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)
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RFC (best current practice status)
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