第五题：编写1+1/2+1/3+...+1/n计算程序

#include"stdio.h"
void main()
{
    
    
    int i=1,n;
    float sum=0;
    printf("please input the n:\n");
    scanf("%d",&n);
    while(i<=n)
    {
    
       
        sum+=1.0/i;
        i++;
    }
    printf("the result is %.5f\n",sum);
 }