题解 | #牛牛学数列2#
牛牛学数列2
https://www.nowcoder.com/practice/fc72951f52984f3abd286d82eeffacba
#include <stdio.h>
int main()
{
int i=0;
scanf("%d",&i);
double x=0.0;
double sum=0.0;
int j=0;
for(j=1;j<=i;j++)
{
x=1.0/j;
sum+=x;
}
printf("%.6lf",sum);
return 0;
}
