char_code/2

gets the code of a character or reversely.

char_code(+Char, -CharCode)
char_code(-Char, +CharCode)

If Char is an atom with length 1 then CharCode gets unified with the code of Char.
If Char is a variable then Char gets unified with the character belonging to CharCode.

Arguments 

Char                   character (atom with length=1)
CharCode               integer (character code of unicode charater
                                between 0'\u0000 and 0'\uffff)

Examples

char_code('a', X). Succeeds with substitution X <- 97
char_code(Y, 98). Succeeds with substitution Y <- 98
char_code('c', 99). Succeeds.

Standard

This predicate is part of the ISO-Prolog Standard.

See also

atom_chars/2, atom_codes/2, atom_concat/3, atom_length/2, atom_number/2, number_chars/2, number_codes/2, parse_atom/2/3, sub_atom/5.

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