Calculate again
		cout << endl << "Do you want to do calculate again? (Y = Yes  & N = No)" << endl;
		cin >> answer;
	}
	while(answer == 'Y');

	system("PAUSE");
	return 0;
}

void FillArray(float ArrayValues[]){
	cout << "Enter Five values" << endl;
	for(int i = 0; i < 5; i++){
	   cout << "Enter value for " << i+1 << " - "  ;
	   cin >> ArrayValues[i];
	   cin.ignore();
	}
}

void CalculateMeanandStddev(float ArrayValues[], double *Mean_ptr, double *Stddev){
	double totalValues = 0;
	double totalDifference = 0;
	for(int i =0; i <5; i++)
	{
	     totalValues += ArrayValues[i];
	}
	cout.precision(2);
	cout.setf(ios::fixed);

	*Mean_ptr= (totalValues / 5);
	for(int i =0; i <5; i++)
	{
	     totalDifference += pow(( ArrayValues[i] - *Mean_ptr ),2);
	}
	cout.precision(2);
	cout.setf(ios::fixed);

	*Stddev = (totalDifference / 5);
}

void PrintResult(float ArrayValues[], double Mean, double Stddev)
{
	cout << endl << "The values are :  "  ;
	for(int i =0; i <5; i++)
	{
		cout << ArrayValues[i] << ", ";
	}
	cout << "The Mean is:  " << Mean << endl;
	cout << "The Standard Deviation is " << Stddev << endl;
}