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Datetime constants can be represented as a literal line consisting of 6 parts for values of year, month, date,…

Color constants can be represented in three ways: literally, by integers, or by name (for named Web colors onl…

String constant is a sequence of ASCII-code characters enclosed in double quotes: “Character constant&#8…

Floating-point constants consist of an integer part, a point (.), and a fractional part. The integer and the f…

Boolean constants may have the value of true or false, numeric representation of them is 1 or 0, respectively.…

Any single character enclosed in single quotes or a hexadecimal ASCII-code of a character looking like ‘…

Decimals: numbers from 0 to 9; zero must not be the first number. 10進数： 0 ～ 9 までの数。ゼロは最初の数であってはなりません。 Examples…

Only implicit type casting is used in MQL 4 expressions. The type priority grows at casting: ただ暗黙の型キャストだけが MQL…

Any program operates with data. Data can be of different types depending on their purposes. For example, integ…