2004: 统计成绩

解题思路:尝试使用面向对象编程，可能稍微有点复杂

注意事项:

参考代码:

#include <cstdio>

class Worker
{
        public:
                Worker()
                {
                        average_ = 0.;
                        fail_ = 0;
                        num_ = 0;
                }

                void InputAndCompute()
                {
                        int temp;
                        scanf("%d",&temp);
                        num_++;
                        average_ = (average_ * (num_ - 1) + temp)/num_;
                        if(temp<60)
                                fail_++;
                }
                float average_;
                int fail_;
                int num_;
};

int main()
{
        int i;
        Worker computer;
        for(i=0;i<=9;i++)
        {
                computer.InputAndCompute();
        }
        printf("%.1f %d",computer.average_,computer.fail_);
        getchar();getchar();
        return 0;
}