C Tutorial/math.h/floor

floor

Item Value Header file math.h Declaration float floorf(float num);double floor(double num);long double floorl(long double num); Return returns the largest integer (represented as a floating-point value) not greater than num.

1. Given 1.02, floor() would return 1.0.
2. Given -1.02, floor() would return -2.0.

#include <math.h>
  #include <stdio.h>
  int main(void)
  {
    printf("%f", floor(10.9));
 
  }