c_notes/pointers/const

c_notes_const_pointer.c

char my_char = 'X';
char another_char = 'Y';

char * const char_fixed_ref = &my_char;
// char_fixed_ref should always point to my_char

char_fixed_ref = &another_char;
// this would raise a compiler error

const char *char_pointer_fixed_value = &my_char;
// my_char cannot change through the pointer char_pointer_fixed_value

*char_pointer_fixed_value = 'Z';
// this would raise compiler error

my_char = 'Z';
// you must reference the variable directly to change it

const char * const *char_pointer_fixed
// both the reference and value of this pointer is fixed