“what s[i]-'0' does” Code Answer’s

what s[i]-'0' does

cpp by Viper         on Aug 23 2020 Comment

1

It seems that s is a character array or a pointer to the first element of a character array. And element s[i] contains a character that represents a digit as for example '5' . To convert this character that for example in ASCII has internal code equal to 53 (while internal code of character '0' is 48) there is used expression s[i] -'0' that is equivalent to 53 - 48 and equal to number 5

what s[i]-'0' does

whatever by Viper         on Aug 23 2020 Comment

1

'0' - 48 '1' - 49 '2' - 50 '3' - 51 '4' - 52 '5' - 53 '6' - 54 '7' - 55 '8' - 56 '9' - 57

Source: stackoverflow.com

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