Question

Just like in Java , (Math . random * ) statement is there a way to input array numbers in C++ ?

For example I want to input numbers from 6 to 89 with RANDOM numbers in C++. Assign them into arrays.

I know how to sort the numbers but I would just like to know the method to do random numbers to make my life easier.

I am rusty in programming and I am open to any criticism but I would appreciate a straightforward response.

Answer 1

Use srand to seed the random number generator, then use rand to get a random number.

For example, the following program populates an array with rando values in your requested range:

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

int main (void) {
    int xyzzy[10];

    // Seed the generator.

    std::srand (time (0));

    // Populate the array.

    for (int i = 0; i < sizeof(xyzzy) / sizeof(*xyzzy); i++)
        xyzzy[i] = 6 + (std::rand() % 84);

    // Print the array.

    for (int i = 0; i < sizeof(xyzzy) / sizeof(*xyzzy); i++)
        std::cout << xyzzy[i] << "\n";

    return 0;
}

This outputs (in my case):

59
51
84
83
58
85
83
25
50
22

Keep in mind that the properties of those random numbers may not be perfect due to the way they’re generated but, unless you’re a statistician or cryptographer, they should be fine.