system.html

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    system
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    Syntax:
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  #include &lt;stdlib.h&gt;
  int system( const char *command );
</pre>

  <p>The system() function runs the given <em>command</em> by passing
  it to the default command interpreter.</p>  

  <p>The return value is usually zero if the command executed without
  errors. If <em>command</em> is <strong>NULL</strong>, system() will
  test to see if there is a command interpreter available. Non-zero
  will be returned if there is a command interpreter available, zero
  if not.</p>

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    <a href="exit.html">exit</a><br>
    <a href="getenv.html">getenv</a>
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