تابع ‎floor()‎‎ در ‎C++‎

/* floor example */
#include <stdio.h>/* printf */
#include <math.h>/* floor */

int main ()
{
printf ( "floor of 2.3 is %.1lfn", floor (2.3) );
printf ( "floor of 3.8 is %.1lfn", floor (3.8) );
printf ( "floor of -2.3 is %.1lfn", floor (-2.3) );
printf ( "floor of -3.8 is %.1lfn", floor (-3.8) );
return 0;
}