编写c语言程序，输入n并计算下列多项式的值：s=1/1*2+1/2*3+……+1/n*(n+1)

#include <stdio.h>

int main() {
    int n, i;
    double s = 1.0;
    scanf("%d", &n);
    for (i = 2; i <= n; i++) {
        s += 1.0 / (i * (i - 1));
    }
    printf("The value of the polynomial is %.6lf\n", s);
    return 0;
}