说明

P315 14

你的main函数的内容为：

int main()
{
    int x = 1;
    float avg;
int n;

cin>>n;

while (x < 20){
   avg = RunningAvg(x);
 cout<<"Average is: "<<avg<<endl;
 x= x +3;
}

   return 0;
}

输入格式

输出格式

20

Average is: 1
Average is: 2.5
Average is: 4
Average is: 5.5
Average is: 7
Average is: 8.5
Average is: 10

来源