/* Demonstrates some of C's math functions */

#include <stdio.h>
#include <math.h>

main()
{

     double x;

     printf("Enter a number: ");
     scanf( "%lf", &x);

     printf("\n\nOriginal value: %lf", x);

     printf("\nCeil: %lf", ceil(x));
     printf("\nFloor: %lf", floor(x));
     if( x >= 0 )
         printf("\nSquare root: %lf", sqrt(x) );
     else
        printf("\nNegative number" );

     printf("\nCosine: %lf", cos(x));
     return(0);
}