const makes the value of a pointer or a variable unmodifiable.Syntax:
const data_type variable = value;Example:
const int ci = 123;
/* declare a pointer to a const.. */
const int *cpi;
/* ordinary pointer to a non-const */
cpi = &ci;
ncpi = &i;
* this is allowed
cpi = ncpi;
* this needs a cast
* because it is usually a big mistake,
* see what it permits below.
ncpi = (int *)cpi;
* now to get undefined behaviour...
* modify a const through a pointer
*ncpi = 0;
Java Enterprise Edition (EE)
Java Standard Edition (SE)
RFC (standard status)
RFC (proposed standard status)
RFC (draft standard status)
RFC (informational status)
RFC (experimental status)
RFC (best current practice status)
RFC (historic status)
RFC (unknown status)
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