[BOJ/C++] 4344 평균은 넘겠지

과연 그럴까요?

cout.precision(3); //부동소수점
cout << fixed; // 소수점 고정

강제형변환 괜찮은가?

#include <iostream>
#include <vector>

using namespace std;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int C;
	cin >> C;
	for (int i = 0; i < C; i++) {
		int N;
		cin >> N;
		vector<int> v;
		int input;
		int sum = 0;
		for (int j = 0; j < N; j++) {
			cin >> input;
			v.push_back(input);
			sum += input;
		}

		double avg = (double)sum / (double)N;
		int up = 0;
		for (int j = 0; j < N; j++) {
			if (v[j] > avg)
				up++;
		}

		cout.precision(3);
		cout << fixed;
		cout << (double)up / (double)N * 100 << "%\n";
	}

	return 0;
}