The table below lists the data types for various field values along with the corresponding C and C++ data types. The field values shown under Data type in this table are shown in the Format column in the field table for each record.

Table 7-5 List of data types

Data type		Size (bytes)	Explanation
Field	C and C++
char(n)	char()	Number inside ( )	Character string having a length of n bytes
double	double	8	Numerical value (1.7E 308 (15 digits))
float	float	4	Numerical value (3.4E 38 (7 digits))
long	long	4	Numerical value (-2,147,483,648 to 2,147,483,647)
short	short	2	Numerical value (-32,768 to 32,767)
string(n)	char[]	Number inside ( )	Character string having n-byte length. The last character is null.
time_t	unsigned long	4	Numerical value (0 to 4,294,967,295)
timeval	struct	8	Numerical value (the first 4 bytes indicate seconds, and the next 4 bytes indicate microseconds.)
ulong	unsigned long	4	Numerical value (0 to 4,294,967,295)
utime	struct	8	Numerical value (the first 4 bytes indicate seconds, and the next 4 bytes indicate microseconds.)
word	unsigned short	2	Numerical value (0 to 65,535)
(Not applicable)	unsigned char	1	Numerical value (0 to 255)