Random Number engine and distribution

17.28 write a function. Each call generates and returns a uniformly distributed random unsigned Int.

                                                                                                                                                                #include<iostream>#include<vector>#include<random>#include<ctime>using namespace std;int main(){    uniform_int_distribution<unsigned> u;    default_random_engine e();    for(size_t i=0;i<10;++i)        cout<<u(e)<<" ";    cout<<endl;    for(size_t i=0;i<10;++i)        cout<<u(e)<<" ";    cout<<endl;}

17.29 users are allowed to provide a seed as an optional parameter.

 17_29.cpp                                                                                                                                                                       #include<iostream>#include<vector>#include<random>#include<ctime>using namespace std;int main(){    uniform_int_distribution<unsigned> u;    default_random_engine e(time(0));    for(size_t i=0;i<10;++i)        cout<<u(e)<<" ";    cout<<endl;    for(size_t i=0;i<10;++i)        cout<<u(e)<<" ";    cout<<endl;}

17.30 add two parameters this time, indicating that the function allows the minimum and maximum values returned

#include<iostream>#include<vector>#include<random>#include<ctime>using namespace std;int main(){    uniform_int_distribution<unsigned> u(0,9);    default_random_engine e(time(0));    for(size_t i=0;i<10;++i)        cout<<u(e)<<" ";    cout<<endl;    for(size_t i=0;i<10;++i)        cout<<u(e)<<" ";    cout<<endl;}

 

Random Number engine and distribution