Pointer/array: char

static read-only literal:

char x[]="abc";
shorthand for
char x[4] = {0x61,0x62,0x63,0};


static/auto:

char x[30] = "hello";

or

char x[30];
strcpy(x, "hello");

or 

char x[] = "hello"



dynamic:

char *x;
x = malloc(30);
strcpy(x, "hello");

Making string literals const is a C++ idiom and not part of any C standard
declaration; intialization; assignment