4． 编写一个程序，读入9个裁判所打的分数，去掉一个最高分，去掉一个最低分，求剩余7个分数的平均值（要求用数组实现）。

#include <stdio.h>

void main()
{
	float score[10], sumScore, minScore, maxScore;
	int i, j;
	for (i = 0; i < 9; i ++)
	{
		printf("please input %d score\n", i + 1);
		scanf("%f", &score[i]);
	}
	sumScore = minScore = maxScore = score[0];
	for (j = 1; j < 9; j ++)
	{
		if (score[j] > maxScore)
		{
			maxScore = score[j];
		}
		else if (score[j] < minScore)
		{
			minScore = score[j];
		}
		sumScore += score[j];
	}
	sumScore -= maxScore;
	sumScore -= minScore;

	printf("the average is %f\n", sumScore/7);
}