floor???

[atjm88]

#include <iostream>
#include <iomanip>
#include <conio>

int main()
{
   double x=781.2856789;
   cout<<setiosflags(ios::showpoint|ios::fixed);
   cout<<setprecision(5);
   cout<<x<<endl;
   cout<<(floor(x*100+0.5)/100)<<endl;
   cout<<(int(x*100+0.5)/100)<<endl;

   getch();
   return 0;
}

Can anyone tell me what is floor? And which library to use? TQ...

[Athar]

http://www.cplusplus.com/reference/clibrary/cmath/floor/ (in short: it rounds down).

And which library to use?

Library for what?

[ndpndp]

use math.h

and floor Returns the largest integral value that is not greater than x

[atjm88]

Thanks...

May I know what is this for cout<<setiosflags(ios::showpoint|ios::fixed);?