get random numbers c++ code example

Example 1: c++ generate random numbers

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

int main()
{
	srand(time(0));

	for (int i = 0; i <= 10; i++)
	{
		cout << rand() % 10 << " ";
	}
}

Example 2: random in c++

v1 = rand() % 100;         // v1 in the range 0 to 99
v2 = rand() % 100 + 1;     // v2 in the range 1 to 100
v3 = rand() % 30 + 1985;   // v3 in the range 1985-2014

Example 3: random numbers c++

/*The problem with srand(time(NULL)) and rand() is that if you use them
in a loop it'll probably be executed during the same clock period
and therefore rand() will return the same number. To solve this
you can use the library random to help you.*/

#include <random>

std::random_device rd;
std::mt19937 e{rd()};
std::uniform_int_distribution<int> dist{1, 5}; //Limits of the interval
//Returns a random number between {1, 5} with
dist(e);