C - Difference between “char var[]” and “char *var”?

Question

I am expecting that both following vectors have the same representation in RAM:

char a_var[] = \"XXX\\x00\";
char *p_var  = \"XXX\";

But st

Answer 1

The first creates an array of char containing the string. The contents of the array can be modified. The second creates a character pointer which points to a string literal. String literals cannot be modified.