C / C++ / MFC

using namespace std;
int main(void)

{

double M, N, total, score1, score2, score3, score4, score5, score6, score7, score8,
       V1, V2, V3, V4, V5, V6, V7, V8, s1, s2, s3, s4, s5, s6, s7, s8, Variance;

score1 = 0.0;
score2 = 0.0;
score3 = 0.0;
score4 = 0.0;
score5 = 0.0;
score6 = 0.0;
score7 = 0.0;
score8 = 0.0;

cout << "Input the number of people in sample ";
cin >> N;
cout << "input the 1st score ";
cin >> score1;
cout << "input the 2nd score ";
cin >> score2;
cout << "input the 3rd score ";
cin >> score3;
cout << "input the 4th score ";
cin >> score4;
cout << "input the 5th score ";
cin >> score5;
cout << "input the 6th score ";
cin >> score6;
cout << "input the 7th score ";
cin >> score7;
cout << "input the 8th score ";
cin >> score8;
total = score1 + score2 + score3 + score4 + score5 + score6 + score7 + score8;
M = total / N;
cout << "the mean for these scores is: " << M << "\n";
s1 = score1 - M;
V1 = s1 * s1;
s2 = score2 - M;
V2 = s2 * s2;
s3 = score3 - M;
V3 = s3 * s3;
s4 = score4 - M;
V4 = s4 * s4;
s5 = score5 - M;
V5 = s5 * s5;
s6 = score6 - M;
V6 = s6 * s6;
s7 = score7 - M;
V7 = s7 * s7;
s8 = score8 - M;
V8 = s8 * s8;
Variance = (V1 + V2 + V3 + V4 + V5 + V6 + V7 + V8) / N;
cout << "the variance for these scores is: " << Variance << "\n";
return 0;

}

int main(void)
{
  int N = 0;
  double score[8];
  for (int i = 0; i < 8; i++) score[i] = 0.0;
  cout << "Enter number of people in sample [1-8] ";
  cin >> N;
  if ((N > 0) && (N <= 8)) {
    double total = 0;
    for (int i = 0; i < N; i++) {
      cout << "Enter score " << (i + 1) << " ";
      cin >> score[i];
      total = total + score[i];
    }
    double mean = total / (double)N;
    double variance = 0.0;
    for (int i = 0; i < N; i++) {
      variance = variance + ((score[i] - mean) * (score[i] - mean));
    }
    variance = variance / (double)N;
    cout << "Variance is " << variance;
  }
  else {
    cout << "Incorrect number of samples.";
  }
}

if (N >= 3) {
  cout << "Enter score 3 ";
  cin >> score3;
}
if (N >= 4) {
  cout << "Enter score 4 ";
  cin >> score4;
}

#include <iostream>
#include <vector>

using namespace std;

int main(void)
{
	vector<double> scores;
	double score;
	double mean;
	double total = 0;
	double variance = 0;
	int numberOfPeople;

	cout << "Input the number of people in sample: ";
	cin >> numberOfPeople;

	for(int n = 0; n < numberOfPeople; n++)
	{
		cout << "Input the score for person " << n+1 << ": ";
		cin >> score;
		scores.push_back(score);
		total += score;
	}

	mean = total / numberOfPeople;
	cout << "The mean for these scores is: " << mean << "\n";

	for(int n = 0; n < numberOfPeople; n++)
	{
		double temp = scores[n] - mean;
		variance += temp * temp;
	}

	variance /= numberOfPeople;
	cout << "The variance for these scores is: " << variance << "\n";
	return 0;
}

e_prabhu wrote:

Is there any condition in which this API return INVALID_HANDLE_VALUE

WhiteSky wrote:

See mci functions

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

<br />
	MCI_DGV_OPEN_PARMS mciOpen;<br />
<br />
        mciOpen.dwCallback = 0L;<br />
        mciOpen.wDeviceID = 0;<br />
	mciOpen.lpstrDeviceType ="MPEGVIDEO";		mciOpen.lpstrElementName = ReturnString;<br />
        mciOpen.lpstrAlias ="MPEGVIDEO";		mciOpen.dwStyle = WS_CHILD;<br />
	mciOpen.hWndParent = hWnd;<br />
    mciSendCommand(0, MCI_OPEN,<br />
        MCI_OPEN_ELEMENT |MCI_OPEN_TYPE,<br />
        (DWORD)(LPVOID) &mciOpen);<br />
...<br />
...<br />

WhiteSky wrote:

I wrote one program that use mci and i could open mp3anyway i test now and i can play mp3

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow