关于折纸问题

来源：互联网发布：移动lte是什么网络制式编辑：程序博客网时间：2024/04/28 03:37

#include <stdio.h>#include <stdlib.h>double paperFold(double thickness,int time){    int i;    double res=thickness;    for(i=0;i<time;i++){        res*=2;    }    return res;}int main(){    double thickness = 7e-8;    printf("%f\n",paperFold(thickness,51));    return 0;}

double的精确度确实好很多，使用float得出的都是约数

C++

#include <iostream>using namespace std;class PageFold{   private:        long double thickness;        int times;   public:        PageFold(double thickness,int times){                thickness = thickness;                times = times;        }        long double calculate(){            long double result = thickness;            for(int i=0;i<times;i++){                  result*=2.0;//±ØÐëÓÃ*=            }            return result;        }};int main(){    long double thickness = 0.000000007;    int times = 51;    PageFold example(thickness,times);    cout <<example.calculate()<< endl;    return 0;}