[백준] 4344번 : 평균은 넘겠지 - C

https://www.acmicpc.net/problem/4344

#include<stdio.h>

int main() {
    int n;
    scanf("%d",&n);
    for(int i=0;i<n;i++){
        int m;
        scanf("%d",&m);
        int sum=0;
        int count=0;
        int arr[m];
        for(int i=0;i<m;i++){
            scanf("%d",&arr[i]);
            sum+=arr[i];
        }
        double ave=(double)sum/m;
        for(int j=0;j<m;j++){
            if(arr[j]>ave) count++;
        }
        printf("%.3f%c\n",(double)count*100/m,'%');
    }
}