No linkage at block scope?

Question

Do all variables declared in a block have \'no linkage\'?

For example:

1:

If I declare a static variable:

void foo()
{
   static int i;         


        

Answer 1

1. "Would it have internal linkage or no linkage? if no linkage then why make it static?" -- it would have no linkage. static specifies the static storage duration.

2. "What happens if i use extern?" It will be a declaration of a name with external linkage, and since there is none in global scope, the program will report linkage errors. Edit: Since there is a previous static declaration visible in the scope, the standard says the name "receives the linkage of the previous declaration" 3.5/6, so the i inside foo() will have internal linkage.