Question

C++ trouble
char c='8'

Answer 1

calculate:
c-'0'

Answer 2

@ganeshie8 @quickstudent @emmigrace222 @ParthKohli @Abhisar @hartnn @cwrw238

Answer 3

Please don't ask me, I don't know anything about computer science.

Answer 4

that will actually subtract 0 from 8, giving you 8

like if you do '8'-'2'
output will be 6

Answer 5

to expand a bit on @hartnn's answer:
char c = '8' is actually 1 byte that, assuming ASCII character encoding, will have the value of 38 hex (or 00111000 in binary, you can consult http://www.asciitable.com/ for details). '0' has hexadecimal value of 30 (or binary 00110000). Now if you do 38h - 30h you will get 8h. Going back to our ASCII table that is the character that represents that backspace. Hope this helps :)