How do I randomize these numbers?

So my homework assignment is to create a looping function to print only even numbers from 0 – 200. I need to create 100 random and even numbers(only 10 numbers can print per line). I'm having trouble randomizing the numbers. This is what I have so far:

// Loop from 0 to 200 
for (i = 2, j = 1; i <= 200; i++, j++)
{
    // Print even numbers(divisible by 2)
    if (i % 2 == 0)
    {
        cout << i;
    }

    // Create new line after printing 10 numbers
    if (j == 20)
    {
        j = 0;
        ofs << '\n';
    }
}