题解 | #求平均年龄#
求平均年龄
https://www.nowcoder.com/practice/ca319fdb02714994850cc631d76f5547
#include <stdio.h>
using namespace std;
int main () {
int n;
int arr[101];
double sum = 0;
double ave = 0;
while (scanf ("%d", &n) != EOF){
for (int i = 0; i < n; i++){
scanf ("%d", &arr[i]);
sum += arr[i];
ave = sum / n;
}
printf ("%.2f", ave);
}
return 0;
}
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