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You use the dot operator when the left side is the name of the object or a reference to an object, and you use the arrow operator when the left side is a pointer to an object. Example: struct foobar x, *p= &x; x.field = p->field; (&x)->field = (*p).field;
\sqrt(9.8)~ 3.13
Password dotmate
Well.... there is pythagoras.
lines m and n are parallel if x= 12 and y= 54