clock() function

[mickey]

thanks for fast reply;
unser win32 there's Sleep() function that works with milliseconds. I code this:

if (posy == 600 ) Sleep(10000) //10 secs;

if (posy == 600 ) Sleep(10000) //10 secs;

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But don't resolve my problem:
I'm inside a while that catch mouse event also : Sleep block all;
Furthermore: clock() isn't stopped; so next time print() doesn't print at '0' point but '0' + something.... nut problem? thanks.....
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additional prob:
int posy = ((int) (clock()/20)) %600; posy is an int: so the when print at '0' and print at '1' I can see a very little jump.....a float value should be more linear...... but I read '%' works between int????