# Integer Part of Numbers. Fractional Part of Number

Suppose, x is the real number.

Its integral part is the greatest integral number, that isn′t exceed x.

The integral part of number x denotes as [x].

The fractional number of number x is difference between the number and its integral part, i.e. x-[x] .

The fractional part of number x denotes as {x}.

For example,

[3.47]=3; {3.47}=0.47;

[-2.3]=-3; {-2.3}=-2.3-(-3)=0.7;

[15]=15; {15}=0