예제4 5명의 평균 구하기

PersonAge.cpp

#include<iostream>
using namespace std;
class PersonAge
{
private:
        int age[5];
        static int cnt, tot;
        static float avg;

public:
        PersonAge();
        void calcAvg(){ avg = (float)tot/cnt; };
        void print(){ cout << "총 " << cnt << "명의 평균 나이 : " << avg << endl; };
};

int PersonAge::cnt=0;
int PersonAge::tot=0;
float PersonAge::avg=0.0;
PersonAge::PersonAge()
{
        for(int i=0; i<5; i++)
        {
                cout << "나이 : ";
                cin >> age[i];
               
                tot=tot+age[i];
                cnt++;
        }
}

void main()
{
        PersonAge p;

        p.calcAvg();
        p.print();
}