Question

I need to write a program that the user sets a range of numbers (e.g. 30 -50) It needs to select a random number inside this range.

Answer 1

How about double random?

def doublyRandom():
rand = random()
multiplier = ( max - min ) * rand()
multiplier = multiplier + min * rand
return( multiplier * rand() )

Answer 2

I am a beginner, @rsmith6559, the assignment wants me to use random() and write an algorithm that will work for any range.

Answer 3

@OnePieceFTW You'll probably want a look at the Random class's nextInt() method
http://www.tutorialspoint.com/java/util/random_nextint_inc_exc.htm

Answer 4

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

using namespace std;

int random_number(int min, int max)
{
return ((rand%(max-min)) + min);
}

int main()
{
int min, max;
srand( time( NULL ) );
cout<<"Enter min value: ";
cin>> min;
cout<<"Enter max value: ";
cin>> max;
cout<<"Random number from "<<min<<"to"<<max<<" is <<random_number(min,
max);

return 0;
}

Answer 5

where "%" is a modulo operator

Answer 6

correction: return ((rand()%(max-min)) + min);

Answer 7

rand() is some arbitrary number, modulo range (max - min) gives you namber from this range. + min, gives you number from min to (max - min) + min so at the end you got number from min to max