时间限制: 2s
内存限制: 192MB 提交: 21679 解决: 9770
题目描述
编写程序，输入一个正整数n，求下列算式的值。要求定义和调用函数fact(k)计算k的阶乘，函数返回值的类型是double。
1+1/2+ .... +1/n!
输出保留五位小数
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