Use of randomize() in c++ [on hold]

I want to know how does the randomize() function work in case of C++. What does it exactly do and how do I use it in a code? For example all I want to do is generate 5 random numbers which should be different every time the code runs (note that this should be done using random() and randomize() I don't want a solution which involves machine time and uses srand() and rand()) Also please include any directives and other things that might be necessary for the use of random() and randomize() functions.