how to grab random numbers in cpp 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 number c++

#include <iostream> 
#include <ctime> 
#include <cstdlib>

using namespace std;

int main() 
{ 
    srand((unsigned)time(0)); 
    int random_integer; 
    int lowest=1, highest=10; 
    int range=(highest-lowest)+1; 
    for(int index=0; index<20; index++){ 
        random_integer = lowest+int(range*rand()/(RAND_MAX + 1.0)); 
        cout << random_integer << endl; 
    } 
}