# Python program to find greatest integer using floor() method

An example of floor() method in Python: Here, we are going to learn how to find the greatest integer using floor() method in Python?
Submitted by Anuj Singh, on August 06, 2019

The greatest integer function is a function (real numbers function) to itself that is defined as follows: it sends any real number to the largest integer that is less than or equal to it.

The greatest integer function of is denoted by .

The greatest integer function is related to the fractional part (sometimes denoted ) of the number as follows: for any , we have: More about greatest integer function: floor() and ceiling functions | wikipedia

## Python code to find greatest integer (Use of floor() method)

```# Python code to find greatest integer
# (Use of floor() method)

import math #importing class

num = float(input("Enter any float number: "))
print("math.floor(num): ", math.floor(num))

num = float(input("Enter another float number: "))
print("math.floor(num): ", math.floor(num))
```

Output

```Enter any float number: 56.892
math.floor(num):  56
Enter another float number: -34.567
math.floor(num):  -35
```

Preparation