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How can i sum digit number, but when this number is negative to turn it to positive

like:
-10 = 1;
-12=3

```num = int(input("Enter a number: "))
sum =0

while num > 0:
sum += num %10
num = num // 10
print("Sum of the digits: ",sum)```

What I have tried:

i dont know, maybe with if ...
Posted
Updated 7-Jul-22 8:09am

## Solution 2

Quote:
i dont know, maybe with if ...
Indeed...

Python
```num = int(input("Enter a number: "))
sum =0

if num < 0:
num = - num

while num > 0:
sum += num %10
num = num // 10
print("Sum of the digits: ",sum)```

Patrice T 7-Jul-22 13:10pm
+5
CPallini 7-Jul-22 16:33pm
Thank you.

## Solution 1

This converts a negative number to a positive: abs() in Python - GeeksforGeeks[^] Use that, and then your existing code should work.

## Solution 3

Quote:
i dont know, maybe with if ...

May be time to learn debugger.
Your code do not behave the way you expect, or you don't understand why !

There is an almost universal solution: Run your code on debugger step by step, inspect variables.
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't know what your code is supposed to do, it don't find bugs, it just help you to by showing you what is going on. When the code don't do what is expected, you are close to a bug.
To see what your code is doing: Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute.

Debugger - Wikipedia, the free encyclopedia[^]

Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
Basic Debugging with Visual Studio 2010 - YouTube[^]

27.3. pdb — The Python Debugger — Python 3.6.1 documentation[^]
Debugging in Python | Python Conquers The Universe[^]
pdb – Interactive Debugger - Python Module of the Week[^]

The debugger is here to only show you what your code is doing and your task is to compare with what it should do.