title: Execute program from within a C program
body: <p>How should I run another program from within my <code>C</code> program? I need to be able to write data into <code>STDIN</code> of the launched program (and maybe read from it's <code>STDOUT</code>)</p>
  
  <p>I am not sure if this is a standard C function. I need the solution that should work under Linux.</p>