Question

编写程序计算e的值，e=1+1/1!+1/2!+1/3!+1/4!·······

Answer 1

#include <stdio.h>
int main()
{
int n; /* 需求值e的阶乘
long e;/*值e
int i;/*计数器
printf("Please enter the n");/*请输入需求值e的阶乘
scandf("%d",%n);/*请输入需求值e的阶乘
e = 0;/*初始化e
for(i = 0; i<=n;i++)
{
e = e + 1/fac(n);/* 计算值e = 1/0!+1/1!+1/2!+......+1/n!
}
Printf("e = %d",e);/*将结果e输出至屏幕
}
long fac(n)/*计算n的阶乘
{
return n?n*fac(n-1):1/*如n为0或1则返回值为1，若不为0,1则返回n*(n-1)!
}