Current location - Plastic Surgery and Aesthetics Network - Plastic surgery and beauty - Why can character data and plastic data be manipulated? Add and subtract a character from a number. . It always feels weird,
Why can character data and plastic data be manipulated? Add and subtract a character from a number. . It always feels weird,
It is certainly not the [* *] operation of' a'+'b'== 13 1.

For example, the three letters after A are' a'+3=='d'

Or when a letter is capitalized, it means' a'-32=='A',' b'-32=='B', ...

C designers feel convenient.