PROGRAMMING:Absolute value of real number
Input a real number from the keyboard, find the absolute value of the number, and output according to the format requirements.
###Input format:
Enter a real number
###Output format:
Output the absolute value of the real number, the result retains 2 decimal places, and each output has a single line (after outputting the real number, you need to enter to wrap the line)
###Input example:
```in
-3.5
```
###Output example:
```out
three point five zero
```
answer：If there is no answer, please comment
###Input format:
Enter a real number
###Output format:
Output the absolute value of the real number, the result retains 2 decimal places, and each output has a single line (after outputting the real number, you need to enter to wrap the line)
###Input example:
```in
-3.5
```
###Output example:
```out
three point five zero
```
answer：If there is no answer, please comment