c++学习

#include <iostream>#include <cmath>void evaluation(){    int i=0, j, sum=0, max=0, min=0;        std::cout << "请输入20个数";    std::cin >> i;    max = i;    min = i;    sum += i;    for (j=0;j<20;j++)    {        std::cin >> i;        sum += i;        if (i>max)        {            max = i;        }        if (i<min)        {            min = i;        }    }    std::cout <<"最小值:"<< min<<"最大值:"<<max << "平均值:"<< (double)sum/20<<std::endl;    }

印度国王的奖励

void king(){    unsigned long long i=0;    unsigned long long sum = 0;    for (int j = 0; j < 64; j++)    {        sum =sum +(unsigned long long)2 >> j;    }    std::cout << sum-1 << std::endl;}