习题2-4

#include<stdio.h>
int main(void)
{
    int m,n,i;
    double y;    
    y=0;
    printf("Entern,m:");
    scanf("%d%d",&m,&n);
    for(i=m;i<=n;i++)
       y=y+(i*i+1.0/i);
        
    printf("y=%Lf\n",y);
    
}