rand.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 21 行

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

int main()
{
    double max;

    srand(time(0));

    cout << "Enter maximum random number you want: ";

    cin >> max;

    double random = (static_cast<double> (rand())) / RAND_MAX * max;

    cout << "Here's a random number between 0 and " << max << ": " << random << endl;

    return 0;
}