Which storage class is used primarily to indicate that a varia be shared by several files? s in one file but ld x be declared to 

b) Suppose that a variable x is to be shared by several functions in o hidden from functions in other files. Which storage class should x be declare have?

c) Which storage classes can affect the storage duration of a variable?

2. Given function foo() below int foo(int i static int j-0: return i j++;

a) What will be the value of foo (10) if foo has never been called before?

b) What will be the value of foo (10) if foo() has been called five times previously?