operator const char *

Applies To
OField,

Description
This method returns the object's value as a string.

Usage
operator const char *() const

Remarks
This methods hands the value of the object back to the caller as a null-terminated string. If the object's current value is not a string, the method attempts to convert the value to a string. This can fail, resulting in the return of a NULL pointer.

The actual memory to which the returned pointer points is managed by the object. It should not be freed by the caller; it will be freed when the object is destroyed or closed or when another const char * cast is made.

Return Value
A valid, null-terminated const char pointer on success; NULL on failure.

Example
This example deletes all managers. We determine which employees are managers by casting the job field to a string.

// open the database

ODatabase odb("ExampleDB", "scott", "tiger");

// open a dynaset on the employee table

ODynaset empdyn(odb, "select * from emp");

// get an OField object for looking at the job field

OField job = empdyn.GetField("job");

// look through all the employees

while (!empdyn.IsEOF())

{

if (0 == strcmp((const char *) job, "MANAGER"))