Random Number Generator with a Seed

Question

I am generating random numbers by using srand(time(NULL)). Any idea why it always gives just even random numbers? In my case its giving so. Please help i need odd numbers too. I need the set of 0s, 1s. for eg : {1,1,0,0,1,0,0,0,1,1,0}

Answer 1

Think of initializing the PRNG like initializing a variable ... You don't do

// pseudo-code
// print numbers from 1 to 10
do 10 times
    number_to_print = 1
    print number_to_print
    number_to_print++
end loop

Likewise, srand() should only be called once per program run.

call srand() // initialize PRNG
loop
    rand()
end loop