#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;
 
void loop_q();
 
 
int main()
{
 
int dice;
 
system("cls"); 
 
           cout << "What would you like your dice out of: " << endl;
           cout << "(100, 10, 6, 4 ect..)" << endl;
           cin >> dice;
 
    int rand_number = rand() % dice + 1;
 
system("PAUSE");   
system("cls"); 
 
               cout << "Roll: " << rand_number << endl;
               cout << endl;
loop_q();
}    
 
void loop_q()
{
      cout << "Would you like to roll again? y/n." << endl;   
 
      char answer;
      cin >> answer;
 
if (answer=='y') 
{
main();   
}
 
else
{
return;
}
 
}

#include <ctime>
 
int main()
{
     srand( time(0) ); // see the random number generator
 
    // other code here
}