متغیر float

[spark]

#include <math.h>  
float val = 37.777779;  
float rounded_down = floorf(val * 100) / 100;   /* Result: 37.77 */ 
float nearest = roundf(val * 100) / 100;  /* Result: 37.78 */ 
float rounded_up = ceilf(val * 100) / 100;      /* Result: 37.78 */