HDU 1012 u Calculate e

传送门：HDU 1012

#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
    int multiply[15];
    double summul[15];
    multiply[0] = 1;
    summul[0] = 1;
    for(int i=1;i<10;i++)
    {
        multiply[i] = multiply[i-1]*i;
        summul[i] = summul[i-1]+1/(double)multiply[i];
    }
    printf("n e\n");
    printf("- -----------\n");
    printf("0 1\n");
    printf("1 2\n");
    printf("2 2.5\n");
    for(int i = 3;i<10;i++)
        printf("%d %.9lf\n",i,summul[i]);
    return 0;
}
#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
    int multiply[15];
    double summul[15];
    multiply[0] = 1;
    summul[0] = 1;
    for(int i=1;i<10;i++)
    {
        multiply[i] = multiply[i-1]*i;
        summul[i] = summul[i-1]+1/(double)multiply[i];
    }
    printf("n e\n");
    printf("- -----------\n");
    printf("0 1\n");
    printf("1 2\n");
    printf("2 2.5\n");
    for(int i = 3;i<10;i++)
        printf("%d %.9lf\n",i,summul[i]);
    return 0;
}