提交时间:2020-10-06 20:11:28

运行 ID: 6569

#include<bits/stdc++.h> using namespace std; int n,a[101]; double sum1,sum2,sum3,sum4,ans1,ans2,ans3,ans4; int main(){ cin>>n; for(int i=1;i<=n;i++) cin>>a[i]; for(int i=1;i<=n;i++){ if(a[i]>=0 && a[i]<=18) sum1++; if(a[i]>=19 && a[i]<=35) sum2++; if(a[i]>=36 && a[i]<=60) sum3++; if(a[i]>=61) sum4++; } ans1=sum1/n*100; printf("%.2lf",ans1); cout<<"%"<<endl; ans2=sum2/n*100; printf("%.2lf",ans2); cout<<"%"<<endl; ans3=sum3/n*100; printf("%.2lf",ans3); cout<<"%"<<endl; ans4=sum4/n*100; printf("%.2lf",ans4); cout<<"%"<<endl; return 0; }