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