随机数的使用

1.引入相关的库。

2.初始化种子值。

3.随机产生int值。

 

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

int main()
{
    srand(static_cast<unsigned>(time(NULL)));

    int number = rand() % 100 + 1;

    int nGuessCount = 0;
    int guess;

    cout<<"welcome to guess number"<<endl;

    do 
    {
        cout<<"enter your guess:";
        cin>>guess;
        if (guess>number)
        {
            cout<<"big"<<endl;
        }
        else if(guess < number)
        {
            cout<<"small"<<endl;
        }
        else
        {
            cout<<"right"<<endl;
        }
    } while (guess != number);

    return 0;
}