#include <stdio.h>
FILE *infile, *outfile;


void input_scores_file(FILE*infile,float score[], int n)
{

	infile = fopen("scores.txt", "r");
	if (infile == NULL)
	{
		printf("에러: 입력 파일을 열 수 없음!!!\n\n");
		return;
	}
	/else fscanf(infile, "%f", &score[n]);

	fclose(infile);

}


float max = 0.0;
float min = 100.0;
float sum = 0.0;
float mean = 0.0;

float max_score(float score[], int n)
{

	if (n == 0)
		return max;

	if (score[n - 1] >= max)
	{
		max = score[n - 1];
		n--;
		return max_score(score, n);
	}
	else
		n--;
	return max_score(score, n);

}








float min_score(float score[], int n)
{

	if (n == 0)
		return min;

	if (score[n - 1] <= min)
	{
		min = score[n - 1];
		n--;
		return min_score(score, n);
	}
	else
		n--;
	return min_score(score, n);
}



float sum_scores(float score[], int n)
{
	if (n == 0)
		return sum;

	if (n >= 0)
		sum += score[n - 1];
	n--;
	return  sum_scores(score, n);

}



void print_result_file(FILE*outfile,float max, float min, float sum, float mean)
{
	outfile = (FILE *)fopen("result.txt", "w");
	if (outfile == NULL)
	{
		printf("에러: 출력 파일을 열 수 없음!!!\n\n");
		return;
	}

	fprintf(outfile,"최고점수: %f\n", max);
	fprintf(outfile,"최저점수: %f\n", min);
	fprintf(outfile,"합계점수: %f\n", sum);
	fprintf(outfile,"평균점수: %f\n", mean);

	fclose(outfile);

}


void main()
{
	int n;
	float score[30];
	float max, min, sum, mean;


	input_scores_file(infile, score, n);


	max = max_score(score, n);
	min = min_score(score, n);
	sum = sum_scores(score, n);
	mean = sum / (float)n;

	print_result_file(outfile,max, min, sum, mean);

}