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// Program Average rewritten using a class #include <iostream> using namespace std; class StatisticsPackage{ private: float aa[20]; /* aa scope start*/ int length; /* length scope start*/ public: float average(){ float result = 0.0; /* result scope start*/ for(int i = 0; i < length; ++i) /* i scope start*/ result += aa[i]; return result/length; } /* result and i scope end*/ void get_data(){ length = 0; while(cin >> aa[length++]); --length; } }; /* aa and length scope end*/ int main(){ StatisticsPackage sp; /* aa and length lifetimes start */ sp.get_data(); float av = sp.average(); /* av scope start*/ cout << av << endl; return 0; } /* av scope end*/ 
