title: How to make multiple `fork()`-ed processes comunicate using shared memory?
body: <p>I have a parent with 5 child processes. I'm wanting to send a random variable to each child process. Each child will square the variable and send it back to the parent and the parent will sum them all together.</p>
  
  <p>Is this even possible? I can't figure it out...</p>
  
  <p>edit: this process would use shared memory.</p>