uva 10370 Above Average

Problem

uva 10370 英文題目
沒什麼好說的就是算平均數

#include <iostream>
#include <cmath>

using namespace std;

int main(){
    
    int testcase;
    while(cin >> testcase){
        int length;
        for(int i = 0 ; i < testcase ; i++){
            cin >> length;
            double sum = 0;
            double *scores = new double[length];
            int count = 0;
            
            for(int j = 0 ; j < length ; j++){
                cin >> scores[j];
                sum = sum + scores[j];
            }
            
            double avg = sum / length;
            
            for(int j = 0 ; j < length ; j++){
                if(scores[j] > avg){
                    count++;
                }
            }
            
            printf("%.3f%%\n",count * 100.0 / length);
            
            
            
        }
    
    }
}