习题4

#include<stdio.h>
int main(void)
{
    int denominator,n,i;
    double sum,m;

    printf("Enter n:");
    scanf("%d",&n);
     
    sum=0;
    denominator=1;
    for(i=m;i<=n;i++){
        sum=sum+i*i+1.0/denominator;
        denominator=denominator+1;
    }
    printf("sum=%.2f
",sum);

    return 0;
}