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