有点意思

#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    int n;
    cin >> n;
    
    int count[4] = {0}; // 初始化四个年龄段的计数器
    
    for (int i = 0; i < n; i++) {
        int age;
        cin >> age;
        
        if (age >= 0 && age <= 18) {
            count[0]++;
        } else if (age <= 35) {
            count[1]++;
        } else if (age <= 60) {
            count[2]++;
        } else {
            count[3]++;
        }
    }
    
    // 输出四个年龄段的百分比
    for (int i = 0; i < 4; i++) {
        double percentage = (double)count[i] / n * 100;
        cout << fixed << setprecision(2) << percentage << "%" << endl;
    }
    
    return 0;
}