Expressions I
	Expressions Arithmetiques: – Negation: ~, – operateurs multiplicatifs: *, /, div, mod, – operateurs additifs: +, - – operateurs relationnels: =, <>, >=, <=, >, <. Expressions Booleennes – andalso, orelse, not – andalso et orelse utilisent l’evaluation paresseuse. Expressions de chaines de caracteres – concatenation: ^ – exemple: “abc” ^ “def” = “abcdef”