题解 | #求平均年龄#
求平均年龄
https://www.nowcoder.com/practice/ca319fdb02714994850cc631d76f5547
#include <iostream>
using namespace std;
int main(){
int n;
while(cin >> n){
double x,sum = 0;
for(int i = 0;i < n;i ++){
cin >> x;
sum += x;
}
printf("%.2f\n",sum / n);
}
return 0;
}
