There are three type of string pointer.
const char * - This is a mutable pointer which points to a constant string.
const char * str = "Hello World"; str++;//OK str = ' ';//Not compilable
char * const - This is a const pointer pointing to a writable string.
char * const str = "Hello World"; str++;//Not Compilable str = ' ';//OK
const char * const - This is a const pointer pointing to a read-only string.
const char * const str = "Hello World"; str++;//Not Compilable str = ' ';//Not Compilable
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