We need to find the function value of floor function
Floor function comes under integer functions. we have floor and ceiling function.
Ceiling function gives the least integer value greater than or equal to x.
Floor function gives the greatest integer values less than or equal to x.
For example Celing(3.8) = 4
floor (3.8)= 3
Like that floor f(-0.75) = -1
greatest integer value less than -0.75 is -1
