foo.c:17:5: error: expected identifier or '(' before 'return'
   17 |     return cnt;
      |     ^~~~~~
foo.c:18:1: error: expected identifier or '(' before '}' token
   18 | }
      | ^
foo.c: In function 'PrimeCount':
foo.c:16:10: warning: control reaches end of non-void function [-Wreturn-type]
   16 |         }}
      |          ^

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