Internal Linkage Twins

Implement a file-scope static counter pair that demonstrates internal linkage semantics: ``c int tally_a(int n); /* uses static accumulator a_count */ int tally_b(int n); /* uses static accumulator b_count */ ` Each function adds n to its own accumulator (both start at 0) and returns the new total. The two accumulators must be independent — that is the whole point of internal linkage. Also implement int peek_a(void)` returning a_count unchanged.

Difficulty: intermediate