List of data types
The table below lists the data types for field values and the corresponding C and C++ data types. The values shown in the Format column of the record field tables are those shown below in the Field column under Data type.
Table 9-5 List of data types
Data type | Size (bytes) | Description | |
---|---|---|---|
Field | C and C++ | ||
char(n) | char( ) | Number inside ( ) | Character data (0x20 to 0x7e) Character string having a length of n bytes |
double | double | 8 | Numeric value (1.7E![]() |
float | float | 4 | Numeric value (3.4E![]() |
long | long | 4 | Numeric value (-2,147,483,648 to 2,147,483,647) |
short | short | 2 | Numeric value (-32,768 to 32,767) |
string(n) | char[ ] | Value in parentheses | Character string with a length of n bytes. The last character is null. |
time_t | unsigned long | 4 | Numeric value (0 to 4,294,967,295) |
timeval | Structure | 8 | Numeric value (first 4 bytes are seconds, next 4 bytes are microseconds) |
ulong | unsigned long | 4 | Numeric value (0 to 4,294,967,295) |
utime | Structure | 8 | Numeric value (first 4 bytes are seconds, next 4 bytes are microseconds) |
word | unsigned short | 2 | Numeric value (0 to 65,535) |
(Not applicable) | unsigned char | 1 | Numeric value (0 to 255) |