C/math.h/ceil

    
//Declaration: float ceilf(float num); 
               double ceil(double num); 
               long double ceill(long double num);  
//Return:      Given 1.02, ceil() would return 2.0.
               Given -1.02, ceil() would return -1.
    
  

  #include <math.h>
  #include <stdio.h>
  int main(void)
  {
    printf("%f", ceil(9.9));
   
  }
         
/*
10.000000*/