Financial Management（1004）

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

void main()
{
    int i;
    int month=12;
    double mean=0;

    double num;
    vector<double> vect;
    vector<double>::iterator vit;
    for (i=0;i<month;i++)
    {
        cin>>num;
        vect.push_back(num);
    }

    for (vit=vect.begin();vit!=vect.end();vit++)
    {
        mean+=*vit;
    }
    mean/=month;
    cout<<'$'<<mean<<endl;

}