Laguna of Cakel

#include <iostream>
#include <vector>
#include <cmath>

using namespace std;

int main(void)
{
 vector<double> stlVector;
 vector<double>::iterator pVec;
 double dIn, dTotal, dAvg, dVar;
 dIn = dTotal = dAvg = dVar = 0.0;

 cout << "실수 값 입력(입력종료:0) : ";
 cin >> dIn;

 while( dIn != 0 )
 {
  stlVector.push_back(dIn);
  cin >> dIn;
 }

 for(pVec = stlVector.begin(); pVec != stlVector.end(); pVec++)
  dTotal += *pVec;

 dAvg = dTotal / (int)stlVector.size();
 dTotal = 0;

 for(pVec = stlVector.begin(); pVec != stlVector.end(); pVec++)
  dTotal += (*pVec - dAvg) * (*pVec - dAvg); // pow((*pVec - dAvg), 2) 를 써도 됩니다.

 dVar = sqrt(dTotal / (double)stlVector.size());

 cout << "평    균 : " << dAvg << endl;
 cout << "표준편차 : " << dVar << endl;

 return 0;
}

#include <iostream>
#include <cmath>

using namespace std;

int main(void)
{
 int i, j;
 float fScr[5] = {0};
 float fTotal, fDeviation, fSwap;
 fTotal = fDeviation = fSwap = 0.0;
 i = j = 0;
 
 cout << "다섯개의 실수값을 입력 하여라 : ";
 cin >> fScr[0] >> fScr[1] >> fScr[2] >> fScr[3] >> fScr[4];

 for(i = 0; i < 5; i++)
 {
  for(j = i; j < 5; j++)
  {
   if(fScr[i] < fScr[j])
   {
    fSwap = fScr[j];
    fScr[j] = fScr[i];
    fScr[i] = fSwap;

   }

  }

  fTotal += fScr[i];

 }

 for(i = 0; i < 5; i++)
   fDeviation += pow((fScr[i] - fTotal / 5), 2);
 
 fDeviation = sqrt(fDeviation / 5);

 cout << "크기 순으로 정렬한 결과 : " << fScr[0] << ' ' << fScr[1] << ' ' << fScr[2] << ' ' << fScr[3] << ' ' << fScr[4] << endl;
 cout << "입력된 값의 평균 : " << fTotal / 5 << endl;
 cout << "입력된 값의 표준편차 : " << fDeviation << endl;

 return 0;
}