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What is the difference between constant pointer and pointer
to a constant. Give examples.
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Answer Posted / vignesh1988i
Constant pointer :
it is a pointer which points to the same memory location or
to same address and and whatever value the variable which is
pointed by the pointer holds.
for eg :
char a;
char const *p;
p=&a;
here var. a is a memory location having a address and that
variable contains some character data . but this pointer
p points to the same address ( a ) however the value in
var. a changes. finally, THE POINTER POINTED TO AN ADDRESS
IS A CONSTANT ,WHATEVER THE VALUE INSIDE THE VARIABLE MAY BE..
POINTER TO A CONSTANT :
this is a pointer which points to a constant variable
assigned to that pointer. and another pointer can also be
assigned to a same const. variable to point to.
for eg :
char Const a;
char *p,*q;
p=&a;
q=&a;
thank u
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