C/math.h/round

round: returns the value of arg rounded to the nearest integer

<source lang="cpp">

//Declaratoin: float roundf(float arg); double round(double arg); long double roundl(long double arg);

// Values precisely between two values, such as 3.5, are rounded up.

 #include <math.h>
 #include <stdio.h>
 int main(void)
 {
   printf("%f\n", round (3.2));
   return 0;
 }
        
       /*3.000000*/ 
          
      </source>