int c = getchar()?

Question

ok so im reading this book: The C Programming Language - By Kernighan and Ritchie (second Edition) and one of the examples im having trouble understanding how things are wor

Answer 1

Answer for your Question is answered. But just add 1 more thing.

As you are declaring variable c as int. It is pretty clear that you are taking values from 0 to 9 having ascii value of 48-57. So you can just add 1 more line to the code-

c = c-48.