midterm

midterm

first question

#include<iostream>
#include<cstdlib>
using namespace std;
class Dice {
    public:
        Dice(int n);
        friend int cast(Dice &p1);
    private:
        int sides;
};
Dice::Dice(int n)
{
    sides=n;
}
int cast(Dice &p1)
{
    return rand()%p1.sides;
}
    
int main()
{
    int i,n=0,temp,num;
    cin>>i;//输入面数
    cin>>num;//输入学号
    Dice a(i);
    for(int j=0;j<500;j++)
    {
        temp=cast(a);
        if(temp==num)
        n++;
    }
    cout<<n<<"/500";
    
    
    return 0;
}

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Question 2