floor()
The floor()
function returns the first whole number that is less than or equal to the argument.
Syntax
The cmath
library must be added at the top of the file.
std::floor(n);
Argument must be a double
/float
/long double
, and the return value will be the same type.
Example
double result;result = std::floor(n);
Codebyte Example
Use floor()
to round down the double 12.3456
: