Null strings

It is convenient to represent a null string by a zero pointer, instead of a pointer to a null-terminated string with no significant characters, because
s = NULL;
is easier to write than
s = malloc(1); *s = `\0';

It is convenient to represent a null string by a zero pointer, instead of a pointer to a null-terminated string with no significant characters, because s = NULL; is easier to write than s = malloc(1); *s = `\0';