MQL4 Integer Types
Data Types and Sizes
**char**: 1 byte (8 bits), signed. Range: -128 to 127.
**uchar**: 1 byte (8 bits), unsigned. Range: 0 to 255.
**short**: 2 bytes (16 bits), signed. Range: -32,768 to 32,767.
**ushort**: 2 bytes (16 bits), unsigned. Range: 0 to 65,535.
**int**: 4 bytes (32 bits), signed. Range: -2,147,483,648 to 2,147,483,647.
**uint**: 4 bytes (32 bits), unsigned. Range: 0 to 4,294,967,295.
**long**: 8 bytes (64 bits), signed. Range: -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.
**ulong**: 8 bytes (64 bits), unsigned. Range: 0 to 18,446,744,073,709,551,615.Unsigned Type Behavior
Unsigned integer types (uchar, ushort, uint, ulong) are intended for positive values only.
Assigning negative values to unsigned types can lead to unexpected results and infinite loops due to value wrapping.Hexadecimal Notation
Hexadecimal numbers are represented using digits 0-9 and letters a-f (or A-F for values 10-15).
They must start with 0x or 0X prefix.
Examples: 0x0A, 0x12, 0X12, 0x2f, 0xA3, 0Xa3, 0X7C7.Related Topics
[Typecasting](/basis/types/casting)
[Character Constants](/basis/types/integer/symbolconstants)
[Datetime Type](/basis/types/integer/datetime)
[Color Type](/basis/types/integer/color)
[Bool Type](/basis/types/integer/boolconst)
[Enumerations](/basis/types/integer/enumeration)