Ŀ

գҪıйص䡣
һ repeat (0<repeat<10) repeat 㣺
뾫epsʽ PI ֱֵһСeps
PI/211/(1*3)2!/(1*3*5)3!/(1*3*5*7)...n!/(1*3*5*...*(2n+1))
Ҫ岢ú fact(n) n!βnintdouble岢ú multi(n) 1*3*5*...*nβnintdouble
ʾ˵
룺
2           (repeat=2)
1E-6        (eps=1E-6)
1E-5        (eps=1E-5)
ʾ
PI = 3.14159
PI = 3.14158



#include <stdio.h>
double fact(int n);
double multi(int n);	
int main(void)
{	
    int i; 
    int repeat, ri;
    double eps, sum, item;

    scanf("%d", &repeat);
    for(ri = 1; ri <= repeat; ri++){
        scanf("%le", &eps);
/*---------*/
        printf("PI = %0.5f\n", 2 * sum);
    }

}

/*---------*/

/*---------*/
