题解 | #统计成绩#c语言动态内存管理版

#include <stdio.h>
#inlcude<stdlib.h>

int main()
{
	int n = 0;
	scanf("%d", &n);
	double* arr = (double*)realloc(NULL, n * sizeof(double));//动态内存管理，手动调整arr的内存大小
	for (int i = 0; i < n; i++)
	{
		scanf("%lf", &arr[i]);//挨个赋值
	}
	double aver, max, min;
	max = arr[0];
	min = arr[0];
	double sum = 0;
	for (int i = 0; i < n; i++)
	{
		if (arr[i] > max)
		{
			max = arr[i];
		}
		if (arr[i] < min)
		{
			min = arr[i];
		}
		sum += arr[i];
	}
	aver = (double)(sum / n);
	printf("%.2lf %.2lf %.2lf", max, min, aver);
	return 0;
}