MQL4 Reference Language Basics Data Types Integer Types

Integer Types

In MQL4 integers are represented by eleven types. Some types can be used together with other ones, if required by the program logic, but in this case it's necessary to remember the rules of typecasting.

The table below lists the characteristics of each type. Besides, the last column features a type in C++ corresponding to each type.

Type	Size in Bytes	Minimum Value	Maximum Value	C++ Analog
char	1	-128	127	char
uchar	1	0	255	unsigned char, BYTE
bool	1	0(false)	1(true)	bool
short	2	-32 768	32 767	short, wchar_t
ushort	2	0	65 535	unsigned short, WORD
int	4	- 2 147 483 648	2 147 483 647	int
uint	4	0	4 294 967 295	unsigned int, DWORD
color	4	-1	16 777 215	int, COLORREF
long	8	-9 223 372 036 854 775 808	9 223 372 036 854 775 807	__int64
ulong	8	0	18 446 744 073 709 551 615	unsigned __int64
datetime	8	0 (1970.01.01 0:00:00)	32 535 244 799 (3000.12.31 23:59:59)	__time64_t

Integer type values can also be presented as numeric constants, color literals, date-time literals, character constants and enumerations.