Ŀ

գҪıйص䡣
һ m(0<m<10)1! + 2! +  + m!Ҫ岢úfact(n) n!β n intdouble
ʾ˵

5      (m=5)

1!+2!+...+5! = 153.000000



#include <stdio.h>
double fact(int n);
int main(void)
{    
    int i, m;
    double sum; 

    scanf("%d", &m);
/*---------*/
    printf("1!+2!+...+%d! = %f\n", m, sum); 
}

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

