C语言—求平均数、中位数、众数

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define N 40
void sort(int a[], int n)
{
	int i, j, k;
	for (i = 0; i < n - 1; i++)
	{
		k = i;
		for (j = i + 1; j < n; j++)
		{
			if (a[j] < a[k]) k = j;
		}
		if (k != i)
		{
			int temp = a[i];
			a[i] = a[k];
			a[k] = temp;
		}
	}
}
void init(int feedback[])
{
	int i;
	srand(time(NULL));
	for (i = 0; i < N; i++)
	{
		feedback[i] = rand() % 10 + 1;
	}
}
void print(int a[], int n)
{
	int i;
	for (i = 0; i < n; i++)
	{
		printf("%4d", a[i]);
		if ((i + 1) % 10 == 0) printf("\n");
	}
}
float Average(int feedback[],int n)//求平均数
{
	sort(feedback, n);
	puts("");
	print(feedback, n);
	float sum = 0;
	int i;
	for (i = 0; i < n; i++)
	{
		sum += feedback[i];
	}
	return sum / n;
}
float Median(int feedback[],int n)//求中位数
{
	float mean;
	if (n % 2 == 0)
	{
		mean = (feedback[n / 2] + feedback[n / 2 - 1]) / 2.0;
	}
	else mean = feedback[n / 2];
	return mean;
}
int Mod(int feedback[], int n)//求众数
{
	int count[11] = { 0 };
	int i;
	for (i = 0; i < n; i++)
	{
		count[feedback[i]]++;
	}
	int max = count[1];
	int pmax = 1;
	for (i = 2; i <= 10; i++)
	{
		if (count[i] > max)
		{
			pmax = i;
			max = count[i];
		}
	}
	return pmax;
}
int main()
{
	int feedback[N];
	init(feedback);
	int n = N;
	print(feedback, n);
	float aver = Average(feedback,n);
	float median = Median(feedback,n);
	int mod = Mod(feedback, n);
	printf("aver=%f\nmedian=%f\nmod=%d", aver, median, mod);
	return 0;
}