C calculator algorithm,,, help,,,me,,,,please,,,,

[MM9999MM]

Body

https://github.com/MM9999MM/Calgorithm/blob/e0272d7f6ed6319148e0e6d1034e0c5e279f2fb6/calculator
This is a link for my repository.

This is a calculator algorighm.
Even though I set result variable value 0, it keeps saying 'The variable 'result' is being used without being initialized'
Do somebody know what's the problem..?

Guidelines

• I have read and understood this category's guidelines before making this post.

[MM9999MM]

Dahm! I solved this problem myself!

1. char values check -> use ' ' instead of " "
2. blocked dividing number with 0
3. included variable resettings when changing STAGE