[Solved] What is the type for structure and pointers?

The possible types as,

x1 = c->buf;

x1 is pointer to a character since buf is the base pointer.

x2 = *c->buf;

x2 is a character since base pointer is dereferenced to get the first character

x3 = &c->buf[c->curp];

x3 is a pointer to a character since c->buf[c->curp] gives a character and & gives its address

x4 = *c;

x4 is a variable of struct client since c is a pointer to a variable of that struct and is dereferenced.

It is not necessary since other types can also be used to hold these values. these are possible types.