Charnumber - a decimal number representing one or more Unicode code pointsNote Some Unicode characters can be represented by a single code point or multiple code points. For example, the character ä can be represented by the letter a plus ¨ (dieresis) or by the single character ä. The single code point version of this kind of character is called a precomposed character or a composite character.Char(0) returns an empty string (“”).Char(97) returns a.Char(98) returns b.Char(9800097) returns ab.Char(228) returns ä.Char(77600097) returns ä. In this case the number represents two Unicode characters: the letter a and the dieresis character. When these two characters appear together in a string they are displayed as a single character.