/* ---------------------------------------------------------------------  
// Figure 7.20:  How to round.
// Figure 7.21:  Rounding and casting.
// --------------------------------------------------------------------- 
*/
#include "tools.h"     

void main( void )
{
    double x, y = 17.7,  z = -17.7;
    int k, m, n;

    m = round(y);                   /* Round y to nearest integer. */   
    n = round(z);                   /* Round z to nearest integer. */ 
    printf( "Rounding: y= %6.2f  m= %3i \n", y, m );
    printf( "Rounding: z= %6.2f  n= %3i \n", z, n );

    k = (int) y;     /* Casting float to int truncates. */
    x = (double) k;  /* Casting back does not restore the fractional part. */
    printf( "Casting:  y= %6.2f  k= %3i  x= %6.2f \n", y, k, x );
}