title: Execution time between functions with & without arguments C/C++
body: <p>I'd just like to ask what's the difference in execution time when:</p>
  
  <p>a) We have variables declared in <code>main()</code> and send them in functions using arguments</p>
  
  <p>b) We have global variables and access them directly from functions with no arguments</p>
  
  <p>The thing is I started writing few aps and just saw a few discussions about this, but I haven't yet written any application that makes the difference bigger then few ms.</p>