What happening here how this possible?

Question

6+9=63

https://code.sololearn.com/cOzoAJRePACi/?ref=app

Answer 1

What happens is that, when you store a char in an integer variable, it saves the char's ASCII code, which for '9' is 57.

57 + 6 = 63

Answer 2

when you determine format with %d for characters it show its ascii code and if you use %c instead. it show character

Answer 3

How do i type caste back in to int

Answer 4

you can use atoi()

Answer 5

convert string into number:
https://www.sololearn.com/learn/C/2937/