CEIL and FLOOR
Functions in C++
Hello
people, today we are going to read about the two mathematical pre-defined
functions of <cmath> library of C++ language. These functions are very
helpful in the problems of competitive programming. If you are familiar with
basic mathematics then you won’t face any difficulty while understanding these
functions.
Ceil and Floor,
these are two architectural words which we use very often. Ceiling is like the
inner face of top horizontal face and Flooring means the lower most horizontal
face of any cuboidal structure.
For using
these two functions we need to include the <cmath> library in C++ and
<math.h> in C language.
CEIL
Funciton :
int c = ceil(double a);
This
function returns the smallest integer which is greater than or equal to ‘a’.
Look at some
below given explanations to get a more clear picture about the working of this
function.
If :
a is equal to 5.9 than c will be 6
a is equal to 5.1 than c will be 6
a is equal to 6 than also c will be 6
FLOOR Function
:
int c = floor(double a);
This function
returns the largest integer which is smaller than or equal to ‘a’
Look at some
below given explanations to get a more clear picture about the working of this
function.
If :
a is equal to 5.9 than c will be 5
a is equal to 5.1 than c will be 5
a is equal to 5 than also c will be 5
