# include <stdio.h>
# include <math.h>

int main ()
{
    int i, j, n, m;
    int sum = 0;

    printf("请输入任意值，求1到任意值之间的奇数之和:\n");
    scanf("%d",&j);

    for(i=1; i<=j; i=i+2)   
    {
        sum = sum + i;      
    }
    printf("奇数之和sum=%d\n",sum);

    n = sqrt(sum);              //n个奇数之和sum=n*n
    printf("奇数个数n=%d\n",n);

    m = sum/n;
    printf("奇数之和平均值m=%d\n",m);

    return 0;
}