pku 1517 u Calculate e

练习输出

 

code:

#include <iostream>
#include <cstdio>
#include <cstdlib>
using namespace std;

int factorial(int a)
{
    if(a!=0 && a!=1) return a*factorial(a-1);
    else return 1;
}

int main()
{
    printf("n e\n- -----------\n");
    double sum(0);
    for(int i=0; i<10; i++)
    {
        printf("%d %.10g\n", i,sum+=1.0/factorial(i));
    }
    return 0;
}

转载于:https://www.cnblogs.com/FreeAquar/articles/1923135.html