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<h2>
<a name="1209834"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">time_now</font>
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<p>
<a name="1209835"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Return the current time</font>
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<a name="1209836"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
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<a name="1209837"> </a><font size=2 face=Courier><strong>#include <ostime.h><br></strong></font>
<a name="1209838"> </a><font size=2 face=Courier><strong>clock_t time_now( void );<br></strong></font>
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<a name="1209839"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
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<a name="1209840"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<h3>
<a name="1209843"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
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<p>
<a name="1217693"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Returns the number of ticks since the system started.</font>
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<a name="1209844"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
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<a name="1209845"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<a name="1209846"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
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<p>
<a name="1209847"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><font size=2 face=Courier><strong>time_now()</strong></font> returns the number of ticks since the system started running. The exact time at which counting starts is implementation specific, but is no later than the call to <font size=2 face=Courier><strong>kernel_start</strong></font>.</font>
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<p>
<a name="1209848"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The units of ticks is an implementation dependent quantity; see <a href="clock.htm#1204414"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Chapter⌨️ 快捷键说明
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