[POJ]1004 Financial Management

水题，求12个数的平均值，最后控制一下小数位数即可。

//By:一只大幽灵
//Time:2012/4/11

#include <iostream>
using namespace std;

int main() {
float a[12];
float s = 0, b;
for (int i = 0; i < 12; i++) {
cin >> a[i];
s += a[i];
}
b = s / 12;
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);
cout << "$" << b << endl;
return 0;
}