. Actual parameters contain the values that are passed to a function and receive results. Formal parameters are those which store passed values of actual parameters..
for example
void main()
{ int y=9, z=8;
sum(y,z)
}
sum(i,k)
{.....
}
here y,z are actual paramaters and i,k are formal parameters
//////////// we can not have storage classes identifier in arguments becoz in arguments..either we pass the value or we pass the pointer.....so pointer cannot be of storage classses.....and values also cannot be of storage class..//////storage classes are meaningful only if there used in concern of variables...