std::experimental:: randint

From cppreference.com
Defined in header <experimental/random>
template < class IntType >
IntType randint ( IntType a, IntType b ) ;
(library fundamentals TS v2)

Generates a random integer in the closed interval [a, b] .

Parameters

a, b - integer values specifying the range

Return value

A random integer i in the closed interval [a, b] , produced using a thread-local instance of std:: uniform_int_distribution < IntType > invoked with the per-thread random number engine .

Remarks

If IntType is not one of short , int , long , long long , unsigned short , unsigned int , unsigned long , or unsigned long long , the program is ill-formed.

The behavior is undefined if a > b .

Example

#include <experimental/random>
#include <iostream>
 
int main()
{
    int random_number = std::experimental::randint(100, 999);
    std::cout << "random 3-digit number: " << random_number << '\n';
}

Possible output:

random 3-digit number: 273

See also

reseeds the per-thread random engine
(function)