Host variables in data structures

IBM® Informix® ESQL/C supports the use of host variables in the following data structures:

Arrays of host variables
IBM Informix ESQL/C supports the declaration of arrays of host variables. You must provide an integer value as the size of the array when you declare the array. An array of host variables can be either one or two dimensional.
C structures as host variables
IBM Informix ESQL/C supports the declaration of a C structure (struct) as a host variable. You can use the components of the structure within Informix ESQL/C statements.
C typedef statements as host variables
IBM Informix ESQL/C supports the C typedef statements and allows the use of typedef names in declaring the types of host variables.
Pointers as host variables
Use a pointer as a host variable if your program uses the pointer to input data to an SQL statement.
Function parameters as host variables
You can use host variables as parameters to functions. You must precede the name of the host variable with the parameter keyword to declare it as a function parameter.

Parent topic: Declaring and using host variables